software troubleshooting

During a site survey, a technician finds that users in the break room experience very slow Wi-Fi while those in offices nearby have excellent speeds. What is the most likely cause?

A user wants to connect their smartphone to a car's stereo system that only has an auxiliary input (3.5mm jack). The smartphone has a USB-C port and no headphone jack. Which accessory is required?

A company is deploying VoIP phones and needs a connection with low latency and consistent speeds. They are choosing between cable broadband and fiber-optic. Which factor makes fiber the better choice?

A technician is troubleshooting a desktop that fails to boot and emits three long beeps from the motherboard speaker. The power supply fan spins, and the CPU fan spins, but there is no display output. What is the most likely cause of this issue?

A technician is building a workstation for video editing and needs to install two M.2 NVMe SSDs. The motherboard has one M.2 slot that supports both SATA and NVMe, and another that supports only SATA. When the technician installs both drives, only the NVMe drive is detected. What is the most likely reason?

A technician is troubleshooting a network where users on one floor cannot access a server on another floor. Both floors are connected via a single fiber optic link. The technician checks the link and sees the switch port shows 'err-disabled' status. What is the most likely cause of this state?

A marketing team uses tablets to capture customer signatures on glass screen protectors. They report that the capacitive stylus often skips or fails to register strokes near the edges of the screen. After testing, you find the issue persists even without the protector. Which accessory should you recommend to improve stylus precision?

A technician is troubleshooting a VoIP phone that intermittently drops calls. The phone uses SIP (Session Initiation Protocol) for signaling and RTP (Real-time Transport Protocol) for audio. Which ports are typically used by these protocols?

A technician is configuring a new workstation for video editing. The user needs fast read/write speeds for large project files. Which storage technology should be selected for the primary drive?

A customer brings in a smartphone with a broken charging port. They want the port replaced. During disassembly, the technician finds that the charging port is soldered directly to the main board. Which tool is essential for this repair?

A technician is configuring a kiosk that uses a tablet to display digital signage. The tablet must be powered continuously and connected to a wired network for reliability. The tablet has a single USB-C port. How should the technician provide both power and network connectivity?

A technician is building a new workstation for a graphic designer. The user needs fast single-threaded performance for Adobe Photoshop. Which CPU characteristic should the technician prioritize?

A user complains that their computer boots slowly and shows a 'Press F1 to continue' message every time. The firmware settings appear to have lost their configuration. What is the most likely cause?

A user reports that when they scan a document to email from the office multifunction printer, the email never arrives. The printer shows a 'Connection to SMTP server failed' error. What is the most likely cause?

A technician is troubleshooting a PC that emits a high-pitched whining noise under load. The noise is coming from the power supply area. The system is stable and temperatures are normal. What is the most likely cause?

A technician is troubleshooting a network where users report intermittent connectivity. The technician finds that the switch logs show excessive CRC errors on multiple ports connected to different workstations. What is the most likely cause of these errors?

A technician is configuring a network for a branch office that will use a router to connect to the main office over the internet. The connection must be encrypted and authenticated to ensure data privacy. Which protocol should the technician configure on the router?

After replacing a motherboard, a technician installs Windows but the system will not boot from the SSD. The drive is detected in UEFI. The technician recalls the previous motherboard used Legacy BIOS. What is the most likely issue?

A technician is troubleshooting a desktop that will not boot from a brand new M.2 NVMe SSD. The drive is detected in the BIOS/UEFI, but the system skips it and tries to boot from other devices. The technician has already verified that the drive is properly seated and the BIOS is up to date. What should the technician check next?

A user complains that their PC sometimes fails to boot and displays a 'CMOS Checksum Error' message. After replacing the CMOS battery, the error persists. What motherboard component should you inspect next?

During a network security audit, a technician finds that an employee is using a protocol that allows remote control of a computer with full graphical interface but without encryption. Which protocol should be replaced with a more secure alternative?

A technician is troubleshooting a workstation that randomly crashes and shows memory errors in Windows. The system has four 4 GB DDR4 modules. The technician runs Memtest86 and finds errors in one module. What should the technician do to resolve the issue while maximizing performance?

A user reports that their PC boots to a black screen with a blinking cursor after installing a new SATA SSD. The old hard drive is still connected. What is the most likely issue?

A user reports that their laser printer prints a 'PC LOAD LETTER' error message. The paper tray is full of A4 paper. What should the technician do to resolve the issue?

A technician is troubleshooting a PC that powers on for a few seconds then shuts off. The technician removes the 24-pin connector and jumps the green wire to a black wire; the PSU fan spins and stays on. What does this indicate?

A technician is setting up a new wireless network in a crowded office building. Users report that their laptops frequently disconnect from the Wi-Fi and have slow speeds, even when close to the access point. The technician scans the area and sees many overlapping Wi-Fi networks. What is the best solution to improve performance?

A user reports that their iPhone 12 will not turn on after being left in a hot car for several hours. The device feels warm, and pressing the power button does nothing. What is the most likely cause of the device not powering on?

A user reports that they cannot access a cloud-based CRM application from their office, but they can access it from home. The technician checks the office firewall and finds that outbound HTTPS traffic is allowed. What should the technician investigate next?

A technician is troubleshooting a tablet that can connect to Bluetooth headphones but cannot connect to a Bluetooth keyboard. The keyboard is known to work with other devices. What should the technician check first?

A company deploys tablets for field workers to capture signatures on glass screens using a capacitive stylus. Several workers complain that the stylus does not register consistently. What is the most likely cause?

A user complains that their laser printer is printing blank pages. The printer has toner, and the paper feeds correctly. Which component should the technician inspect first?

A technician is configuring a mobile hotspot on a smartphone to provide internet access to a laptop. The laptop connects to the hotspot's Wi-Fi network but cannot access the internet. The smartphone has a cellular data connection. Which of the following should the technician check first?

A user reports that their external monitor connected via HDMI shows a blurry image and the text is hard to read. They have tried a different HDMI cable and the issue persists. What is the most likely cause?

A technician is troubleshooting a DSL connection that keeps disconnecting. The modem shows the DSL light blinking. After checking the phone line, they find a filter is missing on a nearby phone handset. How does this cause the issue?

A technician is troubleshooting a user's computer that can reach internal servers by IP address but not by hostname. Other computers on the same subnet work correctly. Which tool should the technician use to check the computer's DNS resolution?

A small office has intermittent connectivity issues. The technician needs to verify that the Ethernet cable from the wall jack to the workstation meets T568A wiring standards. Which tool is most appropriate for this task?

A user complains that their smartphone frequently disconnects from the office Wi-Fi and then reconnects after a few seconds. The issue occurs only when the user walks to a specific part of the building. What is the most likely cause?

During a network upgrade, a technician installs a new wireless access point. Users on the new AP can access local resources but cannot browse the internet. The technician verifies that the AP has a valid IP address and can ping an external website by IP address. Which protocol is most likely misconfigured?

A technician is troubleshooting a monitor that displays a 'fuzzy' image with ghosting. The monitor is connected via VGA. The technician has already tried a different VGA cable and the issue persists. What should the technician check next?

A small office is moving to a new location and needs a dedicated, symmetrical internet connection with a guaranteed service level agreement (SLA). Which type of internet connection should be installed?

A customer reports that their multifunction printer (MFP) is not scanning to email. The MFP is connected to the network via Ethernet, and other network functions like printing work fine. What is the most likely cause of this issue?

A technician is configuring a workstation for a graphic designer who needs to work with large 4K video files. The motherboard supports SATA III and has one M.2 slot. Which storage configuration will provide the best performance for this workload?

You are setting up a new branch office and need to run Ethernet cables through ceiling plenums. You must ensure the cables meet fire safety codes. Which type of cable should you use, and which tool would you use to verify its integrity after installation?

A user complains that their laptop cannot connect to the company's wireless network, but other devices work fine. The network uses WPA2-Enterprise with 802.1X authentication. Which service is most likely misconfigured on the laptop?

A user complains that their Android tablet's touchscreen is unresponsive in a vertical strip down the middle of the screen, but the rest of the screen works fine. They have restarted the device and removed the screen protector. What is the most likely cause?

A city government wants to provide free public Wi-Fi in a downtown area spanning 2 square miles. The network must handle hundreds of simultaneous users and be accessible from streets and parks. Which network type is most appropriate for this deployment?

A customer reports that their external USB 3.0 hard drive is not recognized when plugged into a specific port on their desktop, but works on other ports. The drive is powered by the USB bus. What should be checked first?

A user tries to scan a document to a network folder from the multifunction printer, but receives 'Access Denied' error. The printer has been configured with the folder path and credentials. What is the most likely issue?

A technician is troubleshooting a laser printer that produces a '50.1 Fuser Error' message on the display. The printer is in a dusty warehouse environment. What should the technician do first?

A technician is troubleshooting a high-end workstation that randomly freezes during heavy 3D rendering. The motherboard has an X299 chipset with an LGA 2066 socket. The CPU temperature is normal, and the RAM passes MemTest86. Which motherboard component is most likely causing the instability?

A small office uses a cable internet connection with a DOCSIS 3.0 modem. Users complain that speeds drop significantly during peak evening hours. What is the most likely cause?

A user complains that when they scan a document to a network folder from the MFP, the scanned file is saved as a blank image. The MFP is configured to scan to a shared folder on a Windows server. What is the most likely cause?

A company deploys a network where each department has its own switch, and all switches connect to a central core switch. The network uses VLANs to separate traffic for finance, HR, and engineering. Which network type best describes the overall architecture, and what is a key characteristic?

A technician is building a new gaming PC and installs two 16 GB DDR5-5600 modules in the correct slots. The system boots and shows 32 GB in the BIOS, but the memory speed is reported as 4800 MHz instead of 5600 MHz. What is the most likely reason for this?

A user reports that their inkjet printer prints blank pages even though the ink cartridges are full and the printer shows no error messages. The technician has already checked the ink levels and performed a nozzle check, which showed no ink on the test pattern. What is the most likely cause?

A technician is troubleshooting a network where users can access the internet but cannot reach a specific internal web server by its hostname. The server's IP is 10.0.0.5, and pinging 10.0.0.5 works. The technician checks the DNS server and finds an A record for the server's name pointing to 10.0.0.10. What is the most likely issue?

A technician is setting up a new VoIP phone system. To ensure voice quality, they need to prioritize voice traffic over data traffic on the network. Which QoS configuration method should be implemented?

A user reports that their smartphone's charging port is loose and the cable falls out easily, making it difficult to charge. The technician inspects the port and sees no visible debris. What is the most likely cause and the appropriate repair?

A technician is setting up a conference room and needs to connect a laptop to a projector that only has a VGA input. The laptop has an HDMI output. Which adapter should the technician use?

A user reports that when they scan a document using the flatbed scanner on their multifunction printer, the resulting image has a blue tint. The same user says printing works fine. What is the most likely cause?

A user's laptop intermittently loses connection to the wireless network. The technician suspects channel congestion from nearby access points. Which tool should be used to identify the least congested Wi-Fi channel?

A technician is configuring a smartphone for a user who frequently travels internationally. The user wants to avoid high roaming charges but still use data when connected to local Wi-Fi. What should the technician do?

A technician is troubleshooting a network where two computers cannot communicate. Computer A has an IP of 192.168.1.10 with subnet mask 255.255.255.0. Computer B has an IP of 192.168.2.20 with subnet mask 255.255.255.0. Both are connected to the same switch. The switch is not configured with VLANs. Why can't the computers communicate?

A small office uses a single router with four LAN ports. The manager wants to connect 12 wired devices and ensure they can all communicate with each other without purchasing a new router. Which network device should be added to the existing setup?

You are troubleshooting a network issue where a user cannot access a specific server. You need to verify the path that packets take from the user's computer to the server and identify where delays occur. Which command-line tool should you use?

A technician is troubleshooting why a new employee cannot log into the company's VPN. The VPN uses RADIUS for authentication. Other employees can connect successfully. Which is the most likely cause?

A user wants to connect their laptop to a 4K TV for a movie marathon. They have a USB-C port on the laptop but the TV only has HDMI. Which accessory is required?

A user has a laptop that supports Thunderbolt 3 and wants to connect two external 4K monitors at full resolution. They currently have a single USB-C hub that only supports DisplayPort over USB-C. What is the most likely limitation?

A user reports that their laser printer is producing pages with vertical black streaks. The streaks appear in the same location on every page, even after cleaning the glass and performing a calibration. Which component is most likely causing this issue?

During a network cable installation, a technician needs to verify that a newly run Cat6 cable is properly terminated and free of shorts or opens. The cable is not yet connected to any switch or device. Which tool should the technician use?

A customer reports that their new Gigabit Ethernet connection is only achieving 100 Mbps speeds. The cable run is about 75 meters through a drop ceiling. You verify the switch and NIC are both Gigabit-capable. Which cable issue is most likely causing the speed limitation?

A user complains that their laptop, which has 8 GB of RAM soldered on the motherboard, is running slowly when multitasking. They ask if they can add more RAM. The laptop has one empty SO-DIMM slot. What is the best recommendation?

A technician is setting up a temporary network for a conference where attendees' laptops need to share files directly without any central access point or router. The conference room has no existing network infrastructure. Which network type should be configured, and what is a potential security risk?

A technician is troubleshooting a smartphone that cannot establish an NFC connection with a payment terminal. The phone's NFC is enabled, and the screen is unlocked. The payment terminal shows 'No card detected'. Which of the following should the technician check first?

A technician is troubleshooting a laser printer that produces a ghost image of the previous page on the current page. The ghost image appears slightly offset. What is the most likely cause?

A user complains that they cannot access any websites, but they can ping other devices on the local network by IP address. The network uses DHCP and DNS servers. Which protocol is most likely failing?

A customer reports that their external hard drive, which uses a USB-C connection, is not being recognized by their laptop. The drive works fine on another computer. The laptop has only USB-A ports. Which adapter should be used to connect the drive?

A user's 4K monitor is set to 3840x2160 resolution but text and icons appear very small and blurry. The display cable is a standard HDMI cable. What is the most likely cause of the blurriness?

A technician is replacing the toner cartridge in a laser printer. After installing the new cartridge, the printer displays an error message that the toner cartridge is not recognized. The technician has verified that the cartridge is compatible with the printer model. What is the most likely cause?

A technician is tasked with upgrading the RAM in an all-in-one (AIO) desktop. The AIO has a sealed back cover with several screws. After removing the screws, the cover still does not come off. What should the technician do next?

A technician is setting up a dual-monitor workstation for a financial analyst. The PC has one HDMI port and one DisplayPort. The monitors have HDMI and DVI inputs, respectively. Which cable combination will provide the most straightforward and reliable connection for both monitors?

A technician is setting up a new RAID 0 array with two 500 GB SSDs for a gaming PC. After installation, the system shows only 500 GB of usable space. What is the most likely cause?

A customer brings in an all-in-one PC that has a cracked LCD screen. The touch function still works, but the display shows a large black area with spiderweb cracks. The customer wants the cheapest fix. What should you recommend?

A user reports that their computer cannot connect to a network share. The technician runs ipconfig and sees an IP address of 169.254.1.5. What is the most likely cause?

A client wants to set up a network in a single large warehouse where employees use handheld scanners to track inventory. The scanners need to communicate with a central server located in the same building, but no internet access is required. Which network type should be configured?

A technician is setting up a new file server and needs to assign it a static IP address. The network uses a subnet of 192.168.1.0/24, and the router's LAN IP is 192.168.1.1. The technician wants to ensure the server is reachable from all devices on the local network. Which of the following IP addresses should the technician assign to the server?

A technician is troubleshooting a laser printer that produces pages with a faint ghost image of the previous page. The ghost image is slightly offset. Which component is most likely the cause?

A user reports that their smartphone can connect to Wi-Fi at home but not at the office. Other devices connect fine to the office Wi-Fi. What is the most likely cause?

A customer reports that their laptop frequently disconnects from the Wi-Fi in their home office, but works fine in other rooms. The office is located in a detached garage, and the wireless router is in the main house. Which wireless networking technology would best solve this issue without running cables?

A small office reports that internal users can access the internet but cannot resolve domain names to IP addresses. The DNS server is configured correctly. Which port should be checked on the firewall?

A technician is troubleshooting a Samsung Galaxy tablet that will not rotate the screen when the device is turned sideways. Auto-rotate is enabled in the settings, and the screen rotates correctly in safe mode. What is the most likely cause?

A technician is deploying a new thin client in a hospital room. The thin client has a DisplayPort output, but the existing monitor only has a DVI-D input. The technician needs a single cable to connect them without adapters. Which cable type should be used?

A small office has a single router with four LAN ports. The network uses 192.168.1.0/24. A new printer is assigned a static IP of 192.168.1.256. What will happen when the printer is connected?

A user reports that their laptop's Wi-Fi connection drops every 10 minutes, but reconnects immediately. The technician notices that the laptop is connected to a 5 GHz SSID. What is the most likely cause?

A server with a RAID 6 array of six 2 TB drives experiences a double drive failure. After replacing both drives, the technician starts the rebuild process, but the array status shows 'Degraded' and the rebuild fails. What is the most likely cause?

A user reports that their laser printer prints pages with a repeating horizontal band of missing text about every 3 inches. The printer has a new toner cartridge and the drum is separate. What is the most likely cause?

A customer reports that their new NVMe SSD is not detected by the system, even though it is properly seated. The motherboard supports both UEFI and legacy BIOS. Which firmware setting should be enabled to ensure the NVMe drive is recognized?

A user has a laptop that supports USB-C Power Delivery and wants to charge it using a portable power bank while on a flight. The power bank has a USB-A output. Which additional accessory is required?

During a hardware installation, you connect a new 4K monitor to a desktop PC using DisplayPort, but the display is stuck at 1080p resolution. The graphics card supports 4K. What is the most likely cause?

A technician is setting up a new Android tablet for a field sales representative. The tablet needs to connect to the internet via a cellular data plan. The technician inserts a nano-SIM card from the company's carrier, but the tablet shows 'No SIM card' in the status bar. The SIM card works in another tablet. What is the most likely cause?

A technician is configuring a conference room where a laptop must wirelessly display its screen to a 4K projector without using any cables. The projector supports Miracast. What must the technician verify on the laptop?

A technician is troubleshooting a PC that will not boot after a power surge. The motherboard has a built-in diagnostic LED that shows a red light near the DRAM slot. The user had recently upgraded the RAM. What is the most likely cause?

A company has offices in two different cities and needs to connect their local networks so employees can access centralized resources. They require a secure, high-speed connection over a long distance. Which network type should be used?

A small business has a single access point that supports both 2.4 GHz and 5 GHz. Employees report that their smartphones connect to the 2.4 GHz band, causing slow internet speeds. Which configuration change should the technician make to prioritize 5 GHz for capable devices?

A company deploys a new internal application that uses a custom TCP port. The application fails to connect from client workstations. A technician verifies that the server is running and the firewall allows outbound traffic. Which step should the technician take next to identify the port issue?

A small office is upgrading from 100Base-TX to 1000Base-T. The existing cabling is Cat5e, runs are under 50 meters, and terminations are T568B. After the upgrade, some workstations intermittently lose connectivity. What is the most likely issue?

A user reports that their iPhone 13 will not charge when plugged into the charging port. The user has tried different cables and power adapters, but the phone still does not charge. The phone's screen and buttons work normally. Which of the following is the most likely cause?

A user's PC is running very slowly, and the hard drive activity LED is constantly lit even when idle. Task Manager shows 100% disk usage. Which component is most likely failing?

A user wants to upgrade their laptop from a traditional HDD to an SSD for faster boot times. They have a SATA III interface available. Which type of SSD should you recommend for the best performance without requiring an adapter?

A small office has a single switch connecting all workstations. Users report that they can see each other on the network but cannot access the internet. The router's link light is off. What should the technician check first?

A network administrator is deploying a new wireless network that requires users to authenticate using their domain credentials. The network uses WPA2-Enterprise. Which service must be configured to validate these credentials?

A small business uses a thermal printer for shipping labels. Recently, the labels are printing with missing sections and uneven darkness. What is the most likely cause?

A user reports that after a recent iOS update, their banking app crashes every time they try to log in. Other apps work fine. The app was working before the update. What is the most likely cause and solution?

A user complains that their inkjet printer produces smudged output that rubs off when touched. The printer uses standard plain paper and the ink cartridges are original. What is the most likely cause?

A user reports that their computer suddenly cannot find the boot device, and the BIOS shows the SATA mode is set to 'IDE' instead of 'AHCI'. The drive was previously working. What is the most likely cause?

A user scans a document to a USB drive attached to the multifunction printer, but the file is saved as a TIFF image instead of a searchable PDF. The user needs the text to be selectable. What should the technician do?

A technician is deploying a fleet of tablets for field workers who need to print invoices on a Bluetooth printer. The tablets are Android-based and support Bluetooth 5.0. The printer is an older model supporting Bluetooth 2.1. Which of the following is true about the compatibility between these devices?

A technician is deploying a new network in a warehouse and needs to connect two separate switches that are 120 meters apart. The cable run must support 1 Gbps speeds. Which networking hardware component should be used to ensure reliable connectivity?

A technician is setting up a Windows 10 tablet for a field worker who needs to use a legacy line-of-business (LOB) app that only runs in 32-bit mode. The tablet has a 64-bit processor and Windows 10 Pro. How should the technician ensure the app runs correctly?

A small office has a single internet connection and needs to allow multiple internal devices to share that connection. The router's public IP is assigned by the ISP. Which network service must be enabled on the router to allow internal devices to communicate with external servers?

A customer complains that their wireless network is slow and frequently drops connections. They live in a densely populated apartment building. The technician checks the wireless router and sees it is using channel 1. What is the most likely cause of the issue?

A customer reports that their smart TV, which is connected to the home network via Wi-Fi, can stream video from the internet but cannot access media files stored on a wired desktop PC in the same home. The TV and PC are on the same IP subnet. Which network type is most likely being used, and why does this cause the issue?

During a printer deployment, a technician installs a network laser printer and configures it with a static IP address. Users can print from their computers, but the printer's web interface is unreachable from any browser. What is the most likely cause?

A user's laser printer is displaying a 'Replace Fuser' error message, but the pages are printing correctly. The printer has a maintenance kit that includes a fuser, transfer roller, and pickup rollers. What should be done?

A user complains that their computer sometimes fails to boot and emits a series of long beeps. After several attempts, it boots normally. Which motherboard component is most likely failing?

A user reports that their computer intermittently freezes for a few seconds during normal use. The technician checks Event Viewer and finds 'WHEA-Logger' errors related to the CPU. What is the most likely cause?

A technician is troubleshooting a PC that boots to a black screen with a blinking cursor after the BIOS screen. The system has a single SSD with the OS installed. The BIOS detects the SSD. What is the most likely cause?

A technician is upgrading the RAM in a laptop. After installing two new 8GB sticks, the laptop fails to boot and emits a series of beeps. What is the most likely cause?

During a routine hardware upgrade, you install a new PCIe x16 graphics card into a desktop motherboard. The system powers on, but the display remains blank. The graphics card's fans are spinning. What should you check first on the motherboard?

A technician is installing a new touchscreen monitor for a point-of-sale system. The monitor connects via HDMI and USB. The display works, but touch input is not recognized. What should the technician check first?

A user wants to wirelessly stream music from their smartphone to a Bluetooth speaker in the same room. Which network type is being used for this connection?

A user reports that their laser printer jams frequently, but only when printing on both sides (duplex). Single-sided printing works fine. The technician has inspected the paper and it is within specifications. What is the most likely cause of this issue?

A cloud architect is designing a solution where a company's web application automatically scales out to handle increased traffic and scales in during low demand. The application runs on multiple virtual machines. Which cloud characteristic is being utilized?

A user's laser printer is producing pages with a repeating horizontal line defect every 3.75 inches. Which component is most likely causing this issue?

A user says their inkjet printer prints colors that are slightly misaligned, with text appearing blurry. The printer has been used heavily for months. Which component should be checked or calibrated first?

A desktop PC fails to power on. The technician measures the voltage on the 24-pin motherboard connector and finds that the purple wire (5VSB) reads 4.9V, but the green wire (PS_ON) reads 0V when the power button is pressed. What does this indicate?

An office manager wants to restrict color printing on the multifunction printer to only certain users to save costs. The printer supports user authentication. What is the best way to implement this?

A user's Android phone will not charge when plugged into a car's USB port, but charges fine with a wall adapter. The car's USB port powers other devices. What is the most likely issue?

A user reports that their smartphone's mobile hotspot stops working after a few minutes of use. The laptop connected to it loses internet access. What is the most likely cause?

A company deploys a load balancer to distribute traffic across three web servers. Users report that they occasionally see outdated content or are asked to log in repeatedly. Which network service configuration is most likely missing to maintain session persistence?

A user's smartphone can connect to a corporate Wi-Fi network but cannot access any internet sites. Other devices on the same network work fine. The smartphone shows it is connected with full signal. What is the most likely cause?

A company deploys a new 802.11ac access point in a warehouse. After installation, workers report that their handheld scanners frequently disconnect when moving between aisles. The AP is mounted on a high ceiling. Which configuration change would most likely improve connectivity?

During a network upgrade, a technician installs a new 802.11ax (Wi-Fi 6) access point in a conference room. Users now report intermittent disconnections on their older laptops. What is the most likely cause?

A customer reports that their laser printer is producing pages with faint, streaky text and occasional blank spots. The toner cartridge is new, and the printer's maintenance kit was replaced last month. Which component should be inspected next?

You are deploying a new VoIP phone and need to ensure the Ethernet cable from the wall jack to the phone is properly terminated and has no shorts. The cable appears to be wired correctly but you want to confirm. Which tool should you use?

A customer reports that their smartphone can connect to Wi-Fi at home but fails to connect to the company's 5 GHz Wi-Fi network in the office. Other devices connect fine. What is the most likely cause?

During a site survey for a new branch office, you measure signal strength in the conference room and find it is -85 dBm. The client devices require at least -67 dBm for reliable video conferencing. Which action is most appropriate?

A technician is troubleshooting a VM that cannot connect to the internet. The host has a single NIC and uses a Type 2 hypervisor. The VM's virtual switch is set to 'NAT'. Other VMs on the same host can access the internet. What is the most likely reason for the connectivity issue?

A user complains that their laptop frequently disconnects from the Wi-Fi when they move to a different room, but other devices in that room work fine. The technician checks the laptop's wireless adapter settings. Which configuration is most likely causing the issue?

A company is upgrading its network to support 10 Gbps speeds for a server farm. The existing cabling is Cat6a, and the switches are Gigabit. The IT manager wants to minimize cost while achieving 10 Gbps. Which hardware change is required?

A user configures their laptop to use a static IP address, subnet mask, and default gateway. They can ping other devices on the same subnet but cannot reach the internet. What network service is most likely missing from their configuration?

A technician is tasked with enabling virtualization on a desktop to run a hypervisor. After enabling the feature in the OS, the hypervisor still reports that virtualization is disabled. What should be checked in the firmware?

A user reports that their smartphone's screen is flickering and has vertical lines. The phone has not been dropped or exposed to water. Which of the following is the most likely cause of this issue?

A small office with 15 employees uses a single switch to connect all workstations. Users report that the network becomes extremely slow during peak hours, and some packets are being dropped. The switch is a 10/100 model with a 1 Gbps uplink to the router. What is the most likely cause of the slowdown?

A network engineer is designing a subnet scheme for a company with three departments: Sales (50 devices), HR (20 devices), and IT (10 devices). The company uses the 10.0.0.0/24 network. To minimize waste, the engineer decides to use variable-length subnet masking (VLSM). Which of the following subnet masks should be assigned to the Sales department?

A company is setting up a new branch office with 30 employees. They need to connect all workstations to the network and provide internet access. The internet connection is a fiber optic line terminating in an ONT. Which device should be placed between the ONT and the switch to route traffic and provide NAT?

A user reports that their new Bluetooth headset pairs with their smartphone but no audio is heard during calls. The headset works fine with another phone. What is the most likely cause?

During a site survey, a technician needs to measure the signal strength of a wireless access point from various locations in an office to ensure adequate coverage. Which tool should be used for this task?

A user wants to use a wired headset with their tablet for voice calls, but the tablet only has a single USB-C port and no 3.5mm jack. The headset has a 3.5mm plug. Which accessory should you recommend?

A user wants to access their company's webmail using a secure connection from a public Wi-Fi hotspot. The webmail server is configured to use IMAP over SSL. Which port should the email client use?

A user reports intermittent network connectivity in an office that recently had a new ceiling installed. The network drop runs through the ceiling and is not in a conduit. What is the most likely cause of the intermittent connection?

A technician is troubleshooting a laptop that powers on but displays a black screen with no boot activity. The technician hears the fan spinning and sees the power LED is on. Which of the following steps should the technician perform next to isolate the issue?

A user reports that their laser printer is producing pages with vertical black streaks. The streaks appear consistently in the same location on every page. Which printer component is most likely causing this issue?

A technician is troubleshooting a VM that frequently crashes with a 'blue screen' error. The host is a Type 1 hypervisor running on server-grade hardware with ECC RAM. The VM was created from a template and has been stable for months. Recently, the technician added a second virtual CPU to the VM. What is the most likely cause of the crashes?

A technician is configuring an MFP for a healthcare clinic that must comply with HIPAA. The MFP has a built-in hard drive that stores scanned documents. The clinic wants to ensure that once a document is scanned and transmitted, it cannot be recovered from the MFP's drive. What feature should the technician enable?

A user reports that their computer's hard drive makes a clicking noise and the system occasionally freezes. Which action should you take first?

A technician is troubleshooting a workstation that fails to boot. The motherboard has a POST code display showing '00'. The CPU fan spins, but there is no display output. Which component is most likely faulty?

A technician is selecting a power supply for a workstation that will run 24/7 in a dusty environment. The PSU will be installed in a case with limited airflow. Which PSU feature is most important to prioritize for long-term reliability in this scenario?

A technician is troubleshooting a display that shows a single vertical line of dead pixels from top to bottom. The monitor is under warranty. Which of the following is the most appropriate resolution?

A technician is setting up internet for a remote cabin that is 5 miles from the nearest road. No wired infrastructure exists. Which connection type is most practical for reliable, moderate-speed internet?

A small business owner wants to set up a guest Wi-Fi network that is isolated from the main corporate network to prevent unauthorized access to sensitive data. The wireless router supports multiple SSIDs. Which configuration should be applied to achieve this isolation?

A technician is troubleshooting a PC that powers on but does not display anything on the monitor. The fans spin, and the keyboard lights flash briefly. The power supply fan is spinning. What is the most efficient next step to isolate the issue?

A small office has an inkjet printer that is printing blank pages even though the ink cartridges are full and properly installed. What is the most likely cause of this problem?

A technician is installing a new network drop in a warehouse where there is high electromagnetic interference (EMI) from machinery. Which cable type should be used to minimize signal degradation?

A client wants to install a new power supply in a custom PC that uses a mini-ITX motherboard inside a compact case. The current PSU is a standard ATX unit, but the client wants to reduce clutter and improve airflow. Which form factor should you recommend?

A small office uses an inkjet printer that has not been used for two weeks. Now, the prints show missing colors and horizontal white lines. What should be done first to resolve this?

A user complains that their computer is running slowly, especially when opening multiple browser tabs. Task Manager shows the CPU is at 100% usage constantly, even when idle. Which of the following is the most likely cause?

A small office uses a network printer that supports both IPP and LPD printing. The printer is configured to use the default port for IPP. Which port must be open on the firewall for printing to work?

A user reports that their desktop computer cannot connect to the internet, but other devices on the same network work fine. You check the patch cable from the wall jack to the PC and find it is a Cat5e cable. The PC's network adapter shows a link light, but no activity. What should you do first?

A customer complains that their computer takes a long time to switch between open applications and frequently shows the 'low memory' warning. The system has 8 GB of DDR3 RAM. Task Manager shows that 7.5 GB is in use when only a few applications are open. What is the most likely cause?

A small office has a single router with four LAN ports. The network uses the 192.168.1.0/24 subnet, and the router's LAN IP is 192.168.1.1. A technician needs to add a new printer that must have a static IP address outside the DHCP range (192.168.1.100-192.168.1.200) but still be reachable by all devices. Which IP address should the technician assign to the printer?

A customer is moving into a new apartment building that has a fiber optic terminal in the basement. They want the fastest possible internet. What equipment will the technician need to install inside the apartment to complete the connection?

A user in a law office reports that their laser printer prints documents with faint text and light images. The toner cartridge is new, and the printer has sufficient toner. Which component should you inspect or replace first?

A company is migrating its on-premises database to a cloud PaaS solution. The database currently contains sensitive customer information. Which of the following is the most important security consideration for the migration?

A user reports that their tablet's screen is completely black but the device vibrates when powered on. You have already tried a forced restart and checked for physical damage. What is the most likely hardware cause?

A user reports that their USB 3.0 external SSD is only achieving USB 2.0 speeds when connected to a front panel port. The technician checks the motherboard and finds the front panel header is connected to a USB 3.0 header. Which of the following is the most likely cause of the slow speed?

A user connects a 4K monitor to their laptop using a USB-C port. The monitor is detected, but the resolution is stuck at 1920x1080. The laptop supports 4K output via USB-C. What is the most likely reason?

A user reports that their laptop's external monitor connected via USB-C to HDMI adapter flickers intermittently. The adapter works fine with other devices. What is the most likely cause?

A technician is building a high-performance workstation for video editing. The user needs fast read/write speeds for large 4K video files and wants the OS and applications on the same drive. The motherboard has one M.2 slot (PCIe 4.0 x4) and four SATA III ports. Which storage configuration should the technician recommend?

A user reports that their laptop's Bluetooth mouse stops working after the laptop wakes from sleep. The mouse works fine after a reboot. The technician suspects a driver issue. Which of the following steps should the technician take to resolve this without disrupting other Bluetooth devices?

A user complains that their laptop's Wi-Fi connection is extremely slow and keeps dropping, but other devices on the same network work fine. The laptop is an older model running Windows 10. Which of the following should the technician try first?

A small business owner wants to use a smartphone as a point-of-sale (POS) terminal for credit card payments. They ask which accessory is essential for this setup. What should you recommend?

After installing a second hard drive in a desktop PC, the system boots but the new drive does not appear in File Explorer. The drive is listed in Disk Management as 'Unknown' and 'Not Initialized'. What should the technician do first?

A user complains that their PC is running slowly and the fan is constantly running at high speed. Task Manager shows the CPU is consistently at 100% usage even when idle. Which of the following is the most likely cause?

A user reports that their PC randomly restarts during boot-up, sometimes before the Windows logo appears. They have already tried reseating the RAM. Which component should be tested next?

A technician is tasked with selecting a CPU for a small form factor (SFF) office PC that must run quietly and efficiently. Which CPU characteristic is most important for this build?

A company deploys several tablets for field technicians that need to connect to a private LTE network via a SIM card. One tablet connects to the network but has very slow data speeds. Other tablets in the same area work fine. What is the most likely cause?

A user reports that their iPad's Safari browser crashes immediately upon opening, but other apps work fine. They have already restarted the device. What should the technician do next?

A customer complains that their computer takes a very long time to boot and sometimes shows a 'CMOS Checksum Error' before starting. What is the most likely hardware issue?

A technician is troubleshooting a VoIP phone that cannot register with the SIP server. The phone has a valid IP address and can ping the server. Which port should be verified as open for SIP traffic?

A technician is tasked with upgrading the RAM in a laptop that uses SO-DIMM modules. The laptop currently has 4 GB of RAM soldered on the motherboard and one empty SO-DIMM slot. The technician installs an 8 GB SO-DIMM, but the system only reports 8 GB total. What is the most likely reason?

After replacing a motherboard, a technician finds that the PC will not power on at all. The power supply fan does not spin, and no LEDs light up. The PSU was working before the replacement. What is the most likely cause?

A customer reports that their wireless printer stops responding when the microwave is in use. The printer is connected via Wi-Fi to a dual-band router. Which troubleshooting step should the technician take first to resolve this issue?

A network administrator notices that a managed switch is not reporting its status to the central monitoring system. The monitoring system uses a protocol that collects device information such as CPU load and interface errors. Which protocol is most likely not configured on the switch?

A company uses a cloud-based virtual desktop infrastructure (VDI) solution. Users report that logging in takes 5 minutes during peak hours. The IT team notices that the cloud provider's resource utilization is at 95%. Which action would best resolve this issue?

A customer wants to use a portable projector with their smartphone for impromptu presentations. The smartphone has a USB-C port that supports DisplayPort Alt Mode. Which accessory will enable this connection?

A technician is setting up a new wireless network for a small office. The office has three access points (APs) that should allow seamless roaming. The technician configures all APs with the same SSID and security settings. What additional configuration is necessary to prevent clients from staying connected to a weak signal?

A small office has intermittent network dropouts. A technician suspects electromagnetic interference (EMI) from nearby fluorescent lights affecting the unshielded twisted-pair (UTP) cables. Which tool can best confirm the presence of EMI on the cable?

A technician is troubleshooting a network where users on one floor cannot communicate with users on another floor. Both floors are connected to the same switch via separate VLANs configured for security. What additional device is needed to allow communication between the VLANs?

A technician is installing new cabling for a security camera system that uses PoE. The cameras are located 120 meters from the switch. The technician has Cat6 cable available. What should the technician do to ensure reliable operation?

A technician is upgrading a workstation from DDR3 to DDR4 memory. The motherboard currently has two DDR3 DIMM slots occupied. What must the technician verify before installing the new memory?

A user reports that their cloud-based file synchronization service stopped updating files after a recent OS update. The technician verifies the service is running and the internet connection is active. What should the technician check next?

During a security audit, a technician discovers that an internal web server is responding on port 8080 instead of the standard HTTP port. What is the most likely reason for this configuration?

A user complains that their laptop's touchpad cursor jumps erratically while typing. They have cleaned the touchpad surface, but the issue persists. Which configuration change should you try first?

A technician is troubleshooting a network drop that was working yesterday but now has no link light. The cable run is 90 meters and uses Cat5e. The patch cables and switch ports have been tested and are fine. What is the most likely issue?

A customer reports their desktop PC is running extremely slow, especially when multiple applications are open. They mention they recently upgraded from Windows 10 to Windows 11. The system has 4 GB of RAM. What should you recommend as the most effective first step to improve performance?

A customer reports that they cannot send emails from their desktop email client, but they can receive emails. The email server is running on the local network. Which port is most likely blocked on the firewall?

A company uses a public cloud provider for compute resources. To reduce costs, they want to use unused capacity at a lower price but accept that the instance may be terminated with short notice. Which pricing model should they choose?

A technician is troubleshooting a PC that randomly restarts under load. The CPU temperature is normal, but the system sometimes fails to POST with a 'CPU Overvoltage Error'. The motherboard is a few years old. What is the most likely cause?

A user reports that their laser printer is producing pages with a faint, ghost-like image of the previous page printed on the back of the current page. The printer has been in use for three years and has never had its maintenance kit replaced. What is the most likely cause of this issue?

A user reports that their PC's USB 3.0 ports are only operating at USB 2.0 speeds. The device works fine on another computer. The motherboard has both USB 3.0 and USB 2.0 headers. What is the most likely cause?

A company wants to allow employees to securely access the corporate network from home using their laptops. Which network service should be deployed to provide encrypted remote access?

A technician is configuring a new web server that must support both standard HTTP and HTTPS traffic. Which two ports should be opened in the firewall?

A user reports that their LCD monitor intermittently goes black for 2-3 seconds, then returns to normal. This happens randomly, not during any specific activity. The monitor's power LED stays green during the blackouts. Which component is most likely failing?

A technician is installing a power supply in a new build. The case has a bottom-mounted PSU bay with a dust filter. The technician notices that the PSU fan faces downward. Is this correct?

A customer brings in a PC that was working fine until they moved it to a new desk. Now it powers on but immediately shuts off after 2 seconds. The technician notes that the CPU fan does not spin at all. What is the most likely cause?

A user reports that their smartphone's mobile hotspot works for a few minutes, then the connected laptop loses internet access, but the smartphone still shows a cellular data connection. The hotspot remains enabled. What is the most likely cause?

A technician is setting up a new web server that must be accessible from the internet using HTTPS. The server is behind a firewall that performs port forwarding. After configuration, external users cannot reach the server, but internal users can. Which protocol and port combination must be forwarded to the server?

A small office uses a wireless printer that supports Wi-Fi Direct. Several employees want to print from their smartphones without connecting to the company's wireless network. What is the simplest way to achieve this?

A technician is replacing a power supply in an office desktop. The new PSU has a 24-pin main connector, but the motherboard has a 20-pin socket. What should the technician do?

A user wants to boot their laptop from a USB flash drive to run a diagnostic tool. They have already inserted the USB drive and restarted the system. What is the most efficient way to temporarily change the boot order to boot from the USB drive?

A customer brings in a laptop that will not charge. The technician checks the AC adapter with a multimeter and gets 19V output. When the adapter is plugged into the laptop, the charging LED does not illuminate. What should the technician check next?

A customer reports that their desktop computer randomly shuts down after a few minutes of gaming, but it runs fine during light tasks. You suspect the power supply is failing. Which tool should you use to confirm the power supply's output voltages are within ATX specification?

A user’s laptop connects to the corporate Wi-Fi but cannot access the internet. Other devices on the same SSID work fine. The technician checks the laptop’s IP configuration and sees an IPv4 address of 169.254.12.34. What is the most likely cause of this issue?

A company is migrating a critical application from a physical server to a virtual machine. The application requires a static MAC address tied to its license. The technician performs a P2V migration and starts the VM, but the application fails to activate. The technician verifies that the VM has the same MAC address as the original physical server. What is the most likely cause of the activation failure?

A user reports that they can access internal resources using IP addresses but cannot access them using hostnames. Other users on the same network have no issues. What is the most likely cause?

A network administrator needs to allow secure remote administration of a router using SSH. The router is configured to use the default SSH port. Which port must be opened on the firewall?

A customer wants to connect two switches in different buildings about 150 meters apart. The link must support at least 1 Gbps. Which cabling solution is most appropriate?

A user complains that their laptop frequently disconnects from the Wi-Fi when they move from their desk to a conference room 30 meters away. The office uses a single wireless access point (AP). Which network type is being used, and what is the most likely cause of the disconnection?

A user needs to transfer files securely between two Linux servers over the internet. Which port should be allowed through the firewall for this purpose?

A technician is configuring a dual-monitor setup for a stock trader. One monitor is a 24-inch 1080p display, and the other is a 27-inch 4K display. The user wants the mouse to move seamlessly between them. What setting must the technician configure in the OS display settings?

A customer reports that their new Gigabit Ethernet connection is only achieving 100 Mbps speeds. The cable run is 75 meters through a drop ceiling and uses a Cat5e cable. What is the most likely cause of the speed limitation?

A technician is troubleshooting a user's laptop that cannot obtain an IP address via DHCP. The laptop shows an Automatic Private IP Addressing (APIPA) address of 169.254.x.x. Other devices on the same network obtain IPs correctly. Which protocol should the technician verify is functioning on the laptop?

A customer reports that their new Gigabit Ethernet connection is only achieving 100 Mbps speeds. The cable run is about 75 meters through a drop ceiling. The technician checks the patch panel and wall jack terminations, which appear correct. What is the most likely cause of the speed issue?

A technician is troubleshooting a PC that randomly freezes during boot. The technician notices that the motherboard has a 24-pin ATX power connector and an 8-pin EPS12V connector. The power supply only has a 4+4 pin CPU power cable. What should the technician do?

A user reports intermittent network drops. You suspect the issue might be with the network interface card (NIC) itself. You need to test the NIC's ability to send and receive data without connecting it to the network. Which tool should you use?

During a network upgrade, a technician needs to ensure that all devices on a small office LAN receive IP addresses automatically from a central server. Which protocol must be running on that server?

A technician is configuring a RAID 10 array for a database server using four 500 GB SSDs. After setup, the array shows a total capacity of 1 TB instead of 2 TB. What is the most likely reason for this discrepancy?

A company's web server is accessible from the internet, but users report that the website loads slowly. The server's public IP is 203.0.113.10, and the internal IP is 192.168.1.10. The network administrator notices that the router's port forwarding rule is set to forward port 80 to 192.168.1.10:8080. What is the likely cause of the slow performance?

A user reports that their iPad will not rotate the screen when the device is turned sideways, even though rotation lock is off. The issue started after a recent iOS update. What is the most likely cause?

A user complains that they cannot access a website by its domain name, but they can access it by typing the IP address directly. The user's computer is configured to obtain DNS automatically. What is the most likely issue?

A technician is troubleshooting a laptop that has a blinking battery light and will not power on, even when plugged into AC power. The technician has already verified the AC adapter is working on another laptop. Which component is most likely faulty?

A user complains that their cloud-hosted virtual desktop is slow to open applications and frequently disconnects. They are using a satellite internet connection. Which cloud characteristic is most likely being impacted?

A technician is setting up a wireless network for a small office that experiences heavy interference from neighboring businesses. The office uses many Bluetooth devices and cordless phones. Which 802.11 standard and frequency combination would minimize interference and provide the best performance?

A user reports that their laser printer prints a blank page after every print job. The document itself prints correctly, but an extra blank sheet follows. What is the most likely cause?

A customer complains that their computer will not turn on. The power supply fan does not spin, and the motherboard LED is off. The technician tests the power supply with a multimeter and gets 0V on all pins. What should the technician do next?

A user's iPhone 14 cannot make or receive calls, but can send iMessages and use the internet. The user has not changed any settings recently. What is the most likely cause?

A user reports that they can only access the internet intermittently. The technician runs ipconfig and sees an IPv4 address of 192.168.1.105 with a subnet mask of 255.255.255.0 and a default gateway of 192.168.1.1. The technician pings the gateway successfully, but pings to 8.8.8.8 fail. What is the most likely issue?

A technician is deploying a new virtual machine on a Type 2 hypervisor (hosted) for software testing. The host machine runs Windows 10 Pro with 16 GB RAM and a quad-core CPU. The test application requires 4 GB RAM and two virtual CPUs. After creating the VM with those settings, the technician notices the host becomes extremely sluggish even when the VM is idle. What is the most likely reason for this?

A technician is troubleshooting a wireless network where users report intermittent connectivity and slow speeds. A spectrum analyzer shows high noise levels on the 2.4 GHz band from non-Wi-Fi sources. Which of the following is the MOST effective long-term solution?

A company uses a PaaS provider to deploy a custom web application. After an update, the application fails to start. The developer checks the code and finds no errors. What is the most likely cause of the failure?

A user reports that their external monitor connected via USB-C (DisplayPort Alt Mode) works intermittently. When it does work, the resolution is limited to 1920x1080 even though the monitor supports 4K. The laptop supports USB-C with DisplayPort Alt Mode. What is the most likely cause?

A technician is installing a new M.2 NVMe SSD in a desktop computer. After installation, the drive is not listed in the operating system's disk management tool, but it appears in the UEFI firmware interface. What should the technician do first?

A user reports that their computer emits a loud, high-pitched whine when under load, but is silent at idle. The system is stable. What is the most likely cause?

A technician is configuring a new Android tablet for a warehouse employee. The employee will use the tablet to scan barcodes and access a web-based inventory system. The tablet needs to stay connected to the Wi-Fi network even when the screen is off to receive updates. Which setting should the technician configure?

A user's laptop frequently disconnects from a 5 GHz Wi-Fi network when they move to a room two walls away from the access point. The 2.4 GHz network remains stable throughout the office. Which of the following best explains this behavior?

A technician is troubleshooting a network issue where a user's computer can access local resources but cannot reach the internet. The user's cable is connected to a wall jack that leads to a patch panel in the server room. The technician tests the cable and finds it is wired as a crossover cable. What is the most likely impact?

A network printer in a school is shared by multiple users. They report that print jobs are frequently stuck in the queue and never print, but the printer itself is powered on and shows no errors. What is the most likely cause?

A client in a dense urban apartment building wants internet service but cannot install a satellite dish due to HOA rules. They have a phone line but no cable TV outlet. Which connection type is most practical and cost-effective?

A user reports that they cannot access any websites, but they can ping the IP address of a public DNS server (8.8.8.8). What is the most likely misconfigured network service?

A customer complains that their VoIP phone intermittently drops calls and has poor audio quality. The phone is connected to a switch port that also carries data traffic for a nearby workstation. What is the most likely cause?

A user complains that their computer shuts down unexpectedly after a few minutes of gaming. You check the CPU temperature and find it is 105°C. What is the most likely cause?

A user receives an error when trying to access a cloud application: 'This application is not available in your region.' The user is traveling abroad. Which cloud concept is most likely causing this restriction?

During a repair, you accidentally dislodged a small ribbon cable connecting the volume button flex to the mainboard of a smartphone. Now the volume buttons don't work. What is the most likely result of this mistake?

A technician is troubleshooting a user's computer that cannot access a web server at 10.10.10.50. The user's IP is 10.10.20.15 with subnet mask 255.255.0.0. The technician can ping 10.10.10.50 from the user's computer. What should the technician check next?

A technician is configuring a small branch office network with 30 devices. The network uses a single router with DHCP enabled. To conserve IP addresses, the technician decides to use a subnet that provides exactly enough usable addresses for the devices, with minimal waste. Which subnet mask should the technician choose?

A large corporation needs to connect its headquarters in New York to a regional office in Los Angeles, as well as to a data center in Chicago, using dedicated leased lines. The network must support high bandwidth for video conferencing and data transfers. Which network topology best describes this setup?

A technician is setting up a new 32-inch 4K monitor for a graphic designer. After connecting it via HDMI, the display shows a 'Signal Out of Range' error. The PC has an integrated Intel GPU. What is the most likely cause?

A user reports that their PC sometimes fails to boot, and when it does, they see a message saying 'Memory Management Error.' They have two 4 GB sticks of DDR3 RAM installed. A technician runs Windows Memory Diagnostic and finds errors on one stick. What should the technician do next?

A user is trying to connect their smartphone to a car's infotainment system using Bluetooth for hands-free calling. The phone pairs successfully, but audio only plays through the phone's speaker, not the car's speakers. Which of the following is the most likely reason for this issue?

A user reports that they cannot access the internet, but they can ping other devices on the local network. The technician checks the IP configuration and sees: IP: 192.168.1.25, Subnet Mask: 255.255.255.0, Default Gateway: 192.168.2.1. What is the issue?

A user's Android phone is running slowly and frequently shows 'App not responding' messages. The user has not installed any new apps recently. What should a technician do first?

A technician is troubleshooting a projector that displays a faint, ghost-like image even when no input source is connected. The projector has been in use for several years. What is the most likely cause?

A technician is replacing the display assembly on a laptop. After installing the new display, the laptop powers on but the screen remains black. The technician has verified the display cable is fully seated at both ends. What should the technician check next to diagnose the issue?

A technician is asked to run a new network cable from a patch panel to a cubicle 80 meters away. The cable must support at least 1 Gbps. The technician has Cat6 cable on hand. What is the maximum distance this cable will support for 1 Gbps?

A company deploys a new file server that uses SMB protocol for file sharing. Users on Windows 10 can connect to the server, but users on older Windows 7 machines cannot. The server is configured to require SMB 3.0 encryption. Which protocol version mismatch is causing the issue?

A technician is deploying a new SSD in a desktop PC. After installing the drive and connecting the SATA data and power cables, the system does not recognize the drive in the BIOS. All other drives are detected. What should the technician check first?

A multinational corporation has offices in New York, London, and Tokyo. They need a private, dedicated network to connect all offices with high reliability and low latency. Which network type should be implemented?

A technician is troubleshooting a PC that fails to POST. The CPU fan spins, but there is no display output. The motherboard has a diagnostic LED that shows a CPU error. Which step should the technician take first to resolve the issue?

A customer wants to connect a Bluetooth keyboard and mouse to their tablet for a presentation. They ask which accessory is needed to ensure both devices work reliably from across the room. What should you recommend?

A user reports that their iPhone's Maps app shows incorrect GPS location, often placing them several blocks away. Other location-based apps like Uber work correctly. What is the most likely cause?

A technician is setting up a new office with 20 workstations. The cabling is Cat6, and all runs are under 90 meters. After terminating the cables at the patch panel and wall jacks, the technician tests each run with a cable certifier. One run fails the test for near-end crosstalk (NEXT). What is the most likely cause?

A user's SATA SSD is not detected by the BIOS after a power surge. The motherboard has four SATA ports, and the SSD was previously working on port 0. What is the most likely cause?

A technician is setting up a mobile point-of-sale system for a small retail store. The tablet needs to be mounted on the counter and remain powered throughout the day. Which two accessories are essential for this deployment?

A customer reports that their internet connection drops frequently during rainstorms. They have a cable modem and a wireless router. What is the most likely cause of the intermittent connection?

A technician is configuring a new SOHO router for a client who has a DSL internet connection. What type of cable will the technician use to connect the router to the wall jack?

A user’s laptop is connected to a Wi-Fi network with a strong signal, but the user cannot access any network resources. The IP configuration shows an address of 192.168.1.50 with a subnet mask of 255.255.255.0 and a default gateway of 192.168.1.1. The technician pings the gateway successfully. What should the technician check next?

A technician is configuring a network for a municipal government that needs to connect public Wi-Fi hotspots across a city, covering an area of about 50 square kilometers. The network must be secure and provide internet access to citizens. Which network type should be deployed?

A company uses VMware vSphere to run multiple VMs on a single ESXi host. A user reports that their VM suddenly lost network connectivity, but other VMs on the same host are working fine. The technician checks the virtual switch configuration and finds that the VM’s virtual NIC is connected to a port group that has no active uplinks. What should the technician do to restore connectivity?

A technician is troubleshooting a desktop PC that will not boot. The motherboard has a 24-pin ATX power connector and a 4-pin CPU power connector. The power supply has a 20+4 pin main connector and an 8-pin CPU connector. What is the correct way to connect the power supply?

A technician is troubleshooting a PC that fails to boot and emits a series of long beeps. The motherboard documentation indicates this is a memory error. Which component on the motherboard is responsible for generating these beep codes?

A technician is configuring a new wireless router for a home office. The customer wants to ensure that guests can access the internet but cannot see other devices on the main network. Which feature should the technician enable on the router?

A technician is setting up a new network printer in a conference room. The printer has an RJ45 port for wired networking, but the only available wall jack is labeled with a different room number. The technician needs to connect the printer to the network. What is the best approach?

A small office uses a single public IP address for internet access. The network administrator wants internal web servers to be reachable from the internet on port 80. Which network service should be configured on the router to allow this?

A technician is configuring a virtual machine to host a database server that requires consistent high disk I/O performance. The host uses a RAID 10 array of SSDs. Which virtual disk type should the technician select to minimize overhead and maximize performance?

During a conference call, a user complains that their wireless earbuds keep disconnecting from their smartphone every few minutes. The earbuds work fine when paired with a different phone. What is the most likely cause?

A user complains that their computer with a 256 GB NVMe SSD is running out of storage space. They want to add more internal storage but only have one M.2 slot. What is the best solution to expand capacity without sacrificing performance?

A technician is troubleshooting a network where users can access the internet but cannot reach a specific internal web server by its hostname. Pinging the server's IP address works. What is the most likely issue?

A technician is upgrading a server's storage and needs to connect multiple SATA SSDs. The motherboard has only four SATA ports, but the technician needs to connect six drives. Which connector solution should be used?

A small office uses a network switch with 24 RJ45 ports to connect all workstations. The switch is connected to the router via a single uplink port. Users report intermittent network drops. The technician suspects a faulty cable between the switch and router. Which tool should be used to test the cable?

A technician is deploying a fleet of tablets for field workers. The tablets need to connect to a cellular network for data, but the company wants to minimize data usage. Which setting should the technician configure on each tablet?

A technician is deploying a wireless network in a large warehouse with metal shelving. The goal is to provide seamless roaming for handheld scanners. Which technology should the technician implement to ensure clients quickly switch between access points without dropping connections?

During a network upgrade, a technician configures a new VoIP phone to use a dedicated VLAN for voice traffic. After connecting the phone to a switch port configured for voice VLAN, the phone powers on but cannot register with the call manager. The switch port is set to trunk mode. Which protocol is essential for the phone to obtain its VLAN assignment?

A user reports that their inkjet printer produces output with horizontal white lines through text and images. The printer has been used heavily for months without maintenance. What should you do to resolve this issue?

A customer reports that after a recent fall, their smartphone's screen is completely black, but the device still vibrates when calls come in. The technician suspects the display cable is loose. What is the correct sequence of steps to access and reseat the display cable?

A technician is configuring a new NAS with four 10 TB hard drives. The customer wants maximum usable capacity with fault tolerance for one drive failure. The technician sets up RAID 5, but after initialization, the usable capacity is only 10 TB instead of the expected 30 TB. What is the most likely cause?

A company deploys a new 802.11ax (Wi-Fi 6) access point to support high-density environments. Some older laptops with 802.11ac adapters cannot connect, while newer Wi-Fi 6 laptops work fine. The SSID is broadcast and security is set to WPA2. What is the MOST likely cause?

A user reports that their computer randomly restarts when playing games. The technician suspects the CPU is overheating. Which tool should the technician use to monitor the CPU temperature under load?

A user reports that their laptop can see multiple Wi-Fi networks but cannot connect to any of them. Other devices in the same location connect without issue. What is the most likely cause?

A company deploys a new multifunction printer that supports both USB and network connectivity. The printer is installed in a conference room and must be accessible to all employees on the same subnet. Which connection method should the technician use?

A user reports that their multifunction printer makes a loud grinding noise when printing, and the output has vertical black streaks. The technician has already replaced the toner cartridge. What component is most likely failing?

A technician is configuring a high-performance workstation for scientific simulations that require large amounts of RAM. The motherboard has eight DDR4 slots and supports quad-channel memory. The technician installs four 16 GB sticks in the correct slots for quad-channel mode. After booting, the system reports 64 GB of RAM but only runs in dual-channel mode. What is the most likely cause?

A user on a corporate iPhone cannot receive push notifications from the company's email app, even though notifications are enabled in the app settings. Other apps on the phone receive notifications normally. What should the technician check first?

A client wants to add a second internal hard drive to their desktop for additional storage, but all SATA ports on the motherboard are already used. What is the best solution?

A technician is upgrading a client's laptop from 8 GB to 16 GB of RAM. After installing the new module, the laptop powers on but the screen remains black, and the system emits a series of short beeps. What is the most likely issue?

A user reports that a virtual machine running on a workstation is extremely slow, especially during high I/O operations. The host has 16 GB of RAM, an SSD, and a quad-core CPU. The VM is configured with 8 GB RAM and 4 vCPUs. What is the most likely cause of the performance issue?

A network engineer is designing a new data center and needs to connect multiple servers to a core switch with redundant paths. To prevent loops while allowing failover, which networking hardware feature should be implemented?

A technician is configuring a cloud-based virtual machine for a developer who needs to run a custom application that requires 16 GB of RAM and 4 vCPUs. The technician selects an instance type that meets these specs. After launching, the developer complains the application runs slowly. What is the most likely cause?

A user reports that their internet connection drops out frequently, especially during rainstorms. They have a dish mounted on their roof. Which connection type are they most likely using?

A technician upgrades a PC from a traditional HDD to an NVMe SSD. After installation, the BIOS detects the SSD, but Windows does not appear in the boot menu. What should the technician do to resolve this?

You are building a new gaming PC and have installed a 750W 80+ Gold power supply. After connecting all components, the system powers on for a second then immediately shuts down. What is the most likely cause?

A technician is configuring a remote desktop solution for a user who needs to access their Windows workstation from home. Which port must be forwarded on the router for RDP (Remote Desktop Protocol)?

A technician is troubleshooting a network where one workstation intermittently loses connectivity. The cable run is 85 meters and passes through a conduit with several sharp bends. The cable tester shows intermittent shorts. Which cabling issue is most likely?

A user cannot connect to a remote server using RDP. The network team confirms that the firewall allows outbound traffic on all ports. Which port is typically used for RDP and should be verified on the server side?

A technician is configuring a network monitoring tool that uses SNMP to query network devices. Which two ports should be allowed for SNMP communication?

A technician is installing a new network-connected laser printer in a conference room. After connecting the Ethernet cable and power, the printer's control panel shows an IP address of 169.254.3.18. What is the most likely issue?

A small office experiences intermittent Wi-Fi drops on laptops but not on desktops connected via Ethernet. The wireless network uses 2.4 GHz. Which of the following is the MOST likely cause?

A user's PC randomly restarts during heavy workloads, such as video rendering. The CPU temperature reads 95°C under load. The heatsink fan is spinning, but the thermal paste appears dry and cracked. What is the most effective first step?

A technician is upgrading a client's older PC from 8 GB to 16 GB of DDR3 RAM. After installing the new modules, the system boots but only recognizes 8 GB in the BIOS and Windows. The technician has tried reseating the RAM and swapping slots. What should the technician check next?

A customer reports that their Android smartphone's screen remains black when they press the power button, but the device vibrates when receiving calls. They have already tried a force restart by holding Power+Volume Down for 15 seconds. What should you do next to isolate the issue?

A customer reports that their smartphone connects to Wi-Fi at home but cannot connect to the corporate Wi-Fi network at their office. The office uses WPA2-Enterprise with 802.1X authentication. What is the most likely reason for the connectivity failure?

A user complains that their LCD monitor has a persistent dark spot in the center of the screen that does not change with different images. What is the most likely issue?

A technician is upgrading a workstation from a dual-core CPU to a quad-core CPU. After installation, the system boots but only shows two cores in the operating system. The technician has already verified the CPU is properly seated. What is the most likely cause?

A user reports that their monitor displays a 'No Signal' message when they turn on their computer. The monitor is connected via DisplayPort. The technician checks that the monitor is powered on and the cable is secure. What should the technician check next?

A user reports that their laptop's built-in display shows a dim image that is barely visible even at maximum brightness. An external monitor works perfectly. The laptop uses an LED-backlit screen. What component is most likely failing?

A technician is configuring a tablet for field workers who need to transfer large files to a central server. The tablet has a USB-C port. Which connection method provides the fastest data transfer speed?

A small office uses a legacy 2.4 GHz wireless b/g router. Employees report frequent disconnects and slow speeds, especially when the microwave is used in the break room. Which change would most directly reduce interference in this scenario?

A customer complains that their Wi-Fi signal is weak in a specific conference room. You need to measure the signal strength and identify potential interference sources. Which tool is best suited for this task?

A technician is installing a new server in a data center and needs to connect it to a 10GbE switch. The server has an SFP+ port, and the switch also has SFP+ ports. The technician has a selection of cables: Cat6a, Cat7, multimode fiber with LC connectors, and single-mode fiber with SC connectors. Which cable should the technician use?

A user reports that their computer is connected to the network but cannot access any websites. The technician checks the IP configuration and sees an IP address of 169.254.1.5. What does this indicate?

A customer complains that their LCD monitor has a persistent faint shadow of the previous image visible on the screen, even after changing applications. What is the most likely cause of this issue?

After updating the firmware on a workstation, the system fails to boot and displays a 'Boot Device Not Found' error. The hard drive is detected in UEFI settings. What is the most likely cause?

A technician is configuring a company-issued Android tablet for a field worker. The worker needs to use a specific business app that requires location access to log job sites. What should the technician do to ensure the app works correctly?

A network administrator needs to connect two switches that are 200 meters apart. The connection must support 1 Gbps speed. The administrator has Cat5e cable available. However, Cat5e is only rated for 100 meters at 1 Gbps. Which device can be used to extend the distance without replacing the cable?

A user complains that their VoIP phone intermittently loses audio during calls. The phone is connected to a PoE switch. The technician checks the switch and sees that the port's PoE power budget is at 95% capacity. What is the most likely cause of the audio drops?

A small office has several desktop PCs that are experiencing intermittent blue screen errors, especially when running multiple applications. The IT support team suspects faulty RAM. Which tool should they use to test the memory modules?

A technician is troubleshooting a VM that fails to boot with an error 'Operating system not found'. The VM was just created from an ISO file. What is the most likely cause?

A customer wants to install a modular power supply in their PC but notes that the included cables have different pin shapes on the PSU end. What should the technician advise?

A user wants to mirror their Android smartphone's screen to a smart TV that does not support Miracast. The TV has HDMI and USB ports. Which device should the technician recommend?

A customer reports that their desktop computer, which is connected to the network via a wall jack, can access the internet but cannot see other computers on the same local network. The network uses a single switch and a router. What is the most likely misconfiguration causing this issue?

A technician is troubleshooting a PC that shuts down randomly after a few minutes of use. The technician measures the +12V rail with a multimeter and gets 11.2V. The +5V rail reads 4.9V, and the +3.3V rail reads 3.2V. What is the most likely diagnosis?

A technician is building a new PC for a graphic designer who needs to run Windows 11. The technician installs a 2 TB NVMe SSD and 32 GB of RAM. During Windows installation, the installer reports that the drive cannot be used because it uses the MBR partition table. What UEFI setting or action should the technician change?

A technician is troubleshooting a fiber optic connection where the ONT (Optical Network Terminal) has a red 'LOS' (Loss of Signal) light. The fiber cable appears intact. What should the technician check next?

A user's laptop cannot connect to any network after a recent OS update. The Wi-Fi adapter shows as enabled in Device Manager with no errors, and other devices on the same network work fine. What should the technician do first?

A user reports that their USB 3.0 external hard drive is transferring data at very slow speeds, around 30 MB/s, when connected to a front-panel USB port. The same drive works at expected speeds (over 100 MB/s) on a rear USB port. Which connector-related issue is most likely?

A user reports that their laptop's built-in webcam is not working in any application. The device manager shows the camera with a yellow exclamation mark. The technician has already updated the driver to the latest version, but the issue persists. What should the technician do next?

A technician is configuring a new file server and wants to ensure that when users type \\fileserver in File Explorer, it resolves to the correct IP address. The network uses a Windows domain with Active Directory. Which network service should the technician configure to allow hostname resolution for this server?

A technician is deploying a fleet of tablets for a retail store that uses a captive portal for guest Wi-Fi. After connecting to the Wi-Fi, the tablets do not automatically open the login page. What is the most likely missing configuration?

A customer reports that their laptop's touchpad is unresponsive after they spilled a small amount of liquid on the keyboard. The laptop still powers on and the keyboard works. What is the most likely issue?

A customer reports that their external USB hard drive is not recognized when plugged into the front USB ports of their desktop, but it works fine on the back ports. What is the most likely cause?

A customer says their PC randomly freezes and sometimes displays a blue screen error. You run diagnostics and find that the CPU passes all tests, but the system still crashes. Which component should you check next as a likely cause of CPU-related instability?

A user reports that they cannot send emails from their Outlook client, but they can receive emails. The email server is using standard ports. Which port is most likely blocked on the firewall?

A user has a laptop with 8 GB of RAM and runs a Type 2 hypervisor to test a Linux VM. The VM is configured with 4 GB of RAM, but the user notices the host OS becomes sluggish whenever the VM is running. The technician checks resource usage and finds the host is using 6 GB of RAM before starting the VM. What should the technician adjust to improve performance?

A technician is configuring a cloud-based virtual machine for a web server. The VM needs to handle traffic spikes automatically without manual intervention. Which cloud characteristic should be enabled?

A technician is troubleshooting a desktop PC that displays vertical colored lines across the screen immediately after booting. The lines appear even before the operating system loads. What is the most likely cause?

A technician is setting up a multifunction printer for a small business that wants to allow employees to print from their smartphones. The printer does not have Wi-Fi Direct, but it is connected to the company's wired network. Which solution would enable mobile printing?

A small business reports that employees can access the internet but cannot reach the internal company website hosted on a local server. The server's IP address is 192.168.1.10, and clients use DHCP. What is the most likely cause?

A user complains that their wired connection drops randomly for a few seconds then reconnects. The technician suspects electromagnetic interference (EMI) from nearby power cables. Which tool can best confirm the presence of excessive EMI on the network cable?

A company has a network with the IP range 172.16.0.0/16. They need to create 8 separate subnets for different departments, each with at least 1000 usable hosts. What subnet mask should be used?

A user complains that their laptop's Wi-Fi connection drops frequently when a Bluetooth mouse is active. The laptop is a recent model with built-in Wi-Fi and Bluetooth. What is the most likely cause?

A user reports that their smartphone's wireless charging pad stops charging after a few minutes, and the phone gets very hot. The phone supports Qi wireless charging. The technician tests the pad with another phone and it works fine. What is the most likely cause?

A small office has an inkjet printer that produces prints with horizontal white lines across the page. The lines appear in different positions on each print. Which step should the technician take first?

A user reports that their computer can access the internet but cannot connect to a network printer that is on the same subnet. The technician pings the printer’s IP address from the computer and gets a reply. What is the most likely cause?

During a deployment, you install a new graphics card into a desktop PC. After powering on, the system boots but the display is blank. The monitor is known to work, and the card's fans spin. What should you check next?

A user wants to connect their laptop to a 4K external monitor using a USB-C port that supports DisplayPort Alt Mode. The monitor has only HDMI input. Which adapter or cable is required?

A user reports that their laptop's 1TB hard drive is making a clicking sound and the system is running very slowly. The technician runs a diagnostic and finds multiple bad sectors. What should the technician do first?

A small business runs a legacy application that requires Windows 7. The company wants to upgrade all desktops to Windows 11 while still running that application. Which virtualization solution would allow the application to run on the new OS without compatibility issues?

A technician is installing a thermal printer for a retail point-of-sale system. The printer uses direct thermal paper. What must the technician verify to ensure proper operation?

During a network upgrade, a technician needs to document the physical path a cable takes from a workstation to the patch panel in the server room. Which tool is specifically designed to trace the exact cable route through walls and ceilings?

A network printer in a busy law office is shared by 15 users. Several users report that their print jobs are not being output, but the printer shows no error lights and the print queue appears empty. The printer is connected via Ethernet. Which step should be taken first?

A technician is configuring a high-performance workstation with 128 GB of RAM using eight 16 GB DDR5 modules. The system boots but only shows 64 GB in the BIOS. The technician has reseated all modules and verified they are in the correct slots. What is the most likely cause?

A user reports that their laptop's built-in display shows distorted colors and horizontal lines, but when they connect an external monitor via VGA, the external display works perfectly. What is the most likely cause?

A technician is troubleshooting a workstation that fails to boot. The motherboard has a 24-pin ATX power connector and an 8-pin CPU power connector. The power supply has a 20+4 pin main connector and a 4+4 pin CPU connector. The technician connects the 20+4 pin to the motherboard correctly, but the system still does not power on. What should the technician check next?

A technician is setting up a mobile point-of-sale (POS) system using a tablet and a Bluetooth receipt printer. The printer pairs but prints garbled text. The tablet is running a custom POS app. What is the most likely cause?

A technician is upgrading a server that requires ECC (Error-Correcting Code) RAM. The technician has a box of non-ECC DDR4 modules from a desktop. Can these be used in the server?

A technician is setting up a new tablet for a field worker who needs to capture signatures from customers. The tablet has a standard USB-C port. Which accessory is most appropriate for this task?

A technician is troubleshooting a server that uses a hardware RAID controller with a 1 GB cache. The server experiences periodic write performance drops, and the event log shows 'Cache battery low' warnings. What is the most likely impact of this condition?

A technician is building a new workstation for a video editor who needs to run memory-intensive applications. The motherboard supports DDR4 RAM and has four DIMM slots. The editor wants 32 GB of RAM. Which configuration should the technician choose for optimal performance?

A user complains that when they scan a double-sided document using the automatic document feeder (ADF) on their multifunction printer, the back sides of the pages are blank. The printer supports duplex scanning. What is the most likely cause?

A user reports that their PC emits a continuous series of short beeps and will not display anything on the screen. The system was working fine after a recent RAM upgrade. What is the most likely cause of this issue?

A field technician frequently uses a ruggedized tablet outdoors for data collection. They complain that the screen is hard to read in direct sunlight. Which accessory would best improve screen visibility without adding significant bulk?

A technician is installing a new network printer in a corporate environment. The printer supports both USB and Ethernet connectivity. The office requires that all users on the same subnet be able to print without needing a dedicated print server. What configuration method should the technician use?

A technician is setting up a new file server and wants to ensure that clients can automatically obtain the server's IP address via a friendly name without manual configuration. Which network service should be configured on the server?

A technician is setting up a small network for a home office. The router's WAN port receives a public IP of 203.0.113.5 from the ISP. The technician configures the LAN with a private IP range. Which of the following is a valid private IP address for the technician to assign to a workstation?

A customer reports that their laptop can connect to the internet at home but not at a coffee shop. The coffee shop uses a /24 subnet with a gateway of 192.168.1.1. The laptop's IP is 192.168.2.10. What is the most likely cause?

A user reports that when they send a print job to the MFP, the job appears in the print queue but never prints. Other users can print without issues. The MFP is connected via Ethernet. What is the most likely cause?

A server in a data center has redundant power supplies (1+1 configuration). One PSU's status LED is amber, and the other is green. The server continues to run normally. What action should be taken?

A technician is configuring a new router for a client who has a fiber-optic internet connection. Which type of interface is most likely used to connect the router to the ISP's ONT (Optical Network Terminal)?

A customer brings in a tablet that will not turn on. The technician presses the power button and sees no response. The tablet was working earlier in the day. What is the first step the technician should take to troubleshoot this issue?

A technician is configuring a RAID array in a server that requires both high performance and fault tolerance. The server has four identical 2TB SATA HDDs. The RAID controller supports RAID 0, 1, 5, and 10. Which RAID level should the technician choose to meet both requirements?

A company uses a public cloud IaaS provider. The security team discovers that a virtual machine's data disk was accidentally deleted by an administrator. They need to recover the data from a snapshot taken 24 hours ago. The snapshot is stored in the same cloud region. What is the most efficient recovery method?

A user reports that their desktop computer's display is very dim, even at maximum brightness settings. The monitor is an older LCD model with a CCFL backlight. What component is most likely failing?

A user reports that their iPhone cannot send or receive MMS messages, but SMS works fine. They have enabled cellular data. What is the most likely missing configuration?

A user reports that their PC randomly shuts down after about 30 minutes of use. You suspect a thermal issue. Which motherboard component is most directly responsible for monitoring CPU temperature and initiating a shutdown if it exceeds safe limits?

A technician is troubleshooting an issue where a user's computer can access the internet but cannot connect to a network printer by its IP address. The printer is on the same subnet and is powered on. Pinging the printer's IP from the computer fails. Which network service is most likely causing the problem?

A user complains that their internet is slow in the evenings, especially when streaming video. They have a cable modem and a wireless router. What is the most likely cause?

A customer complains that their laptop battery no longer holds a charge and the laptop only works when plugged in. The technician confirms the battery is removable. What is the most appropriate first step in servicing this issue?

A customer complains that their desktop computer loses network connectivity every time a large file is transferred. The issue does not occur during normal web browsing. What hardware component is most likely at fault?

A technician is setting up a wireless network for a home office that requires the fastest possible speeds for streaming 4K video. The router supports 802.11ac and has three antennas. Which configuration will yield the highest throughput?

A technician is upgrading a server's power supply to support additional drives. The current PSU is a 750W unit with a single +12V rail rated at 62A. The new drives will add 5A to the +12V load. The total calculated +12V load is 58A. Is the current PSU adequate?

A user reports that their laptop can connect to the corporate Wi-Fi but cannot access the internet. Other devices on the same network work fine. What is the most likely cause of this issue?

A user reports that their email client can receive messages but cannot send any. The email server settings are correct, and the user can connect to the internet. The firewall is blocking outbound traffic on certain ports. Which protocol and port combination is likely blocked?

A technician is tasked with enabling hardware-level virtualization on a desktop to run a virtual machine. Which UEFI setting must be enabled?

A technician is deploying a point-to-point wireless bridge between two buildings 500 meters apart. The link must support at least 1 Gbps throughput. Both buildings have clear line of sight. Which antenna type and frequency combination is most appropriate?

A user is traveling internationally and complains that their smartphone's cellular data stopped working after landing. They have an international roaming plan activated. What should the technician check first to restore data connectivity?

A technician is setting up a new file server and needs to ensure that users can access shared folders using a friendly name like \\fileserver\share instead of an IP address. Which protocol must be configured correctly on the network?

A technician is troubleshooting a laser printer that produces pages with a repeating smudge mark every 3 inches down the page. The printer uses a toner cartridge with an integrated drum. What component is most likely causing this defect?

A technician is troubleshooting a display that shows a 'ghost' image of a previous screen that fades slowly. The monitor is a 4-year-old IPS panel. What is the most likely cause?

A technician is configuring a new web server that must support both standard and encrypted web traffic. Which two ports should be opened in the firewall?

A technician is setting up a new wireless network for a warehouse. The warehouse has metal shelving and concrete walls. Which wireless standard should the technician choose to maximize range and penetration through obstacles?

A company is migrating its fleet of 100 desktops from Windows 10 to Windows 11. The IT department needs to enable TPM 2.0 and Secure Boot on each system via the UEFI. Some older systems have TPM disabled by default. Which UEFI setting must be changed to enable TPM?

A technician is replacing a cracked screen on a smartphone. After removing the old screen, they notice a small, flat, rectangular component with a metal shield is loose near the battery connector. What should they do?

A customer reports that their desktop PC emits a series of long, continuous beeps and the screen remains blank. They recently installed a new graphics card. What is the most likely cause?

A technician is deploying a cloud-based application that requires a specific operating system and database. The company wants to avoid managing the underlying OS and patches. Which cloud service model should be used?

A network administrator configures a router to use OSPF for dynamic routing between two branch offices. After configuration, routes from one office are not appearing in the other's routing table. Both offices can ping each other's directly connected interfaces. Which protocol issue is most likely preventing route exchange?

During a routine hardware upgrade, a technician installs a new CPU into a workstation. After powering on, the system emits a series of long beeps and the screen remains blank. What is the most likely cause?

A technician is configuring a new PC for a user who runs multiple virtual machines. The motherboard has an AM5 socket. Which CPU feature is most important for this workload?

A client brings in a desktop that will not power on. The technician verifies the power cord is connected and the PSU fan does not spin when the power button is pressed. What is the most appropriate next step?

A technician is deploying 20 new tablets for a hospital's nursing staff. After configuring Wi-Fi and email, they find that the tablets will not connect to the corporate 5 GHz wireless network, only to the 2.4 GHz network. All tablets are the same model. What is the most likely cause?

During a printer installation, the setup wizard asks for the printer's IP address. The multifunction device is connected via Ethernet and has a static IP. Where can you find the IP address on the printer itself?

A technician is troubleshooting a network where a single workstation cannot access any network resources. The link light on the NIC is solid, and the IP configuration shows an address of 192.168.1.100 with a subnet mask of 255.255.255.0. The workstation can ping its own IP but not the default gateway (192.168.1.1). What is the most likely cause?

A technician is tasked with connecting a legacy projector that only has a VGA input to a modern laptop that has only HDMI and USB-C outputs. Which adapter should the technician use?

A small office uses an inkjet printer that has started leaving horizontal white streaks across printed documents. The user has already run the printer's cleaning cycle twice with no improvement. What should the technician do next to resolve this issue?

A user complains that their iOS device's screen brightness automatically dims when using a particular streaming app, but stays normal with other apps. The auto-brightness setting is enabled. What is the most likely reason?

A technician is installing a new SSD into a customer's laptop. After removing the bottom cover, they see the existing hard drive is held in place by a metal bracket and a single screw. What is the correct next step?

A technician is installing a new network drop in a warehouse where the cable must run near high-voltage machinery. The run is 60 meters. Which type of cable should be used to minimize interference?

During a routine hardware upgrade, a technician installs a new graphics card. The system powers on but no display appears. The old card works fine. What UEFI setting should be checked first?

A company deploys a new web server and wants to ensure that data transmitted between clients and the server is encrypted. The technician configures the server to use a certificate. Which protocol should be enabled on the server?

A technician is troubleshooting a network drop that was working yesterday but now shows 'No Link' on the switch port. The cable run is through a conduit in the wall. The technician tests the cable with a continuity tester and finds that pins 1, 2, 3, and 6 are good, but pins 4, 5, 7, and 8 show no continuity. What is the most likely cause?

A company uses virtual machines for its production environment. A technician needs to perform maintenance on the host server without disrupting the VMs. The technician wants to move the VMs to another host in the cluster while they are running. Which feature must be configured to allow this?

A user reports that their new high-resolution monitor (2560x1440) connected via DisplayPort shows intermittent black screens for a few seconds. The monitor works fine at lower resolutions. What is the most likely issue?

A technician is deploying a 3D printer that uses fused deposition modeling (FDM) in a school lab. After several test prints, the prints are warping at the edges and not adhering to the build plate. The filament is PLA, and the build plate is heated. Which adjustment should be made first?

A technician is troubleshooting a network where a user's computer cannot obtain an IP address via DHCP. The computer is connected to a switch, and other devices on the same switch work fine. The technician checks the switch and sees that the port is up and the link light is green. What should the technician check next?

A small business has several PCs that intermittently reboot or fail to start. The building's electrical system is old, and the technician suspects power quality issues. Which device should the technician recommend installing to protect the computers?

A user reports that their laptop's touchpad is not working after they spilt a small amount of coffee on the keyboard. The keyboard still works, but the touchpad cursor does not move. What is the most likely cause?

A user brings in a smartphone with a cracked screen that is still responsive to touch. The device is an older model, and the user wants the screen replaced rather than buying a new phone. After powering off the device and removing the SIM and SD cards, what is the next step in the screen replacement process?

A user reports that their laser printer prints fine from Windows, but when they print from a macOS device, the output is garbled with random characters. Both devices are on the same network. What is the most likely cause?

A company's remote employees use VPN to connect to the office network. Recently, some users report that they can connect to the VPN but cannot browse the internet or access internal servers by name, though they can ping internal IP addresses. The VPN is configured to push DNS settings. Which protocol is likely misconfigured on the VPN server?

A small business has a single router with four built-in switch ports. They need to connect 12 wired devices. They have a 24-port unmanaged switch. Which configuration will provide the best network performance and connectivity?

A technician is deploying a new workstation in a retail store. After connecting all peripherals and power, the system powers on but the monitor shows 'No Signal'. The monitor is connected via VGA to the motherboard. What should the technician check first?

A technician is selecting a CPU for a compact home theater PC (HTPC) that will be passively cooled. Which CPU characteristic is most critical to ensure reliable operation without a fan?

A company's IT department is deploying new VoIP phones. After connecting a phone to a PoE switch, the phone does not power on. The switch port is configured for PoE and shows no errors. Which tool should be used to verify that the Ethernet cable delivers power correctly?

A user complains that their wireless connection drops frequently, but only when they are in the conference room. Other areas of the office have stable connections. What is the most likely cause?

A network administrator needs to segment traffic between the accounting and HR departments to prevent unauthorized access, while still allowing both to reach the internet. The company uses a single managed switch and a router. Which configuration approach meets these requirements?

A technician is troubleshooting a server that uses a RAID 5 array with three 2 TB HDDs. The array reports 4 TB of usable space. One drive fails. What is the immediate impact on data availability?

A user wants to print a high-resolution photo on glossy paper using an inkjet printer. After printing, the colors appear washed out and the photo has a grainy appearance. The printer is set to 'normal' quality and 'plain paper' in the driver. What should the technician change to improve the output?

A small office is installing new network drops in a drop ceiling for employee workstations. The IT manager wants to minimize future troubleshooting. Which cabling practice should be followed during installation?

A company's network uses a managed switch with VLANs. Users in VLAN 10 can ping the default gateway but cannot communicate with users in VLAN 20. The switch is connected to a router that handles inter-VLAN routing. What is the most likely misconfiguration?

A user's laptop has a USB-C port that supports Thunderbolt 3. They want to connect two 4K monitors daisy-chained. The monitors have DisplayPort inputs. Which cable configuration is required?

A technician is troubleshooting a laptop that connects to a Wi-Fi network but gets a 'No Internet, Secured' message. The laptop has a static IP address configured. What is the most likely issue?

A company's file server uses a RAID 5 array with five 2 TB HDDs. After a power outage, the server boots but the RAID array is shown as 'Failed' in the controller utility. The drives are all detected. What is the most likely cause and the best first step to recover the array with minimal data loss?

A technician is configuring a new Android tablet for a field worker. The worker will use a Bluetooth barcode scanner and a rugged case with a built-in keyboard. After pairing both devices, the keyboard types slowly and misses keystrokes, while the scanner works fine. What is the most likely cause?

A technician is troubleshooting a tablet that has a dim display that flickers intermittently. The device responds to touch and the OS loads normally. Which component is most likely failing?

A user reports that their fiber-to-the-home (FTTH) internet connection works but is slower than expected. The technician finds that the ONT (Optical Network Terminal) is connected to the router via a 100-meter Cat5e cable. What is the most likely issue?

A technician is setting up a new Android tablet for a point-of-sale system. The tablet must stay on and connected to Wi-Fi at all times, even when the screen is off. Which setting should the technician adjust?

A technician is tasked with building a high-performance workstation for a data scientist who uses large datasets. The workstation has a motherboard that supports quad-channel memory. The technician has four 16 GB DDR4-3200 modules. Which configuration will yield the best memory performance?

A user reports that their laptop battery no longer charges and the system only runs when plugged in. You test the AC adapter and it outputs correct voltage. Inside the battery, which component is most likely failed?

A technician is tasked with setting up a RAID 10 array using four 500 GB HDDs for a database server. After configuration, the total capacity shown is 1 TB instead of the expected 1.5 TB. What is the most likely cause?

A user reports that their laptop screen suddenly went black, but the laptop is still powered on (fans running, power light on). Connecting an external monitor shows the desktop correctly. What is the most likely cause?

A technician is troubleshooting a network where a user's PC has an IP address of 169.254.12.34. The PC is connected to a switch that is uplinked to a router with DHCP enabled. What is the most likely cause?

A user reports that their VoIP phone works but the PC connected to the phone's passthrough port has no network access. What should the technician check first?

During a routine check, a technician finds that a RAID 0 array with two SSDs is no longer bootable. The BIOS detects both SSDs individually but the array is missing from the RAID controller. What is the most likely issue?

A user is building a new gaming PC and wants to install 32 GB of DDR4 RAM in a dual-channel configuration. They have two 16 GB sticks. Which motherboard slots should they use to ensure dual-channel operation?

A user reports that their laptop can connect to the internet via Ethernet but cannot connect to any Wi-Fi networks. The wireless adapter is enabled and shows available networks, but connecting always fails. What is the most likely cause?

A customer reports that their new laptop can connect to websites using IP addresses but cannot resolve domain names like 'www.example.com'. Which networking tool should be used to verify the DNS server configuration on the laptop?

A company's multifunction printer supports faxing over VoIP. Users report that faxes are frequently incomplete or fail to send. The fax line is connected to an analog telephone adapter (ATA). What should you check first?

A small business owner wants to connect five computers in a single office so they can share files and a printer without purchasing a server. Which network type should be configured?

A technician is tasked with upgrading a workstation that uses DDR3 RAM. The technician purchases DDR3L modules (low voltage) and installs them. The system fails to boot. What is the most likely reason?

You are building a workstation for video editing and need to install a dedicated GPU in the primary PCIe x16 slot. After installation, the system boots but the GPU is not detected in Device Manager. The GPU works fine in another PC. What should you check on the motherboard?

A technician is setting up a new all-in-one PC for a reception desk. The PC has a touchscreen display. After installation, the touch function does not respond. The technician has verified that the display works and the OS is loaded. What should the technician check first?

A user complains that their external monitor flickers intermittently when connected via a VGA cable to their laptop. The laptop has a VGA port, and the monitor works fine with another computer. Which connector-related issue is most likely?

A network administrator is setting up a new branch office. The branch router must automatically obtain a public IP address from the ISP, and internal devices must receive private IP addresses from the router. Which combination of network services should be configured on the router?

A user complains that they can browse the internet but cannot access network shares on a file server by hostname, though they can access them by IP address. The DNS server is responding to queries for other domains. Which protocol is most likely malfunctioning?

During a routine printer maintenance, you replace the toner cartridge in a laser printer. After reassembly, the printer displays 'Replace Toner' error even though the new cartridge is installed. What should you do first?

During a hardware installation, you are tasked with setting up a RAID 1 array in a server using two identical 4 TB HDDs. After configuration, the total usable capacity is only 4 TB. Is this expected behavior?

A small business wants to migrate its email and document collaboration to the cloud but must keep sensitive financial records on local servers due to regulatory requirements. Which cloud deployment model should they choose?

A user reports that their Android phone will not install an app from the Google Play Store. The device has plenty of storage space and a strong internet connection. What is the most likely cause of this issue?

A user reports that their iPhone will not connect to a Bluetooth speaker that is in pairing mode. The speaker is listed in the iPhone's Bluetooth settings but tapping it does nothing. What should the technician try first?

During a site survey, a technician finds that a new access point on the 2.4 GHz band is experiencing heavy interference. The access point automatically selected channel 6. Which action should the technician take to minimize interference?

A technician is troubleshooting a network where users can access internal resources but cannot reach any external websites. The internal network uses a proxy server. The technician finds that the proxy server is configured to use a specific protocol to forward requests to the internet. Which protocol is the proxy server most likely using to communicate with external web servers?

A customer complains that their inkjet printer's output has horizontal white lines across the page. The cartridges are new and the printer passes a nozzle check pattern. What should the technician check next?

A small office has a single switch connecting all workstations. Several users report that they cannot access the internet, but they can still communicate with each other on the local network. What is the most likely cause?

A technician is configuring a corporate iPhone for a new executive. The user needs to access company email, calendar, and contacts, but the company requires that all data be encrypted and the device be remotely wipeable. Which configuration step is essential?

A technician is configuring a small network with five computers and a printer. The network must use private IP addresses and allow all devices to communicate. The technician assigns IPs manually but forgets to set a default gateway on one computer. Which functionality will be lost on that computer?

A user reports that their laptop cannot connect to the internet, but other devices on the same wired network work fine. The technician checks the IP configuration and sees the laptop has an IP address of 169.254.3.12. What is the most likely cause?

A company uses a custom Android app that stores data locally. After a recent OS update, the app fails to write data to the internal storage, but it can read existing data. The app has all necessary permissions. What is the most likely cause?

A customer reports that their laptop connects to the office Wi-Fi but cannot access the internet. Other devices on the same network work fine. The technician checks the laptop's IP configuration and sees an IP address of 169.254.15.22. What is the most likely cause of this issue?

A user reports that their MFP is making a loud grinding noise when printing, and the output pages have vertical streaks. The MFP is a laser printer with a separate toner cartridge and imaging drum. What is the most likely cause?

A customer reports that their new Bluetooth headphones pair with their smartphone but produce no audio during calls. The headphones work fine with other devices. What is the most likely cause?

A client reports that their 5 GHz Wi-Fi connection works fine near the access point but drops out completely when they move to the next room, which has thick concrete walls. The 2.4 GHz band works throughout the house. Which of the following is the BEST solution?

A client wants to upgrade their workstation with a high-end GPU that requires two 8-pin PCIe power connectors. Their current power supply has only one 6+2 pin PCIe cable. What is the best solution to safely power the new GPU?

A user's iPhone connects to a public Wi-Fi hotspot but cannot load any web pages. The Wi-Fi icon shows full signal. Other devices on the same network work fine. What is the most likely issue?

A small business uses an MFP that also functions as a network scanner. Users can scan to a shared folder on a Windows PC, but some users get an 'Access Denied' error when scanning. Other users can scan successfully. What is the most likely cause?

A user complains that their wireless Bluetooth earbuds frequently disconnect during calls when their smartphone is in their pocket. The earbuds work fine when the phone is on a desk. Which accessory or configuration change is most likely to resolve this issue?

A technician is replacing a failed motherboard in a desktop PC. The original motherboard had an LGA1151 socket. The replacement motherboard has an LGA1200 socket. The technician attempts to install the original CPU but finds it does not fit. What is the most likely reason?

A user wants to add a second hard drive to their desktop for extra storage, but the computer only has one SATA data cable available. The technician has an extra SATA power cable from the power supply. What is the most practical solution?

A laptop's touchpad is not working correctly; the cursor jumps erratically. You have already updated the driver and checked for debris. What hardware component should you inspect or replace next?

A technician is troubleshooting a display that shows vertical lines across the entire screen. The lines persist when a different video cable is used, and the monitor works fine when connected to another computer. What is the most likely cause?

A technician is building a new workstation for video editing and needs to ensure the power supply can handle dual GPUs and multiple hard drives. Which specification is most critical to check when selecting a PSU?

A user connects a USB-C docking station to their laptop and finds that the external monitor works, but the Ethernet port on the dock does not provide network connectivity. The laptop's built-in Wi-Fi works fine. Which is the most likely cause?

A small office has a multifunction device that prints, scans, and faxes. Users report that incoming faxes are not being received, but outgoing faxes work. The MFP is connected to a VoIP phone system. What is the most likely issue?

A user reports that their laptop's battery drains quickly when connected to a USB-C docking station, even when the laptop is plugged into the dock's power delivery port. The dock supports 60W power delivery, but the laptop requires 65W. What is the most likely issue?

A user complains that their PC is running slowly, especially when opening multiple browser tabs. The system has 4 GB of RAM installed, and the OS is Windows 10 64-bit. Task Manager shows memory usage consistently at 90-95%. Which upgrade would provide the most immediate performance improvement?

A customer wants to connect two buildings that are 200 meters apart with a high-speed network link. Which cabling solution is most appropriate?

A user complains that their laser printer is picking up multiple sheets of paper at once, causing jams. The paper tray is full of standard 20 lb bond paper. Which component is most likely causing this issue?

A technician is troubleshooting a PC that boots to a blue screen with the error 'INACCESSIBLE_BOOT_DEVICE' after a user attempted to clone their HDD to an SSD. The BIOS detects both drives. What is the most likely cause?

A company's network uses a 10.0.0.0/8 private IP scheme. A remote user connects via VPN and gets an IP of 172.16.0.5. They can access the internet but cannot reach internal servers at 10.1.1.50. What is the most likely cause?

A small business owner wants to set up a network that covers three separate buildings within a 200-meter radius, with no internet access required between them. They need a simple, low-cost solution that can be installed quickly without running cables between buildings. Which network type should be recommended?

A marketing department wants to access a shared calendar and document editing tools without installing any software on their local machines. Which cloud service model would best meet this requirement?

A graphic designer wants to connect three 4K monitors to a single workstation for a video editing suite. The workstation has a graphics card with one HDMI 2.0 port, one DisplayPort 1.4, and one DVI-D port. The monitors all support HDMI and DisplayPort. Which configuration will allow all three monitors to display at 4K resolution simultaneously?

A technician is diagnosing a PC that will not power on. The multimeter shows 0V on all pins of the 24-pin connector when the PSU is plugged in and the power switch is on. What is the most likely cause?

A customer reports that their desktop PC, which originally had 8 GB of RAM, is now very slow after they installed a second 8 GB stick. The system boots and shows 16 GB in the BIOS, but the OS only reports 8 GB usable. What is the most likely cause?

A user reports that their smartphone's screen protector has a large bubble in the center and the edges are lifting. They installed it themselves two days ago. What is the most likely cause of this issue?

A small office uses an inkjet printer that has started leaving horizontal white lines across printed documents. The printhead cleaning cycle has been run twice without improvement. Which step should be taken next?

A company uses a cloud-based customer relationship management (CRM) application. The vendor handles all updates, security patches, and infrastructure maintenance. Which cloud service model does this represent?

A technician is troubleshooting a customer's home network where the desktop PC is wired to the router, but the wireless printer intermittently disappears from the network. The printer is connected via Wi-Fi to the same router. After checking, the technician finds that the printer's IP address is in the 169.254.x.x range. Which network type is the printer attempting to use, and what does this indicate?

A user says their monitor suddenly turned off and will not power on. The power LED on the monitor is off. They have checked the power cable and it is securely connected. What should the technician do next?

A technician is deploying a wireless network in a large warehouse and needs to ensure seamless roaming for handheld scanners as workers move between access points. Which technology should the technician configure to support this requirement?

A small office has a single internet connection and needs to provide wired network access to 20 computers. They also need to allow guests to connect wirelessly but keep the guest traffic separate from the internal network. Which single device can handle both wired switching and wireless access with VLAN support?

A technician is upgrading a server CPU to improve multi-threaded performance for a virtualization host. The current CPU has 8 cores and 16 threads. Which of the following specifications is most important to consider for compatibility?

A technician is replacing a CPU in a server that uses a LGA 1151 socket. After installing the new CPU and applying thermal paste, the system fails to post. The technician notices the CPU cooler is not making full contact with the CPU. What is the most likely consequence of this poor contact?

A user reports that their computer cannot connect to the internet after being moved to a new office. The computer receives an IP address starting with 169.254.x.x. Which network service is failing to provide a valid IP configuration?

A technician is installing a new M.2 NVMe SSD into a desktop motherboard that has two M.2 slots. After installation, the system boots but the new drive is not detected in the BIOS. What should the technician check first?

A user reports that their new laptop can connect to the office Wi-Fi but cannot access any internet sites. Other devices on the same network work fine. Which tool should be used first to verify the laptop's IP configuration?

A technician is servicing a smartphone with a non-functional earpiece speaker during calls, but the loudspeaker works fine. After testing, the earpiece speaker itself is determined to be good. Which component is most likely faulty?

A help desk ticket reports that a user's PC fails to boot and emits a series of long beeps. The system has two 8 GB DDR4 modules installed. What is the most likely cause of this issue?

A company's web server is accessible from the internet, but users report that they cannot upload files to it using a web browser. The server is configured to allow file uploads via HTTP. Which protocol is most likely being blocked by the firewall?

A user reports that their inkjet printer makes a loud grinding noise when printing, and the paper feeds crookedly. Which component is most likely failing?

A technician is deploying a new server that requires RAID 10 for data redundancy and performance. The motherboard has an onboard RAID controller. After configuring the RAID array in the UEFI RAID utility, the technician installs the OS, but the RAID volume is not visible in the OS installer. What is the most likely cause?

A technician is troubleshooting a desktop that randomly restarts under heavy load. They suspect the RAM is overheating. What type of RAM cooling solution is most commonly integrated into high-performance memory modules?

A network administrator is configuring a small business network with two subnets: 192.168.1.0/24 for employees and 192.168.2.0/24 for guests. The router has two LAN interfaces with IPs 192.168.1.1 and 192.168.2.1. A technician connects a new access point to the guest subnet switch and configures it with a static IP of 192.168.2.50. The access point can ping the router's guest interface but cannot reach the internet. The router's default route points to an ISP modem at 203.0.113.1. What is the most likely missing configuration?

A customer reports that their new VoIP phone cannot register with the company's call server, but their computer on the same switch port works fine. The network uses VLANs for voice and data traffic. Which protocol must be configured on the switch port to separate the voice traffic from the data traffic?

You are deploying 20 identical office PCs. After imaging one system, you clone the drive to the other 19. However, all cloned systems fail to boot with a 'Boot Device Not Found' error. The original system boots fine. What motherboard setting is most likely causing this?

A technician is troubleshooting a desktop PC that powers on but shows no display on the monitor. The monitor's power LED is amber (standby). The PC has an integrated GPU and a discrete GPU. Which step should be taken FIRST to isolate the issue?

A technician upgrades a workstation from Windows 10 to Windows 11, but the installation fails with an error that the system does not support TPM 2.0. The CPU is compatible. What must the technician do in UEFI to resolve this?

A company uses a proxy server for internet access. Users report that they can access internal websites but cannot reach external sites. The proxy server's IP is configured in the browser settings. Which network service is most likely failing?

A network administrator is troubleshooting a slow connection between two buildings connected by a fiber optic link. The link is up but throughput is lower than expected. Which tool should be used to measure the exact signal loss in the fiber?

A user complains that their external USB hard drive is not recognized when plugged into a Windows 10 workstation. The technician checks Device Manager and sees an unknown device with a yellow exclamation mark. What should the technician do first?

A customer calls stating that their Android phone's messaging app is not receiving SMS messages from one specific contact, but all other contacts work. The phone has good signal strength. What is the most likely cause?

A user's laptop connects to the office Wi-Fi but cannot access the internet. Other devices on the same network work fine. The laptop's IP address is 169.254.25.14. What is the most likely cause?

An IT administrator is planning to deploy multiple virtual machines on a single host for a development team. Each developer needs a separate environment with different OS versions. The host has a quad-core CPU with hyper-threading enabled and 32 GB of RAM. The administrator wants to maximize resource utilization while ensuring performance isolation. Which virtualization feature should be configured?

During a network upgrade, a technician replaces an old 10/100 Mbps switch with a new gigabit switch. After the change, several users report that their internet connection is slow. The technician checks the switch and sees that some ports show 100 Mbps instead of 1000 Mbps. What is the most likely cause?

A user complains that their smartphone's screen protector has started peeling off at the edges after a few weeks. They installed it themselves. What is the most likely cause of this problem?

A company's internal DNS server is not resolving hostnames for clients. The technician verifies that the DNS service is running and the firewall allows traffic on port 53. However, clients still cannot resolve names. What is the most likely issue?

A user reports that their external hard drive, formatted as NTFS, is not showing up in Windows Explorer but is visible in Disk Management as 'Not Initialized'. The drive was working yesterday. What is the most likely cause?

A user reports that the multifunction printer is producing copies with a faint vertical line running down the entire page. The line appears in the same position on every copy, but printed documents from a PC do not have the line. What is the most likely cause?

A customer reports that their external USB 3.0 hard drive is only achieving transfer speeds of about 35 MB/s, far below the expected 5 Gbps. The drive is connected to a USB 3.0 port on the front of the computer case. What is the most likely cause of this performance issue?

A technician is troubleshooting a connectivity issue where a user's computer can ping the default gateway but cannot access a web server at 203.0.113.50. The technician runs a tracert and sees that the first hop responds, but subsequent hops time out. What is the most likely cause?

A customer brings in an iPhone that is running iOS 15 and complains that a newly released app crashes immediately upon launch. The app requires iOS 16 or later. What is the best solution?

A user reports that their wireless earbuds produce choppy audio when they walk to the other side of their office, but work fine when near the phone. The office has many metal filing cabinets and concrete walls. Which of the following is the most likely cause of the audio degradation?

A technician is troubleshooting a network where users intermittently lose connectivity to a critical database server. The technician notices that the server's IP address is being duplicated on the network. Which protocol is responsible for detecting and reporting this conflict?

A technician is configuring a company-issued tablet for a sales representative who frequently works from a car. The tablet needs internet access for CRM software and GPS navigation. Which mobile network connectivity option is most appropriate for this scenario?

A technician is troubleshooting a laptop that emits a series of beeps (one long, two short) on startup and displays nothing on the screen. The laptop was working fine until the user installed a new RAM module. What is the most likely cause?

During a hardware upgrade, you install a new high-end graphics card and connect a 144Hz gaming monitor via DisplayPort. The monitor is set to 144Hz in Windows, but the screen occasionally goes black for a few seconds during gameplay. What is the most likely cause?

A customer complains that their smartphone's mobile hotspot stops working after a few minutes. They are using a prepaid data plan. What is the most likely cause?

After deploying a new 802.11ac access point, users report that some devices can connect but others cannot, even though they are in the same room. All devices support 5 GHz. What is the most likely cause?

A technician is setting up a new Android tablet for a warehouse worker who uses a barcode scanner app that requires constant Wi-Fi. The warehouse has multiple access points with the same SSID. The tablet frequently disconnects and reconnects as the worker moves around. What should the technician configure to improve connectivity?

A user reports that their computer is making a loud grinding noise and then shuts down after a few minutes. The CPU temperature is normal at idle. What is the most likely cause?

During a BIOS update on a workstation, the power is interrupted, and now the system fails to POST. The motherboard has a backup BIOS chip. What is the most efficient way to recover the system?

A technician is troubleshooting a desktop that has a 256GB SATA SSD (C:) and a 1TB SATA HDD (D:). The user reports that the system is running very slowly, and the C: drive is nearly full. The technician runs a disk cleanup and removes temporary files, but the C: drive still has only 5GB free. What should the technician do to resolve the performance issue without replacing the SSD?

A technician is setting up a cloud-based application that must handle unpredictable spikes in user traffic. The application should automatically add more virtual servers during peak times and remove them when traffic decreases. Which cloud concept is this?

A technician is building a new workstation for video editing. The motherboard supports LGA 1700 socket CPUs. Which of the following CPUs is compatible with this socket?

A user's smartphone intermittently drops Wi-Fi connection when the device is moved from one room to another. The home uses a single Wi-Fi router. The technician suspects the issue is related to the device's power management. Which setting should be adjusted to maintain a stable connection?

A technician is troubleshooting a desktop that will not boot. The power LED is on, fans spin, but there is no display and no beep codes. The CPU and RAM have been reseated, and the motherboard appears to have power. What should the technician check next?

A user reports that their virtual machine is running very slowly. The host system has 16 GB of RAM, and the VM is configured with 8 GB. The host is running a Type 2 hypervisor on Windows 10. The technician checks Task Manager and sees that the host is using 14 GB of RAM. What is the most likely cause of the VM's poor performance?

A small office server uses RAID 5 with three 1 TB hard drives. One drive fails and is replaced with a new 1 TB drive. During the rebuild process, the server becomes very slow and the RAID controller reports an error. What is the most likely cause of the slowdown?

A customer reports that their desktop computer intermittently freezes and emits a high-pitched whine. The issue occurs more frequently under heavy load, such as when rendering video. Which CPU-related feature is most likely causing this symptom?

During a laptop keyboard replacement, a technician accidentally dislodges a small ribbon cable from the touchpad connector. The touchpad is now unresponsive. The technician has never worked on this model before. What is the best course of action to resolve the issue?

A customer reports that their laptop connects to the office Wi-Fi but cannot access the internet. Other devices on the same network work fine. What is the most likely cause of this issue?

A small office uses a network printer that is shared via a print server. Users report that print jobs are not reaching the printer. The technician pings the print server successfully but cannot connect to the printer's web interface using its IP address. Which protocol is most likely blocked or malfunctioning?

A customer complains that their LCD monitor shows a persistent dark shadow in the upper-left corner that does not change with different input sources. The monitor is three years old. What is the most likely cause?

A user reports that their color laser printer is producing prints with a repeating vertical black line down the left side of every page. The line appears at regular intervals. Which component is most likely causing this defect?

A client wants to upgrade their desktop PC with a new, faster processor. They have purchased a CPU that is listed as compatible with the motherboard's socket type. After installation, the system powers on but displays a blank screen. What is the most likely issue?

A technician is setting up a kiosk mode on an Android tablet for a retail display. The tablet will run a single app that customers use to browse products. After enabling kiosk mode via a third-party app, the tablet reboots and the kiosk app does not start automatically. What should the technician verify?

A technician is troubleshooting a satellite internet connection that has high latency and frequent disconnections. The dish is installed on a roof with a clear view of the sky. What is the most likely cause of the high latency?

A user complains that their laptop's built-in webcam is not working in video conferencing apps. The device manager shows the camera as 'disabled'. The technician enables it, but the camera still shows a black screen in apps. What should the technician do next?

A company uses a Type 1 hypervisor for production servers. A technician needs to migrate a running VM from one host to another without any downtime. Which feature should be used?

A company uses a cloud-based VoIP service, and users report intermittent call drops and poor audio quality. Network monitoring shows high jitter and packet loss. Which service is most likely contributing to the problem?

A technician is troubleshooting intermittent packet loss on a critical link between two buildings. The link uses single-mode fiber optic cable. Which tool is specifically designed to measure the length of the fiber and locate breaks or splices that could cause signal loss?

A technician is tasked with connecting a legacy printer that uses a parallel port to a modern laptop that only has USB ports. Which adapter is required to make this connection work?

A user reports that their computer randomly freezes and displays a blue screen error with the message 'MEMORY_MANAGEMENT'. They recently installed a new 8 GB DDR4 module alongside the existing 8 GB module. Both modules are from different manufacturers and have different CAS latencies. What is the most likely cause of the issue?

A user reports that their PC emits a single short beep and then nothing happens. The screen remains blank, and the keyboard and mouse do not light up. What is the most likely issue?

A technician is troubleshooting a laser printer that frequently jams paper. The jams occur mostly when printing on both sides (duplex). What is the most likely cause?

A technician is deploying a new VoIP phone and needs to ensure the Ethernet cable connecting the phone to the wall jack provides sufficient power for the phone to operate. The network switch supports Power over Ethernet (PoE). Which tool can verify that PoE is active on the cable?

A technician is troubleshooting a workstation that randomly reboots under heavy load, such as when running a benchmark or rendering video. The system passes a memory test with no errors, and the CPU temperatures are normal. The power supply is a 500W unit that is three years old. What is the most likely cause of the reboots?

A technician is building a new gaming PC. The motherboard has two PCIe x16 slots, but the graphics card only works in the second slot. When installed in the first slot (closest to the CPU), the system powers on but no display. What is the most likely cause?

A technician is troubleshooting a wireless network where users experience intermittent drops during peak hours. The access point is an 802.11n model operating on 2.4 GHz. The technician suspects channel congestion. Which tool should the technician use to identify the least congested channel?

A customer reports that their laptop screen flickers intermittently, especially when they adjust the lid angle. The image is clear when the screen is at a specific angle but flickers or goes black at others. What is the most likely cause?

A customer reports that their new rural cabin has no cable TV or phone line, but they need a reliable internet connection for remote work. Which connection type would provide the most consistent service without requiring a wired infrastructure?

A technician is setting up a network printer that supports both LPD (Line Printer Daemon) and IPP (Internet Printing Protocol). The printer must be accessible from Windows and Linux clients. Which port should be opened for IPP?

A customer reports that their new printer, configured with a static IP of 192.168.1.100, cannot be accessed from any computer on the network. The technician pings 192.168.1.100 from a workstation and gets no reply. The workstation's IP is 192.168.1.50 with a subnet mask of 255.255.255.0. What is the most likely cause?

A customer reports that their new Cat6a installation passes a cable certifier test but the link only negotiates at 100 Mbps. The cable run is 90 meters and uses standard T568B terminations. What is the most likely cause of the speed limitation?

A network administrator notices that a critical database server is responding slowly. The server uses both TCP and UDP for different services. Which of the following is a characteristic of UDP that could explain performance issues under heavy load?

A server administrator needs to upgrade a critical database server from 64 GB to 128 GB of RAM. The server uses registered ECC DDR4 memory. They have purchased 8 x 16 GB registered ECC modules. When they install them, the server fails to POST with a memory error. The original 64 GB (4 x 16 GB) modules work fine. What is the most likely reason?

A technician is troubleshooting a home network where the 5 GHz band works fine, but the 2.4 GHz band is extremely slow and drops connections. The router is placed near a cordless phone base station. Which type of interference is most likely occurring?

A user reports that their laptop cannot connect to the internet, but other devices on the same network work fine. The technician runs ipconfig and sees an IP address of 169.254.12.34 with a subnet mask of 255.255.0.0. What is the most likely cause of this issue?

A technician is troubleshooting an iPhone that cannot install or update any apps from the App Store. The device is connected to Wi-Fi, and other internet services (Safari, email) work. What should the technician check first?

A technician is configuring a new server and needs to ensure that only signed operating system bootloaders can be loaded. Which UEFI feature should be enabled?

A technician is installing a new video card in a desktop PC used for graphic design. The card has one HDMI port, one DisplayPort, and two DVI ports. The user wants to connect two 1920x1080 monitors. Which combination of ports and cables will provide the best image quality and support for both monitors?

A technician is configuring a network for a university campus that has multiple buildings spread across a 5-kilometer area. Each building has its own LAN, and they all need to be interconnected to share resources. Which network type best describes the overall campus network?

A user reports that their inkjet printer prints colors that are significantly different from what appears on the screen. The printer uses cyan, magenta, yellow, and black cartridges. What should the technician do first to resolve this issue?

A company's network uses a /24 subnet mask. The IT manager asks a technician to configure a new server with a static IP address of 192.168.1.300. The technician knows this is invalid. What is the reason this IP address cannot be used?

A user complains that their desktop computer cannot connect to any network shares, but they can access the internet. The technician pings the file server by IP address successfully, but pinging by hostname fails. Which network configuration issue is most likely causing this problem?

A technician is configuring a kiosk tablet that must connect to a wired Ethernet network for security reasons. The tablet only has a USB-C port. The network drop provides an RJ45 connection. Which of the following should the technician use to achieve a wired connection?

A user reports that their new Thunderbolt 4 external GPU (eGPU) is not recognized by their laptop, which has a Thunderbolt 4 port. The eGPU works on another laptop. Which connector-related issue is most likely?

A technician is setting up a small office with 15 devices and needs to assign private IP addresses. The router's LAN interface is 10.0.0.1/24. Which of the following is a valid IP address for a workstation on this network?

A small business is moving to a new office that already has a fiber-optic termination point installed. They need the fastest symmetrical speeds for cloud-based applications. Which internet connection type should they choose?

A user reports that their laser printer is producing pages with vertical black streaks. The streaks appear in the same position on every page. Which component is most likely the cause?

A customer complains that their PC randomly shuts down after about 30 minutes of use, especially when playing games. The case feels warm to the touch. What should you check first?

A technician is configuring a new workstation for video editing. After installing a high-end GPU and additional RAM, the system powers on but the screen is blank. The motherboard has diagnostic LEDs; the VGA LED is lit. What is the most likely issue?

A user complains that their VoIP phone intermittently loses connectivity. The phone is connected to a switch via a 50-meter run of solid-core Cat6 cable. You suspect interference from nearby fluorescent lights. Which cabling characteristic is most relevant to this issue?

A technician is troubleshooting a legacy application that uses FTP for file transfers. The transfers work but are extremely slow. The network team mentions that the firewall is configured to inspect traffic on certain ports. Which port should be opened for FTP data transfer to improve performance?

A user complains that they cannot access any websites, but they can ping external IP addresses like 8.8.8.8 successfully. Other devices on the same network work fine. Which network service is most likely failing on this user's computer?

A technician is troubleshooting a server that randomly resets the time and date to 2000 after being powered off for a few hours. The system otherwise boots and runs normally. Which component is most likely failing?

You are troubleshooting a workstation that randomly reboots when running 3D rendering software. The CPU and GPU temperatures are normal. You have already replaced the RAM and tested the hard drive. What component is most likely the root cause?

A customer reports that their new laptop cannot connect to the company's Wi-Fi network, but other devices connect fine. You need to check if the laptop's wireless adapter is functioning properly and can see available networks. Which tool should you use?

A large conference center needs to provide Wi-Fi for 500 attendees. The IT team installs multiple 802.11ax access points. During the event, attendees report slow speeds and frequent reconnections. Analysis shows many clients are on the same channel despite multiple APs. Which advanced feature should be configured to distribute clients more evenly?

A small business uses a router with DHCP enabled, issuing addresses in the 192.168.1.0/24 range. A technician installs a new server with a static IP of 192.168.1.50, but users cannot connect to it. The technician pings 192.168.1.50 from the server itself successfully. What is the most likely cause?

A technician is installing a new power supply in a high-end gaming PC. The PSU has two +12V rails rated at 20A each. The GPU requires a single +12V rail with at least 30A. What potential issue could arise?

A technician is configuring a new printer on a network with the IP 172.16.0.50 and subnet mask 255.255.0.0. The router's LAN IP is 172.16.0.1. A workstation with IP 172.16.1.10 can ping the printer, but a workstation with IP 172.17.0.10 cannot. What is the most likely reason?

A user complains that their external monitor shows a 'No Signal' message when connected to their laptop via HDMI. The laptop display works fine. You test the monitor with another computer and it works. What should you check first?

A user reports that their PC, which has 16 GB of DDR4 RAM, suddenly shows only 8 GB in Windows. The system boots normally. The technician checks the BIOS and sees 16 GB detected. What is the most likely cause of this discrepancy?

A technician is setting up a virtualized test environment where each virtual machine must have a unique MAC address and IP address, and the VMs must be able to communicate with each other and the physical network. The host has only one physical NIC. Which virtual switch configuration should the technician use?

A customer wants to add a dedicated graphics card to their PC for gaming. The motherboard has one PCIe x16 slot, but it is currently occupied by a Wi-Fi card. The customer asks if they can use the PCIe x1 slot for the graphics card. What should the technician advise?

A user reports that their laptop's keyboard types random characters when certain keys are pressed. The laptop has not been dropped or spilled on. What is the most likely hardware issue?

A small business owner wants to access their accounting software from any device, including a tablet and a home computer, without installing the software locally. Which cloud service model should the technician recommend?

A technician is troubleshooting a laptop that shuts down randomly after a few minutes of use. The fan is spinning, and the vents are clear. The CPU temperature reaches 95°C quickly. What is the most likely cause?

A technician is migrating a database from an on-premises server to a cloud platform. The database contains sensitive customer information. The company requires that data be encrypted both at rest and in transit. Which combination of technologies should the technician implement?

A user complains that their PC emits a high-pitched whining noise when under load, and the noise stops when the system is idle. The noise is not coming from the case fans or CPU cooler. What component is most likely failing?

A technician is configuring a dual-monitor setup for a stock trader. The primary monitor is a 27-inch 1440p display connected via DisplayPort, and the secondary is a 24-inch 1080p display connected via HDMI. The user notices that windows dragged to the secondary monitor appear stretched. What is the most likely cause?

A user reports that their laptop can connect to the internet when using a wired connection at home, but cannot connect to any network resources when using Wi-Fi at the office. The office uses DHCP with a scope of 192.168.10.0/24. The laptop's IP configuration shows an address of 169.254.15.22. What is the most likely cause of this issue?

A technician is configuring a tablet for a delivery driver who needs to navigate and take photos of packages. The driver complains the tablet's screen is hard to see in direct sunlight. Which accessory would best address this issue?

A technician is troubleshooting a laptop that cannot connect to a 5 GHz Wi-Fi network, but it connects to 2.4 GHz networks without issue. The laptop's Wi-Fi adapter supports both bands. What is the most likely cause?

A user complains that their smartphone's battery drains quickly even when idle. You run diagnostics and find the battery health is at 82%. The device is two years old. Which hardware servicing action is most appropriate?

A user reports that their Android smartphone's touchscreen is unresponsive after they dropped it in a puddle. The device powers on, but the display shows distorted colors and the touch input does not register at all. What is the most likely cause of this issue?

A customer reports that their network printer is not accessible from any computer on the network. The printer is connected to a switch via Ethernet, and the switch port LED is blinking green. The technician pings the printer's IP address from a computer and gets no reply. What is the most likely cause?

A user complains that their computer randomly shuts down after about 30 minutes of gaming. The case feels warm to the touch, and all fans are spinning. Which component is most likely causing the shutdowns?

A small business wants to connect two separate office buildings that are 150 meters apart, with no existing data cabling between them. They need a reliable, high-speed connection without running new cables. Which type of network should be implemented?

A user wants to upgrade their laptop from a 500GB 5400 RPM HDD to a faster storage solution without increasing power consumption. Which drive type should you recommend?

A technician is upgrading a workstation and notices that the new CPU is not listed in the motherboard's supported CPU list. The motherboard uses an LGA 1200 socket. What is the most likely issue?

A user complains that their external hard drive is not showing up in File Explorer, but it appears in Device Manager as a connected device. What is the most likely issue?

A technician is setting up a thermal printer for a retail point-of-sale system that prints receipts. The printer uses direct thermal technology. After installation, the receipts are completely blank when printed. The printer feeds paper and makes printing sounds. What is the most likely cause?

A user reports that their laptop can see several neighboring Wi-Fi networks but cannot see their own office's SSID, which is a 5 GHz-only network. Other users in the same office can connect without issue. What is the most likely cause?

A technician is replacing a faulty motherboard in a workstation. After installing the new board, the system powers on but there is no display output from the integrated graphics port. The CPU does not have integrated graphics. What should the technician do?

A user complains that their laptop frequently disconnects from the Wi-Fi when they move to the conference room, which is 50 feet from the access point through two walls. The network uses 5 GHz. What is the MOST likely cause of the disconnects?

A user wants to connect a new laptop to a wired network that uses 802.1X authentication. What must be configured on the laptop to ensure successful network access?

A small office is setting up a new VoIP phone system. The IT staff must run new cabling to each desk. Which cable type is most appropriate for connecting VoIP phones to the network?

A technician is troubleshooting a Lenovo ThinkPad that will not turn on. When the power button is pressed, the keyboard lights flash briefly, then nothing. The battery is known to be charged. After removing the battery and holding the power button for 30 seconds, the laptop still does not power on. What should the technician try next?

A customer reports that their laptop can connect to the internet via Wi-Fi but cannot access any network shares on the local file server. Other devices on the same network can access the shares. What is the most likely cause?

A multifunction printer is connected to a network via Ethernet and also has a USB port for direct printing. A user plugs a USB flash drive into the printer to print a PDF, but the printer does not recognize the drive. The drive works on other computers. What is the most likely cause?

A company is adopting a cloud-first strategy and wants to minimize vendor lock-in. They plan to use multiple cloud providers for different workloads. Which cloud deployment model does this describe?

A user reports that their 4K monitor connected via DisplayPort 1.2 only shows a 30Hz refresh rate at native resolution, causing mouse movement to feel laggy. The monitor supports 60Hz at 4K. What is the most likely cause?

A customer reports that their desktop computer, used for video editing, frequently runs out of memory and slows down. They want to upgrade the RAM but are not sure which type is compatible. The motherboard manual lists support for DDR4-3200 and DDR4-2666. The system currently has two 8 GB DDR4-2666 modules installed. What is the best upgrade to maximize performance and capacity?

A technician is troubleshooting a DSL connection that syncs at only 1.5 Mbps when the plan is 10 Mbps. The line is 12,000 feet from the central office. What is the most likely cause?

A technician is deploying an MFP that supports both USB and network connectivity. The office wants all users on the network to be able to print and scan from the device. Which connection method should the technician use?

During a motherboard replacement, you install the new board and connect all cables. When you power on, the system beeps continuously (long beeps). The CPU fan spins, but there is no display. What is the most likely cause?

A technician is troubleshooting a hybrid cloud environment where an on-premises application needs to access a cloud-based database. The connection is intermittent and slow. The technician checks the local network and finds no issues. Which of the following is the most likely cause?

A customer reports that their Bluetooth keyboard intermittently disconnects from their tablet while typing. The tablet and keyboard are less than a meter apart, and no other Bluetooth devices are nearby. Which of the following is the most likely cause of the disconnection?

A company's web server is accessible from the internal network but not from the internet. The server has a static IP of 192.168.1.10. The firewall is configured to allow HTTP and HTTPS traffic. What is the most likely missing configuration?

A virtual machine running a database server experiences frequent disk I/O bottlenecks. The host has multiple physical disks. Which configuration change would most effectively improve performance?

A user reports that their smartphone battery drains quickly and the device feels warm to the touch, especially when using wireless charging. They are using a third-party wireless charger. What is the most likely cause of this issue?

A technician is troubleshooting a network where users can access the internet but cannot connect to a specific internal application server by its hostname. Pinging the server's IP address works. The DNS server is configured correctly for external names. What is the most likely cause?

A customer reports that their desktop PC emits a series of three long beeps and then nothing appears on the screen. The system was working fine yesterday. What is the most likely cause of this issue?

A technician is setting up a network for a university campus that spans several buildings across a 2-kilometer area. The network must support both wired and wireless connections for thousands of users. Which network type best describes this setup?

A small office uses a single router with four switch ports. Users on port 4 cannot access the internet, but they can communicate with each other. Port 4's LED is solid green. What is the most likely cause?

A small business wants to move its on-premises file server to the cloud to reduce hardware maintenance costs. They need full control over the operating system and applications running on the server. Which cloud service model should they choose?

A network administrator needs to determine the exact model and firmware version of a switch located in a remote wiring closet without physically visiting the site. The switch is configured with an IP address on the management VLAN. Which tool can be used to query the switch's SNMP agent for this information?

A customer reports that their new SSD is not detected by the BIOS. The drive is properly connected to the SATA port and power supply. What is the most likely cause of this issue?

A customer reports that their external monitor connected via HDMI flickers intermittently. They have tried a different HDMI cable and a different monitor, but the issue persists. The laptop display works fine. Which component is most likely causing the problem?

A user reports that their computer's clock is consistently off by several minutes, causing authentication failures with the domain. The network uses Active Directory. Which service should be checked first?

During a hardware installation, a technician needs to connect the front panel USB 3.0 ports of a new case to the motherboard. The motherboard has a 20-pin USB 3.0 header. Which cable from the case should be connected to this header?

A technician is setting up a dual-monitor configuration for a financial analyst who needs to see many columns of data side by side. The user wants the sharpest possible text and the highest pixel density. Which type of display panel should the technician recommend?

A technician is installing a new VoIP phone for a user. The user's desk already has a Cat6 wall jack, but the phone requires both network connectivity and a separate power source. The technician has a limited number of power outlets nearby. What is the simplest solution?

A company's IT policy requires that all network traffic from the guest Wi-Fi be isolated from the internal corporate network. The guest network uses a separate SSID and VLAN. Which additional configuration is necessary to ensure complete isolation?

A technician is replacing a cracked screen on a tablet. After removing the digitizer and LCD assembly, they notice the home button flex cable is torn. The tablet still has a physical home button. What should the technician do to ensure the repair is complete and the home button functions?

A technician is replacing the battery in a slim laptop where the battery is glued inside the chassis. After removing the bottom cover, the technician sees the battery is firmly attached with adhesive. What is the safest method to remove the battery without damaging the laptop?

A technician is installing a new graphics card that requires additional power. The PSU has a 6+2 pin PCIe power connector. The graphics card has an 8-pin power input. How should the technician connect the power?

A user reports that a cloud-hosted application is running very slowly during peak hours. The application is hosted on an IaaS platform with a single virtual machine. Which of the following is the most likely cause?

A network administrator is troubleshooting a connectivity issue between two servers. Server A has IP 192.168.10.25/25, and Server B has IP 192.168.10.200/25. Server A can ping its default gateway (192.168.10.1) but cannot ping Server B. What is the most likely cause?

During a network upgrade, a new switch is installed. After connecting all devices, one workstation cannot obtain an IP address via DHCP, while all other workstations on the same switch work fine. What is the first step to troubleshoot this issue?

A technician is configuring a new satellite internet connection for a rural home. After aligning the dish, the modem shows 'online' but the user cannot browse the web. What is the most likely cause?

A technician is troubleshooting a color laser printer that prints documents with a yellow tint on all pages. The yellow toner cartridge is full, and the other colors are at normal levels. Which component is the most likely cause?

A user reports that their multifunction printer is producing prints with faint, streaky text. The printer uses a toner cartridge and has been in service for two years. The technician has already run a cleaning cycle. What should the technician check next?

A technician is called to a site where a large format plotter is producing prints with banding (horizontal lines of varying density). The plotter uses dye-sublimation ink. The technician has already cleaned the printhead and run a nozzle check, but the issue persists. What should the technician check next?

You are troubleshooting a network where users in one department cannot reach a critical server. You need to check if the server's IP address is reachable and measure the round-trip time. Which command-line tool provides this information?

A technician needs to boot a laptop from a USB drive to run a diagnostic tool. The USB is plugged in but the system skips it and boots from the internal SSD. Which UEFI setting is most likely preventing the USB boot?

A user reports that their PC powers on for a second then immediately shuts off. This repeats in a loop. What is the most likely hardware issue?

A technician is installing a new network in a school and must run cables through air handling plenums. What type of cable jacket is required for this installation?

A company's network uses a router with a built-in 4-port switch. The IT manager wants to segment the network into two separate broadcast domains for security. What additional hardware is required?

A network administrator is configuring a new firewall to allow remote employees to securely access internal resources. The requirement is to encrypt all traffic between the remote client and the internal network. Which protocol should be used?

During a network upgrade, a technician needs to connect a legacy printer that only has a USB port to the network. The printer is in a location without a nearby computer. Which device should the technician use to enable network printing?

A user's smartphone can send and receive text messages but cannot access the internet over cellular data. Wi-Fi internet works fine. Which setting is most likely misconfigured?

A company is expanding its office to a new building 5 kilometers away and needs to connect the two LANs so employees can share files and access the same servers as if they were in one location. They want a dedicated, high-speed connection without using the public internet. Which network type should be implemented?

A thermal printer used for shipping labels is producing faint, hard-to-read labels. The printer has plenty of thermal paper loaded. What is the most likely cause?

A user complains that their external USB hard drive is making a clicking sound and is no longer recognized by any computer. What is the most likely cause?

A technician is troubleshooting a VoIP phone that cannot register with the call server. The phone has a valid IP address and can ping the call server by IP. Which protocol is most likely not functioning correctly?

A technician is installing a new thermal printer for a retail point-of-sale system. After connecting the printer and installing the driver, the printer prints garbled characters and random symbols. What is the most likely cause?

A technician is called to a home where the customer reports that their cable internet works fine, but the TV service has pixelated channels. The technician suspects a signal issue. What is the most appropriate tool to measure the signal strength and quality on the coaxial line?

A technician is setting up a small office network with a router, a switch, and a wireless access point. The router has only one LAN port. The technician needs to connect the switch and the WAP to the router, but the switch has no uplink port. Which hardware component should the technician use to connect both devices to the router?

A user reports that their computer is running very slowly and they hear a repetitive clicking sound from the case. The technician checks the SMART status of the primary hard drive and sees a 'Reallocated Sectors Count' value that is critically high. What should the technician do next?

A technician is deploying tablets for use in a warehouse where workers wear gloves. The tablets need to be used for scanning barcodes and entering data. Which accessory is most critical for this environment?

A user has a 27-inch 1440p monitor connected via DisplayPort. They report that text appears slightly blurry and images look less sharp than expected. The monitor's native resolution is set correctly in Windows. What should you check first?

During a desktop build, you install a new M.2 NVMe SSD into the M.2 slot. When you power on the system, the BIOS does not detect the drive. The SSD is known to be working. What is the most likely motherboard-related cause?

A user reports that they cannot access a website hosted on a remote server. The technician finds that the firewall allows HTTP and HTTPS traffic, but the website uses a non-standard port. The user's browser shows 'connection refused'. Which tool can the technician use to verify if the remote port is open?

A technician is tasked with connecting a legacy parallel port printer to a modern motherboard that lacks a parallel port header. The motherboard has an LPT header (25-pin) but it is not populated with a bracket. What is the best way to add a parallel port?

A technician is setting up a new multifunction printer for a department. The device supports duplex printing, but the driver installation wizard does not show the duplex option. Users need to print on both sides of the paper. What should the technician do first?

A customer reports that their new all-in-one printer can scan and copy locally, but they cannot send scanned documents to their email address. The printer is connected to the office network and can ping other devices. Which protocol is most likely misconfigured on the printer?

A technician is replacing a power supply in a server that has been experiencing random lockups. The old PSU is an 80+ Bronze rated 650W unit. The technician selects an 80+ Gold rated 650W unit from the same brand. What is the primary benefit of this upgrade?

A customer complains that their external USB hard drive is not recognized when plugged into any port on their laptop. The drive spins up and its LED lights up. The drive works fine on another computer. What is the most likely issue?

A customer reports that their laptop can connect to the internet at home via Wi-Fi, but at a coffee shop it cannot connect to the guest network. They have not changed any settings. Which network type is most likely causing this issue?

A technician is troubleshooting a smartphone that cannot connect to any Wi-Fi network. The technician has already verified that the device's Wi-Fi adapter is enabled and that other devices can connect to the same networks. What should the technician check next?

A user reports that their laptop screen flickers intermittently, especially when the lid is moved. The flickering stops when an external monitor is connected. What is the most likely cause?

A user's smartphone intermittently disconnects from a known Wi-Fi network when they move to a different room. The network uses a single access point. What is the most likely cause?

A user reports that their cloud-based application is running slowly, and the IT team discovers that the application is hosted in a different geographic region than the user. Which cloud concept is most directly affecting performance?

A technician is deploying 50 company-owned Android tablets for field workers. The tablets must only run a single custom business app and prevent users from accessing any other apps or settings. Which configuration method should the technician use?

A technician is troubleshooting a laptop that cannot connect to a 5 GHz Wi-Fi network, but it connects to 2.4 GHz networks without issue. The laptop supports dual-band Wi-Fi. What is the most likely cause?

A technician is troubleshooting a network drop that was working yesterday but now has no link light at the switch. The cable run is 80 meters and passes through a conduit. Which tool should be used first to isolate the problem?

You are upgrading a customer's gaming PC to support faster memory. The motherboard supports DDR4-3200, but after installing two 8GB DDR4-3200 modules, the system only runs at 2133 MHz. What is the most likely reason?

A technician is setting up a mobile workstation for a graphic designer who uses a laptop with a USB-C port that supports Thunderbolt 3. The designer needs to connect two 4K monitors, a wired Ethernet connection, and charge the laptop simultaneously. Which accessory should the technician choose?

A technician is troubleshooting an impact printer that is producing faint characters on multipart forms. The ribbon is new, and the print head is clean. The forms are properly aligned. Which adjustment should be made?

A technician is configuring a network for a new branch office. The branch has 50 users and needs to access resources at the main office via a secure tunnel over the internet. Which service is required to establish this connection?

A user reports that their desktop PC emits a series of short beeps and fails to boot. The monitor shows no display, and the keyboard and mouse LEDs are off. What is the most likely cause?

A technician is configuring a cloud-based backup solution for a client's critical data. The client requires that data be stored in a way that allows quick recovery of individual files from any point in the last 30 days. Which cloud storage model is most appropriate?

A user complains that a virtual machine running on a laptop shuts down unexpectedly when the laptop is unplugged from power. The host has power management settings set to 'Balanced'. What is the most likely cause?

A small office has a single public IP address and uses a router to provide internet access to 20 devices. Users report that some websites load slowly or time out, while others work fine. The router's NAT table shows many entries. Which protocol is most likely being exhausted, causing these intermittent issues?

A user reports that their VoIP phone works but the connected PC cannot access the network. The phone is connected to the wall jack, and the PC is connected to the phone's passthrough port. What is the most likely cause?

A customer complains that their VoIP phone intermittently drops calls. A technician checks the network and finds high latency and jitter during peak hours. Which network service should be configured to prioritize VoIP traffic?

A technician is troubleshooting a server that uses a RAID 6 array with six 4 TB HDDs. One drive fails, and after replacement, the rebuild process is taking much longer than expected. The array is still online. What is the most likely reason for the slow rebuild?

A company needs to deploy a virtualized environment where each VM must be isolated from others for security reasons, but all VMs share the same physical network. Which virtual networking configuration should be used?

A user reports that they can receive emails but cannot send any. The email client is configured with SMTP on port 25. The IT team confirms that port 25 is blocked by the ISP. Which alternative port should be used for SMTP submission?

A user reports that their external monitor connected to a laptop via HDMI flickers intermittently. The laptop's built-in display works fine. You have tried a different HDMI cable and a different monitor, but the flickering persists. What should you check next?

A customer reports that their laptop can connect to the internet via a wired connection but cannot access any network shares or printers by hostname. They can ping the IP address of the file server. Which network service is most likely misconfigured?

During a routine hardware upgrade, you need to replace a power supply in a desktop that has a non-modular PSU. After disconnecting all cables, you notice the old PSU has a 20+4 pin main connector, but the new PSU has a 24-pin main connector. The motherboard has a 24-pin socket. What should you do?

A user is setting up a new tablet and wants to share its internet connection with a laptop that has no cellular capability. The tablet has a cellular data plan. Which configuration should the user enable on the tablet?

A technician is troubleshooting a desktop that fails to boot and displays 'No bootable device' after a power outage. The system has a single SATA SSD for the OS and a separate HDD for data. The BIOS detects both drives. What should the technician check first?

A company plans to migrate a physical server running a legacy application to a virtual machine to reduce hardware costs. The application requires direct access to a proprietary PCIe card installed in the physical server. Which virtualization feature must the hypervisor support to allow the VM to use this card?

A customer brings in a smartphone with a cracked glass digitizer that still responds to touch, but the LCD underneath is intact. They want the cheapest repair that restores full functionality. Which component should you replace?

A small office has a multifunction printer that supports duplex printing. Users complain that when they select 'Print on Both Sides' from their application, the printer still prints single-sided. The printer driver is installed correctly. What should you check first?

A technician is deploying a new network in a warehouse and needs to measure the length of a spool of Cat6a cable before installation to ensure it does not exceed the 100-meter segment limit. Which tool should be used?

A technician is configuring a RAID 5 array with three 2 TB hard drives for a small office server. After installation, the array is not recognized by the RAID controller. The drives spin up and are detected individually. What is the most likely oversight?

A user reports that their computer will not boot and displays an 'Operating System Not Found' error. They recently installed a new SATA SSD and connected it to the motherboard. What is the most likely cause?

A technician is setting up a new branch office and needs to assign IPs to 30 devices. The ISP provided a public IP block of 203.0.113.0/28. The technician decides to use private IPs internally and NAT. Which of the following is the most appropriate private IP range for this network?

A user reports that a VM running Linux suddenly displays a 'Kernel Panic' error after the technician applied a snapshot and then reverted to it. The snapshot was taken while the VM was running. What is the most likely cause of the kernel panic?

A customer reports that their new laptop cannot connect to the internet at a coffee shop, but their smartphone works fine. The technician checks the laptop's network settings and sees the Wi-Fi adapter is enabled and connected to the correct SSID. Which protocol is most likely not configured correctly on the laptop?

A customer wants to connect a laptop to a 4K TV for a presentation. The laptop has an HDMI 1.4 port, and the TV supports HDMI 2.0. What is the maximum resolution and refresh rate the customer can expect?

A user reports that their computer does not power on at all. The technician verifies the power cord is connected and the wall outlet works. When the PSU is turned on, no fans spin and no LEDs light up. What should the technician check first?

A company’s web server is accessible from the internal network but not from the internet. The server has a static IP of 192.168.1.10, and the router’s public IP is 203.0.113.50. What configuration is most likely missing?

You are deploying 50 tablets for a school and need to secure them in kiosk mode so students can only access a specific learning app. Which hardware servicing step is essential before configuring the software?

A technician is configuring a small office network and needs to assign a static IP address to a printer. The technician pings the intended IP address and gets no reply, but the printer still fails to communicate after configuration. Which tool should be used to verify that no other device on the network is using that IP address?

A network administrator is troubleshooting intermittent connectivity issues on a fiber optic link between two buildings. The link works but has occasional errors. The technician inspects the fiber and finds that the connectors are dirty. After cleaning them, the issue persists. What should the technician check next?

A customer reports that their Android phone's email app crashes whenever they try to open an attachment from a work email. The app worked fine last week. What is the most likely cause of this issue?

A customer reports that their desktop PC randomly shuts down when playing graphics-intensive games, but runs fine during web browsing. The power supply is a 450W unit. What is the most likely cause of the issue?

A small office has a network with a single switch and a wireless access point (WAP). Users on the wired network can access the internet, but wireless users cannot. The WAP shows a solid green power LED and a blinking amber activity LED. What is the most likely cause?

A user reports that their Android tablet frequently crashes when using a specific note-taking app, but other apps work fine. They have already cleared the app cache and data. What should you do next to resolve the issue?

A customer complains that their external USB 3.0 hard drive is only transferring files at USB 2.0 speeds (about 30-40 MB/s). They have confirmed the drive supports USB 3.0. What is the most likely cause?

A user wants to securely transfer files to a remote server using a command-line tool. Which port is the default for SFTP (SSH File Transfer Protocol)?

A customer reports that their computer with a RAID 5 array is running very slowly during file transfers. The system uses three 1 TB SATA hard drives. The technician runs a diagnostic and finds that one drive has a high number of reallocated sectors. What is the most likely cause of the performance issue?

A technician is deploying a wireless network in a large warehouse. The warehouse has metal shelving and concrete walls. The technician needs to ensure coverage throughout the area. Which antenna type should be used for the access points to maximize coverage in this environment?

A technician is troubleshooting a desktop PC that displays a blank screen on boot. The monitor's power LED is on (green), but no image appears. The PC beeps once during startup, and the hard drive activity light flashes. Which component is most likely faulty?

A user complains that their laser printer is printing pages with a vertical black line down the left side of every page. The line appears consistently in the same position regardless of the document printed. What is the most likely cause?

A small office uses a single router with a built-in DHCP server. The office has 15 devices that need IP addresses. The router's default subnet mask is 255.255.255.0. How many usable IP addresses are available for devices on this subnet?

A user reports that their NFC-enabled smartphone cannot make contactless payments at a terminal that works with other phones. The user has a thick wallet case with metal credit cards. What is the most likely issue?

A technician is troubleshooting a desktop that powers on but displays nothing on the monitor. The monitor is on and connected via HDMI. The technician hears one short beep from the motherboard speaker. What should the technician do next?

A technician is setting up a new network printer for a department. The printer needs to be accessible to all users on the same subnet without a dedicated print server. Which configuration method should the technician use?

A technician is troubleshooting a laptop that has a blank screen after the user closed the lid and then reopened it. The laptop's power LED is on, and the fan is spinning. Pressing keys does not wake the display. What should the technician do first?

A technician is troubleshooting a desktop that beeps three times repeatedly and shows a blank screen upon power-on. The system has a discrete GPU installed and two sticks of RAM. What is the most likely cause indicated by the beep code?

A technician is replacing a failed hard drive in a server. The new drive has a SATA III connector, but the server's backplane only supports SATA II. What will be the result of using this drive?

A technician is configuring a new router for a branch office. The ISP provides a public IP of 203.0.113.10/30 for the WAN interface. How many usable IP addresses does the technician have for devices on the WAN link?

A technician needs to connect a new router to a cable modem using an Ethernet cable. The modem has an RJ45 port, and the router has an RJ45 WAN port. Which cable type should be used for this connection?

A company's internal website is accessible by IP address but not by its hostname. The website is hosted on a server with a static IP. Which service is most likely misconfigured?

A technician is troubleshooting a desktop PC that will not power on. The power supply unit (PSU) has a 24-pin main connector and a 4+4 pin CPU connector. The motherboard has a 24-pin ATX connector and an 8-pin EPS connector. How should the technician connect the CPU power?

A user's laptop screen has a small crack in the corner, and the display shows lines and discoloration in that area. The rest of the screen works. What is the most cost-effective solution?

You are configuring a dual-monitor setup for a financial analyst. After connecting both monitors, one display shows a distorted, stretched image while the other works perfectly. Both monitors are identical 1920x1080 models. What is the most efficient troubleshooting step?

A user reports that their Android tablet's screen flickers when using a specific video streaming app, but the screen is stable in other apps and on the home screen. What hardware component is most likely at fault?

A technician is configuring a workstation for a video editing application that requires 64 GB of RAM. The motherboard has four slots and supports up to 128 GB. The technician has four 16 GB DDR4-3200 modules. What is the most important consideration when installing these modules?

A small office has an inkjet printer that intermittently prints blank pages. The printer has been recently refilled with ink, and the printhead alignment test prints correctly. What is the most likely cause of the blank pages?

A security audit reveals that an internal file server is listening on multiple ports, including 137, 138, 139, and 445. The auditor recommends disabling older protocols. Which port is associated with SMB over TCP/IP directly (without NetBIOS)?

A user reports that their RAID 5 array with three 2 TB drives is missing one drive in the RAID configuration utility. The technician finds that the missing drive is not detected by the system BIOS. What should the technician do next?

A home user complains that their internet is extremely slow during peak evening hours, but speed tests show fast results late at night. They have a cable modem connection. What is the most likely cause of this issue?

A company uses a cloud storage service for backup. The technician needs to ensure that if the primary cloud region goes down, the backups are still accessible from another geographic location. Which cloud characteristic should be configured?

A client reports that their new 802.11ac laptop cannot connect to the office Wi-Fi, while older 802.11n devices work fine. The access point is a dual-band model. Which of the following is the MOST likely reason?

A small business owner wants to add a second internal hard drive to a desktop computer for nightly backups. The existing drive is a 2.5-inch SATA SSD. The motherboard has one free SATA port and one free power connector from the PSU. Which type of drive should the technician install to maximize compatibility and reliability?

A company deploys a new VoIP system. Users report that calls drop frequently. The network uses a single flat subnet with no QoS configured. The technician monitors traffic and sees high bandwidth utilization during peak hours. What is the most effective solution to improve call quality?

A technician is setting up a virtual machine for a developer who needs to test software across multiple OS versions. The VM must have direct access to a USB dongle for licensing. Which VM configuration setting must be enabled?

A technician is troubleshooting an Android phone that fails to connect to a corporate Wi-Fi network using WPA2-Enterprise with PEAP. The phone connects to other Wi-Fi networks without issue. What is the most likely cause?

A technician is tasked with deploying a virtualized environment for a small office using a single server. The server has 64 GB RAM, two 6-core CPUs, and a RAID 10 array. The technician needs to run four VMs: a domain controller (4 GB), a file server (8 GB), a web server (4 GB), and a database server (16 GB). After deployment, the database server is performing poorly. The technician notices that the hypervisor has allocated 2 virtual CPUs to each VM. Which of the following is the most likely cause of the database server’s poor performance?

A technician is troubleshooting a network where several users cannot access the internet, but they can communicate with each other. The network uses a router with IP 10.0.0.1 and a subnet mask of 255.255.255.0. All computers have IPs in the 10.0.0.0/24 range. What is the most likely cause?

A technician is troubleshooting a laptop that will not charge via its USB-C port. The laptop uses a USB-C power adapter that works with other devices. The technician tests the port with a known-good USB-C flash drive, and it is not detected. What is the most likely issue?

A user complains that their wireless mouse and keyboard stop working when they move more than 10 feet away from the computer. The devices use a USB dongle. Which network type is being used for these peripherals?

A sales representative reports that their tablet's screen becomes unresponsive when they try to use it with a capacitive stylus. They need to annotate documents during client meetings. Which accessory should you recommend to resolve this issue?

A server administrator reports that a critical server is unreachable from the network. The technician can ping the server's IP address from the local subnet but not from a remote subnet. Which command-line tool should be used to identify where packets are being dropped along the path?

A technician is setting up a new printer on a network. The printer has a static IP address of 192.168.1.50, but users cannot ping it from their workstations. The workstations are on the 192.168.1.0/24 subnet. What should the technician check first?

A customer reports that their internet connection drops frequently during rainstorms. They have a DSL line and a standard modem. Which factor most likely causes this issue?

A user wants to use a portable SSD with their tablet for video editing. The tablet has a USB-C port that supports USB 3.1 Gen 2. They need to transfer large files quickly and also charge the tablet simultaneously. Which accessory should they use?

A technician is configuring an MFP for a law firm that requires secure printing. Users must enter a PIN at the device to release their print jobs. The MFP supports hard drive encryption and secure print release. Which feature should the technician enable to ensure print jobs are not stored unencrypted on the MFP's hard drive?

A technician is deploying several Android tablets for use as point-of-sale (POS) terminals. The tablets must run a custom POS app in kiosk mode, preventing users from accessing other apps or settings. Which configuration method should the technician use?

A technician is setting up internet for a rural home that is 5 miles from the nearest town. The home has no cable TV or phone line. Which internet connection type is most feasible?

A customer reports that their new desktop PC runs for exactly 30 minutes and then shuts down. After the shutdown, the system won't power back on for several minutes. What is the most likely BIOS/UEFI-related cause of this behavior?

A network administrator is troubleshooting a 1000BASE-T connection that is only running at 100 Mbps. The cable is Cat5e and the switch supports Gigabit. The link light is green but the speed is capped. What is the most likely cause?

A technician is setting up a new file server that needs to be accessible to employees both from the local network and remotely over the internet. The server will host shared folders. Which protocol should the technician ensure is properly configured and secured on the server for file access?

A customer says their laptop battery no longer charges. The laptop works when plugged into AC power, but the battery icon shows '0% available (plugged in)'. What is the most likely cause?

A company is deploying a new branch office in a location where no wired internet is available. They need a reliable connection with moderate speed and low latency for VoIP and video conferencing. Which technology should they consider?

A technician is configuring a new database server that needs to accept remote connections from client applications using the default port for MySQL. Which port should be opened in the firewall?

A user reports that their Android phone's battery drains quickly after installing a new social media app. The phone worked fine before. What is the most efficient first troubleshooting step?

A technician is configuring a wireless network for a high-density environment such as a conference hall. The network must support hundreds of simultaneous connections with minimal interference. Which configuration will best achieve this?

A user reports that their laptop can connect to the corporate Wi-Fi but cannot access any network resources. The technician checks the IP configuration and sees an IP address of 192.168.1.105 with a subnet mask of 255.255.255.0 and a default gateway of 192.168.1.1. The technician pings the gateway successfully but cannot ping a server at 192.168.2.10. What is the most likely issue?

A technician is configuring a company-issued Android tablet for a field worker who needs to use a VPN to access internal resources. The tablet connects to the internet via cellular data. After setting up the VPN, the user cannot access any internal websites. What should the technician check first?

A user reports that their laptop's touchpad is not working properly. The cursor jumps around randomly when they try to use the touchpad. An external mouse works fine. Which of the following should the technician do first?

A company wants to connect two office buildings that are 2 miles apart in the same city to share a high-speed internet connection and internal resources. Fiber optic cable is not an option due to cost. Which network type and technology would be most appropriate?

A technician is configuring a new server and needs to install ECC (Error-Correcting Code) RAM. The motherboard supports both ECC and non-ECC DDR4 memory. The technician installs ECC RAM, but the system boots and reports that ECC functionality is disabled. What is the most likely reason for this?

A company is upgrading its network to support 10 Gbps connections between server racks. The distance between racks is 25 meters. Which cabling standard is most appropriate for this upgrade?

A technician is deploying a fleet of tablets that must connect to a corporate network using 802.1X authentication with certificates. After configuring the Wi-Fi profile, some tablets fail to connect. The technician verifies the SSID and security settings are correct. What is the most likely missing configuration?

A technician is setting up a new office network with 50 devices. The network must support growth up to 100 devices. The technician chooses a subnet mask of 255.255.255.0. How many usable host addresses does this subnet provide?

A user wants to connect a laptop to a 4K projector for a presentation. The laptop has a USB-C port that supports DisplayPort Alt Mode, and the projector has an HDMI input. Which cable or adapter is required?

A technician is configuring a small office network with 15 computers and a single router. The router's WAN port is connected to a cable modem, and the LAN port is connected to a switch. All computers are connected to the switch. The technician assigns the router's LAN interface the IP 192.168.0.1/24. What should be the default gateway setting on each computer?

A client in a rural area has a cellular hotspot for internet but experiences frequent slowdowns. They want a more stable option that does not rely on wired infrastructure. Which technology should a technician recommend?

A technician is installing a new LCD monitor for a user who does photo editing. The user complains that colors appear washed out compared to their old CRT monitor. What should the technician adjust first?

A customer reports that their external monitor connected via HDMI to a laptop shows a 'No Signal' message, even though the laptop screen works fine. The monitor has been tested with another device and works. What should you check first?

During a system boot, a user sees an error message: 'CMOS checksum error - Defaults loaded.' The system then boots normally but loses the date and time settings after power-off. What is the most likely hardware failure?

A user reports that their computer connected to a wall jack works fine, but when they move the computer to a different desk and plug into a different wall jack, there is no network connectivity. The switch port shows no link light. What is the most likely cause?

A technician is troubleshooting a DHCP issue where clients are not receiving IP addresses. Which port must be open on the firewall for DHCP server communication?

A technician is troubleshooting a customer's smart home setup where the thermostat, lights, and door lock are controlled via a smartphone app. The devices communicate directly with each other without a central hub, but the range is limited to about 30 meters. Which network type is being used?

A customer reports that their desktop PC will not power on at all. The power supply fan does not spin, and no LEDs light up. You have verified the wall outlet is working. Which motherboard component is most likely preventing the system from starting?

A user complains that their desktop PC loses network connectivity intermittently, especially when the printer on the same desk starts printing. What is the most likely cause?

A technician is troubleshooting a system that experiences random lockups and blue screens. The technician suspects a CPU issue but has already run a stress test without errors. Which diagnostic step should the technician perform next to isolate the problem?

A technician is deploying a new Android app across several company tablets. The app requires access to the device's camera to scan barcodes. During testing, the app fails to open the camera on one tablet but works on others. What is the most likely cause?

A network administrator wants to ensure that all devices on a subnet automatically receive IP addresses from a specific range, and that the lease time is set to 8 hours. Which configuration file or service should be modified?

A company is setting up a new branch office with 50 workstations and needs to connect them to the existing corporate network across a city. The connection must be dedicated and provide consistent bandwidth. Which type of WAN hardware should be installed at the branch office?

An IT manager is comparing cable broadband and fiber-optic for a new office. They need the lowest possible latency for real-time financial trading applications. Which connection type should they choose, and why?

A small business wants to run three different operating systems on a single physical server to save space and power. Each OS must have its own dedicated CPU cores, RAM, and storage, and the hypervisor must run directly on the hardware without a host OS. Which type of hypervisor should be deployed?

A technician is configuring a new workstation for a secure environment. The policy requires that only signed operating systems can boot. Which UEFI feature should be enabled?

A user wants to connect their laptop to a 4K external monitor for a presentation. The laptop has USB-C ports, and the monitor supports HDMI and DisplayPort. Which adapter or cable should the technician recommend for the best video quality?

A technician is setting up a virtual lab on a laptop with 8 GB RAM and a dual-core CPU. The technician creates two VMs: one with 4 GB RAM and one with 2 GB RAM. The host OS is Windows 10. When both VMs are running, the laptop becomes unresponsive and the VMs are extremely slow. The technician checks resource monitor and sees that the host is using 95% of RAM. What should the technician do to improve performance without purchasing new hardware?

A user complains that their external monitor flickers intermittently. The monitor is connected via a DVI cable to a graphics card that has both DVI-I and DVI-D ports. Which of the following is the most likely cause of the flickering?

A technician is called to a warehouse where a newly installed IP camera shows 'No Signal' on the NVR. The camera is connected via a 100-meter Cat6 cable to a PoE switch. The switch port LED is off. What is the most likely cause?

A technician is setting up a small office with five computers that need to share files and a printer. The office is in a single room, and no internet access is required yet. Which network type should be created?

A user's all-in-one PC has a touchscreen that is not responding correctly. The technician calibrates the touchscreen, but the issue persists. The technician then notices that the screen is slightly misaligned with the bezel. What is the most likely cause?

A technician is setting up a network printer that supports both standard and secure printing. Which port should be configured for secure IPP printing?

A technician is configuring a multifunction printer for a legal office that requires all scanned documents to be saved in a searchable PDF format. The printer supports OCR. Which setting must be enabled during the scan job?

A company's cloud-based virtual desktop infrastructure (VDI) is experiencing slow logins for users in a remote office. The network latency between the remote office and the cloud data center is 150 ms. What is the most effective solution to improve login performance?

A user reports that their desktop computer connected to the network via a 10-meter Cat6 cable keeps losing connectivity when they move their chair. The cable runs under the desk and is occasionally stepped on. What is the most likely issue?

A customer wants to switch from cable internet to a fixed wireless ISP (WISP) to reduce costs. What is a critical requirement for the WISP installation?

A customer brings in a desktop PC with a 4K monitor that displays a blurry image at native resolution. The monitor's settings show 3840x2160 resolution, but text is hard to read. What is the most likely issue?

A technician is servicing a tablet that will not power on. The technician has confirmed the battery is charged by testing it with a multimeter (voltage within spec). The power button feels normal when pressed. What is the most likely hardware component that has failed, and how should it be addressed?

A technician is configuring a server that requires maximum memory bandwidth for virtual machines. The motherboard has four memory slots and supports dual-channel architecture. The technician installs two 16 GB DIMMs. Which configuration will provide the best performance?

A technician is called to a data center where a server with a RAID 6 array of six 8 TB drives has experienced a double drive failure. The technician replaces both failed drives. After the rebuild, the array reports as healthy but the performance is extremely slow during normal operations. What is the most likely cause?

A technician is setting up a new tablet for a sales team member who travels frequently. The user needs to access the internet via cellular data and also connect to a Bluetooth headset. What should the technician configure first?

A small business has an inkjet printer that prints blank pages even though the ink cartridges are full. The printer passes the nozzle check pattern test. What should be done next?

A technician is configuring a company-issued Android phone for a remote employee. The employee needs to access corporate email via the Gmail app and use a VPN for secure connections. After setup, the user cannot send emails from the Gmail app, but can receive them. What should the technician check first?

A user complains that their computer, which uses a RAID 1 mirror with two identical HDDs, is running very slowly. The OS is installed on the array. The technician checks and finds that one drive has a high number of bad sectors. What should be done to restore performance and data safety?

A technician is configuring a new wireless network for a small business. The owner wants to ensure that only company-issued laptops can connect, and that data is encrypted. The laptops support WPA2-Enterprise. Which authentication method should be used?

A technician is setting up a new server that must always have the same IP address on a network using DHCP. The network administrator wants to avoid manually configuring the server's IP to prevent misconfiguration. Which method should be used to ensure the server receives the same IP from the DHCP server?

A user's cable internet goes out completely after a power outage. The modem's power light is on, but the 'online' light is blinking. What is the most likely issue?

A user's multifunction printer is displaying a 'Replace Fuser' error message, but the technician has a replacement fuser available. After installing the new fuser, the error persists. What is the most likely cause?

A user reports that their email client cannot send messages but can receive them. The technician verifies that the email server is reachable and that the user's credentials are correct. Which protocol is most likely misconfigured in the email client?

A technician is tasked with upgrading the RAM in a desktop motherboard that has four DIMM slots. The existing configuration has two 4GB sticks in slots A1 and B1. The user wants to add two more 4GB sticks for a total of 16GB. After installing the new sticks in slots A2 and B2, the system boots but only shows 8GB of RAM. What is the most likely cause?

A technician is configuring a network printer for secure printing using IPsec. After enabling IPsec on the printer and the print server, print jobs fail to reach the printer. The technician can ping the printer from the server. Which protocol negotiation step is most likely failing?

A small office has several desktop PCs that intermittently fail to power on in the morning. The issue is more common on humid days. After checking the wall outlets, you find they are properly grounded. What is the most likely cause?

A company is moving to a new building that has no existing internet infrastructure. They need the highest possible download speeds with low latency for cloud applications. Which connection type should they choose?

A technician is upgrading a workstation by adding a second high-end GPU. The current power supply has a single +12V rail rated at 40A and two 6+2 pin PCIe power cables. What is the most important factor to check before proceeding?

A user reports that after installing a new app on their Android phone, the device has become noticeably slower and the battery drains faster. What is the most likely cause?

A user reports that their external monitor connected via HDMI displays a 'No Signal' message, though the monitor power LED is lit. The laptop's built-in display works fine. Which of the following should be checked FIRST?

A company has two branch offices in different cities. They need to connect their LANs so employees can access resources at both locations securely over the internet. Which network type should be used?

A technician is setting up a mobile point-of-sale system using a tablet and a portable receipt printer. The printer supports both Bluetooth and NFC. Which connection method should the technician use for reliable, low-latency printing?

A technician is setting up a new thermal printer for a retail point-of-sale system. The printer uses direct thermal technology and will print receipts. After connecting the printer via USB and installing the driver, the test page prints, but the text is very faint. What is the most likely cause?

A technician is deploying a new laser printer in a medical office. After installation, the printer prints a test page correctly, but when users print from their workstations, the output is garbled with random characters. What is the most likely cause?

A customer wants to use a 34-inch ultrawide monitor (3440x1440) with their desktop PC. The PC has an older GPU with a DVI-D dual-link port and an HDMI 1.4 port. Which connection should the technician recommend for the best image quality?

A user reports that their computer cannot access any network resources, but the link light on the NIC is solid. The technician suspects a faulty cable. Which tool can quickly test the cable's continuity and detect a broken wire?

A technician is tasked with securing a workstation that will be used in a public kiosk. The requirement is that the system must only boot from the internal SSD and must prevent booting from USB drives or optical media. Which UEFI security feature should be configured?

During a network upgrade, a technician needs to allow remote desktop connections to Windows workstations from the internal network. Which port must be opened in the firewall?

A customer wants to set up a home network that supports the fastest possible speeds for streaming 4K video and gaming, with support for multiple devices. They have a cable modem that supports up to 1 Gbps. Which wireless standard should you recommend for the new router?

A user reports that their smartphone's battery drains very quickly, even when the phone is idle. The phone is less than a year old. Which of the following is the most likely cause of this issue?

A law office wants to enable secure printing on their multifunction device so that users must enter a PIN at the printer before their documents print. The printer supports this feature. What must be configured to make this work?

A small business uses a router with a default IP of 192.168.1.1. The owner wants to set up a new printer with a static IP of 192.168.1.50. After configuring the printer, it cannot be accessed from any computer on the network. All computers are set to obtain IP addresses automatically. What is the most likely problem?

A technician is troubleshooting a smartwatch that will not sync with a smartphone via Bluetooth. The smartwatch pairs but data syncs only intermittently. The smartphone is an Android device with battery optimization enabled for the companion app. What is the most likely cause?

A network administrator is deploying a new wireless network in a large office building. They need to ensure seamless roaming for users moving between floors. The building has concrete floors and metal studs. Which hardware configuration will best support this requirement?

A user reports that their cloud storage files are not syncing to their laptop. The internet connection is working, and other cloud services are accessible. Which of the following is the most likely cause?

A company deploys a new VoIP phone system. Users report that calls are choppy and sometimes drop. The network uses a single flat subnet with no QoS. What is the most likely cause?

A user reports that their computer will not boot and the motherboard's diagnostic LEDs show a CPU error. You reseat the CPU and check for bent pins, but the error persists. Which of the following should you check next?

A technician is troubleshooting a server that uses a hardware RAID controller with four SSDs in RAID 10. The server randomly freezes and the event log shows 'Lost communication with drive' errors. The drives pass SMART tests. What is the most likely cause?

A technician is configuring a new workstation and needs to ensure the system can address more than 4 GB of RAM. The motherboard supports 16 GB of DDR4 memory. Which UEFI setting must be verified to ensure the OS can use all installed memory?

A customer complains that their iOS device's calendar app no longer syncs with their work Exchange account after a recent iOS update. Other email and contacts sync correctly. What is the most likely cause?

A user's workstation has intermittent connectivity issues. You suspect the Ethernet cable might be damaged or improperly terminated. You need to test the cable for continuity, shorts, and correct pinout. Which tool should you use, and what is a key feature of this tool?

A small office manager wants to upgrade the RAM in several identical workstations from 8 GB to 16 GB. The current modules are DDR3-1600. The company has a box of unused DDR3-1333 modules from an older system. Can they use these modules to upgrade the workstations?

A user reports that their laptop's battery life has dropped significantly over the past month. The battery now lasts only 30 minutes on a full charge. The technician runs a battery report and finds that the design capacity is 50,000 mWh, but the full charge capacity is only 12,000 mWh. What is the most likely conclusion?

A customer reports that their desktop PC will not power on at all. The power supply fan does not spin, and no LEDs are lit. You have verified the power cord is good and the outlet has power. Which motherboard component should you check first?

A technician is troubleshooting a server that uses a RAID 5 array with three 1TB HDDs. One drive fails, and the technician replaces it with a new 1TB HDD. After rebuilding, the array reports only 1.8TB of usable space. What is the most likely cause?

A technician needs to install a CPU that supports both DDR4 and DDR5 memory on a new motherboard. The motherboard manual lists support for only DDR5. Which of the following is the best course of action?

A technician is troubleshooting a desktop that fails to boot after the user installed a new M.2 NVMe SSD. The computer powers on, but the screen remains black and no BIOS splash screen appears. What is the most likely cause of this issue?

A user's laptop screen flickers intermittently, but the external monitor works fine. What is the most likely cause?

A technician is building a workstation for video editing and needs to configure a RAID array for maximum performance without redundancy. The motherboard supports RAID 0, 1, 5, and 10. Which RAID level should the technician choose?

A user wants to connect their smartphone to a hotel TV to stream a presentation during a conference. The TV has only an HDMI port and no wireless capabilities. Which accessory is most appropriate for this task?

A technician is tasked with upgrading a desktop computer that has a 500GB SATA SSD and a 2TB SATA HDD. The motherboard has one M.2 slot (PCIe 3.0 x4) and four SATA III ports. The user wants faster boot times and application loading. Which upgrade will provide the most noticeable performance improvement?

A user complains that their tablet's battery drains very quickly, even when not in use. The device is one year old and was working normally until last week. Which hardware component is most likely failing?

A user reports that their laser printer is producing pages with vertical black streaks. The streaks appear in the same position on every page. What is the most likely cause?

A company is setting up a guest wireless network in a conference room. They want to ensure that guests can access the internet but cannot communicate with internal corporate devices. The network uses a single router and a switch. Which configuration on the router will best achieve this?

A user's projector displays a very dim image, even with the brightness setting at maximum. The lamp hour counter shows 1500 hours, and the projector is three years old. What is the most likely cause?

A company is migrating its on-premises email server to a cloud service. Employees must retain all existing emails and folders. Which cloud deployment model best fits this requirement?

A laptop's built-in webcam is not recognized by any application. You have checked Device Manager and the camera is not listed. The webcam ribbon cable appears intact. Which component should you suspect next?

A customer reports that their desktop PC randomly shuts down when playing a graphically intensive game. The system has a 500W power supply, a high-end GPU, and a CPU with a 125W TDP. What is the most likely cause of the shutdowns?

A company uses a SaaS CRM application and wants to ensure that if the internet connection fails, employees can still access customer data. Which of the following is the best solution?

After installing a new graphics card, a user's display shows distorted colors and random artifacts during boot. The system POSTs successfully. Which of the following is the most likely cause?

A technician is configuring a new all-in-one PC for a graphic designer. The designer needs to calibrate the display for accurate color reproduction. Which technology should the technician ensure the monitor supports?

A customer reports that their desktop computer randomly shuts down when they run video editing software. The system has a high-end GPU and 32 GB of RAM. During troubleshooting, you notice the CPU temperature quickly rises to 95°C under load. Which of the following is the most likely cause?

A small business is moving to a new office and wants to connect all their computers, printers, and a server. They have a limited budget and need a simple, wired network that does not require internet access initially. Which network type should they implement?

A school district with five elementary schools spread across a city needs to connect each school's LAN to a central data center for internet access and shared resources. Which network type should connect the schools to the data center?

During a network upgrade, you need to identify which cable in a messy patch panel corresponds to a specific office wall jack. The cables are not labeled. Which tool should you use?

A technician is configuring a RAID 5 array with three 1 TB HDDs on a motherboard RAID controller. After setup, the array works but the system occasionally freezes during heavy disk I/O. The drives are all SATA 3 Gb/s and the motherboard supports SATA 6 Gb/s. What is the most likely cause?

A user reports that their laser printer occasionally prints pages with a faint ghost image of the previous page. The ghost image appears about 2 inches below the current content. What is the most likely cause?

A user reports that their laptop screen flickers intermittently, but the flickering stops when they adjust the screen angle. What is the most likely hardware issue?

A technician is configuring a new VM for a developer who needs to test software on Windows 10. The host runs Hyper-V on Windows Server 2019. The developer requests that the VM have 8 GB RAM and 4 virtual CPUs. After creating the VM, the technician finds that the VM will not start and displays an error: 'The virtual machine could not be started because the hypervisor is not running.' What is the most likely solution?

A technician is setting up a new file server with four 4 TB SATA SSDs. The customer requires maximum read performance and fault tolerance for up to two drive failures. Which RAID level should the technician choose?

A user complains that their external monitor connected via VGA shows a slightly blurry image with faint horizontal lines. The monitor works perfectly with another computer using the same VGA cable. What is the most likely cause?

A customer reports that their computer beeps three times, pauses, then repeats, and nothing is displayed on the screen. What does this POST code typically indicate?

A user reports that their monitor displays a distorted image with wavy lines. The monitor uses a VGA connection. The technician checks the cable and finds it is not fully tightened. After securing the thumbscrews, the image is still distorted. What is the most likely cause?

During a deployment of a new multifunction printer, the technician needs to ensure the device can scan documents directly to a shared network folder on a Windows server. Which protocol must be configured on the printer to support this?

A user reports that their internet connection is extremely slow, and they notice the modem's 'DSL' light is blinking. They have a DSL connection. What does the blinking DSL light indicate?

A user reports that their wired connection is intermittent. They are using a Cat5e cable connected to a 1000BASE-T switch. The link light on the switch port is blinking rapidly. What is the most likely cause of the intermittent connection?

A technician is configuring a router with two interfaces: WAN (DHCP from ISP) and LAN (static IP 10.0.0.1/24). The technician sets the LAN subnet mask to 255.255.255.0. A workstation is assigned IP 10.0.0.100/24 and can ping the router, but cannot access the internet. The router's WAN interface has IP 203.0.113.5/30. What is the most likely missing configuration?

A small office has an all-in-one printer that supports scanning to email, but users report that scanned documents are not being delivered. The printer's network settings show a valid IP address, and the SMTP server address is correct. What should the technician check next to resolve this issue?

A customer says their external hard drive is not recognized by their laptop. The drive uses a USB-C connector and the laptop has both USB-A and USB-C ports. Which connector type should be used to ensure the fastest possible data transfer?

A company deploys tablets for inventory management. The tablets need to connect to a Bluetooth barcode scanner and also sync data to a cloud server over Wi-Fi. The Bluetooth connection drops every few minutes. What is the most likely cause?

A user reports that they can send emails but cannot receive any. The email client is configured with SMTP for outgoing and POP3 for incoming. The server is reachable. Which port is most likely blocked on the firewall for the incoming mail protocol?

A technician is troubleshooting a network drop where the link light on the switch port is solid but the computer shows 'Unidentified Network'. The cable run is 80 meters and uses Cat5e. The technician tests the cable and finds that pins 1 and 2 are swapped with pins 3 and 6 at one end. What is the most likely result?

A company's file server uses a RAID 5 array with five 4 TB hard drives. One drive fails and is replaced. During the rebuild, the server crashes and the RAID controller reports that the array is 'Failed'. What is the most likely reason for this catastrophic failure?

A user complains that their new laptop only sees 2.4 GHz Wi-Fi networks, not the 5 GHz network that was previously visible on their old phone. The router is dual-band and configured to broadcast both bands. What is the most likely reason the laptop cannot see the 5 GHz network?

A technician is troubleshooting a smartphone that can send and receive text messages but cannot make or receive phone calls. The device shows full signal bars. Which network setting is most likely misconfigured?

A company is deploying 10 Gigabit Ethernet in a data center and needs cabling that supports this speed over a distance of 50 meters. Which cable type should be selected?

A hospital needs to connect multiple buildings across a large campus to share patient records and imaging data. The network must be private, high-speed, and cover the entire campus. Which network type should be implemented?

A technician is troubleshooting a network where a user cannot access the internet. The user's workstation has an IP of 192.168.1.15, subnet mask 255.255.255.0, and default gateway 192.168.1.1. The technician pings 192.168.1.1 successfully but cannot ping 8.8.8.8. What is the most likely cause?

A technician is configuring a new email server for a small business. Employees need to send and receive email from their desktop clients (Outlook) and also access email via a web browser. Which combination of protocols should the technician configure on the server to support both client types?

A technician is installing a new network switch in a server room. The switch has 48 ports and needs to connect to the existing network backbone via fiber optic cable. The technician has a 10GBASE-SR SFP+ module. Which type of fiber optic cable should be used to ensure compatibility?

A technician is repairing a tablet that has a cracked digitizer. The LCD panel is intact and displays correctly. After replacing the digitizer, the touch input is unresponsive. What is the most likely oversight?

A user reports that their Android smartphone's touchscreen is unresponsive after they dropped it. The screen is not cracked, and the device powers on normally. Which of the following is the most likely cause of the touchscreen issue?

A user has an iPhone that will not install a new app from the App Store, displaying a message that the app is 'unable to be installed'. The device has plenty of free storage. What should a technician check first?

A company's web server is hosted internally and must be accessible from the internet using the domain name www.company.com. The public IP address of the router is 203.0.113.5. Which two network services must be correctly configured to make this work?

A user complains that text on their new 27-inch 4K monitor appears very small and hard to read. The display is set to its native resolution. What is the most effective way to make text readable without sacrificing image quality?

A user reports that their new SSD is not recognized by the system. The drive is properly connected and powered. Which UEFI setting should be checked to ensure the drive is detected?

A server motherboard in a data center fails to boot after a power outage. The system has dual power supplies and ECC RAM. When power is restored, the motherboard's POST beeps continuously in a pattern that does not match any known code for that manufacturer. Which component is most likely causing this issue?

A small office has a desktop PC that will not display any video. The motherboard has an integrated VGA port and a PCIe x16 slot that is empty. The system powers on, fans spin, but the monitor connected to the VGA port shows 'No Signal'. What is the most likely cause?

A company wants to consolidate five physical servers into one host to reduce power and cooling costs. Each server runs a different operating system. Which virtualization technology should be used to achieve this?

A user reports that their PC boots to a black screen with a blinking cursor after installing a new SSD. The BIOS detects the SSD, but the system does not load the operating system. What is the most likely cause?

A technician is troubleshooting a Samsung Galaxy tablet that has a cracked screen but still responds to touch. The user wants to transfer data to a new tablet. The technician connects the tablet to a PC via USB, but the PC does not recognize the device. What is the most likely reason?

A technician is upgrading a workstation from a 500 GB HDD to a 1 TB SSD. After installing the SSD, the system boots into the old OS from the HDD instead of the new SSD. The boot order in UEFI shows only the HDD. What is the most likely reason?

A client reports that their new IoT smart bulb can be controlled from a smartphone app only when the phone is within 10 meters of the bulb. The bulb does not connect to the home Wi-Fi. Which network type is the smart bulb using?

A user reports that their smartphone's wireless charging pad stops charging after a few minutes. The phone charges fine with a cable. The charging pad works with another phone. What is the most likely cause?

A customer calls to say their new smart TV can see the 2.4 GHz network but not the 5 GHz network, even though the router is dual-band. The technician checks the router settings and confirms both bands are enabled and broadcasting. What is the most likely reason the TV cannot see the 5 GHz network?

A technician is building a new PC for a video editing workstation. The selected components include an Intel i9-13900K, an NVIDIA RTX 4080, 64GB DDR5 RAM, three NVMe SSDs, and six case fans. What is the minimum recommended power supply wattage for this build?

A technician is troubleshooting a laptop that will not charge. The battery is removable, and the power adapter works on another laptop. When the battery is inserted, the laptop powers on but shows '0% available (plugged in, not charging)'. What is the most likely cause?

A technician is upgrading a server CPU and needs to select a processor that supports ECC memory. Which CPU feature is required for ECC support?

A technician is troubleshooting a network where a user cannot access a web server at 10.0.0.50. The user's workstation has an IP of 10.0.0.25 with a subnet mask of 255.255.255.0. The technician pings 10.0.0.50 and gets a reply, but the web page does not load. What should the technician check next?

A technician is asked to set up a network for a new branch office that will connect back to the main headquarters using a leased line. The branch has 50 employees who need access to centralized databases and email. Which network type best describes the branch office's internal network?