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CompTIA A+ Core 1 220-1201 (220-1201) — Questions 826–900

1020 questions total · 14pages · All types, answers revealed

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826

MCQmedium

A technician is building a PC for video editing and wants to install 32 GB of RAM using four 8 GB modules. The motherboard supports dual-channel memory. Which DIMM slot configuration should the technician use to achieve the best performance?

A.Install all four modules in the same channel (e.g., A1, A2, A3, A4)

B.Install two modules in channel A and two in channel B

C.Install one module in each channel, leaving two slots empty

D.Install three modules in channel A and one in channel B

AnswerB

This configuration utilizes both memory channels, enabling dual-channel mode for maximum bandwidth.

Why this answer

For dual-channel memory with four modules, the motherboard typically uses slots A1, A2, B1, and B2. To enable dual-channel, matching pairs must be in the same channel (e.g., A1 and A2 for channel A, B1 and B2 for channel B). Installing all four modules in the same channel would force single-channel operation, halving memory bandwidth.

Full explanation →

827

MCQhard

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.2

B.4

C.6

D.1

AnswerA

Correct. A /30 subnet has 2 usable addresses, typically used for the two ends of a point-to-point link.

Why this answer

A /30 subnet mask (255.255.255.252) provides 4 total addresses: one network, one broadcast, and two usable. This is commonly used for point-to-point WAN links to conserve public IPs.

Full explanation →

828

MCQmedium

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.Rollover cable

B.Crossover cable

C.Straight-through cable

D.Fiber optic cable

AnswerC

Straight-through cables are standard for connecting devices of different types, such as a modem to a router.

Why this answer

A straight-through Ethernet cable is used to connect different device types, such as a modem to a router. Crossover cables are for connecting similar devices like two computers. This tests knowledge of Ethernet cable standards and their applications.

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829

MCQmedium

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.DHCP

B.NAT

C.DNS

D.RADIUS

AnswerC

DNS resolves hostnames to IPs; a missing or incorrect record prevents name-based access.

Why this answer

This question tests DNS resolution for internal resources. Access by IP works, so the server is reachable. The problem is name resolution, which points to a missing or incorrect DNS record for that hostname.

Full explanation →

830

MCQmedium

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.Connect the 4+4 pin as a 4-pin connector only

B.Use a 6+2 pin PCIe power connector

C.Combine the 4+4 pin into an 8-pin EPS connector

D.Leave the CPU power unconnected

AnswerC

The 4+4 pin connector is designed to be combined for 8-pin EPS use, providing proper power to the CPU.

Why this answer

The 4+4 pin CPU connector can be used as an 8-pin EPS connector by combining the two halves, which is standard for modern motherboards. This tests knowledge of PSU connector configurations and motherboard compatibility. Incorrectly using a 6+2 pin PCIe connector could damage components.

Full explanation →

831

MCQmedium

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?

A.Replace the entire laptop.

B.Replace the LCD panel.

C.Replace the display cable.

D.Use an external monitor permanently.

AnswerB

A cracked LCD panel requires replacement of the panel itself, which is the standard repair.

Why this answer

A cracked LCD panel requires replacement of the entire screen assembly, not just the glass. Replacing the whole LCD panel is the standard and most cost-effective repair for this type of physical damage.

Full explanation →

832

MCQmedium

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.Swap the video cables between the two monitors.

B.Update the graphics driver from the manufacturer's website.

C.Change the resolution of the distorted monitor to 1920x1080 in Windows Display Settings.

D.Replace the monitor with a different model.

AnswerC

This directly fixes the stretched image by matching the monitor's native resolution.

Why this answer

A distorted, stretched image on one monitor suggests the display resolution is set incorrectly for that specific monitor. In a dual setup, Windows may assign different resolutions per monitor. Adjusting the resolution in Display Settings for the affected monitor will correct the aspect ratio.

Full explanation →

833

MCQhard

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.The tablet's display panel is failing.

B.The GPU (Graphics Processing Unit) is overheating.

C.The video streaming app has a software bug or codec issue.

D.The tablet's battery is swollen and pressing on the display.

AnswerC

App-specific flickering indicates a software problem, such as incompatible video codecs or a bug in the app's rendering engine.

Why this answer

This scenario tests the ability to differentiate between hardware and software issues. Since the flicker only occurs in one app, the hardware (display, GPU) is likely fine. The issue is software-related, such as a codec incompatibility or app bug, not a hardware problem.

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834

MCQmedium

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.Install the modules in slots 1, 2, 3, and 4 in any order.

B.Ensure all modules are from the same manufacturer and have the same speed and timings.

C.Install the modules only in the first two slots to leave room for future upgrades.

D.Set the RAM voltage to the maximum supported by the motherboard.

AnswerB

Using identical modules from a matched set ensures compatibility and prevents issues like timing mismatches that can cause crashes or failure to boot.

Why this answer

When installing four identical RAM modules, the key consideration is ensuring they are all from the same matched set or have identical specifications (speed, timings, voltage) to maintain stability and performance. Mixing modules from different manufacturers or batches can cause instability even if they have the same rated speed. Additionally, the technician should install them in the correct slots for dual-channel operation, but the primary concern is compatibility.

Full explanation →

835

MCQeasy

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.Low ink levels in the cartridge

B.Clogged printhead nozzles

C.Faulty fuser assembly

D.Incorrect paper type setting

AnswerB

Partial clogging can cause intermittent blank pages because the nozzles may not fire consistently, even though the alignment test uses a different pattern.

Why this answer

Inkjet printers that print blank pages often have clogged printhead nozzles, especially after refilling. Even if the alignment test prints fine, the nozzles may be partially blocked, causing some pages to print blank. Running a printhead cleaning cycle usually resolves this.

Full explanation →

836

MCQhard

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.137

B.139

C.445

D.443

AnswerC

Port 445 is used by SMB directly over TCP/IP, without NetBIOS.

Why this answer

Port 445 is used by SMB directly over TCP/IP (also known as SMB over TCP). Ports 137-139 are used by NetBIOS over TCP/IP, which is older and less secure. Port 443 is HTTPS, and port 21 is FTP.

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837

MCQmedium

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.Initialize the missing drive in Disk Management.

B.Replace the RAID controller.

C.Check the SATA cable and power connection to the missing drive.

D.Rebuild the array using the remaining two drives.

AnswerC

Correct. A loose or faulty cable is a common cause of a drive not being detected.

Why this answer

If a drive is not detected in BIOS, the issue is at the hardware level—cable, power, or drive failure. The next step is to check connections. This tests systematic troubleshooting of RAID hardware.

Full explanation →

838

MCQeasy

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.The modem is overheating

B.Bandwidth congestion from neighbors

C.A faulty Ethernet cable

D.The ISP is throttling video streaming

AnswerB

Cable internet shares bandwidth locally, leading to slower speeds during peak hours.

Why this answer

Cable internet uses a shared medium, so bandwidth is divided among users in the same neighborhood, causing slowdowns during peak usage. DSL and fiber are typically dedicated lines, and satellite latency is constant. This is a common complaint with cable broadband.

Full explanation →

839

MCQmedium

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.Elasticity

B.Scalability

C.High availability

D.Fault tolerance

AnswerC

High availability, especially when implemented across multiple regions, ensures service continuity even if one region fails.

Why this answer

High availability across regions is achieved through redundancy, such as replicating data to multiple geographic locations. This ensures that if one region fails, another can serve the data. Scalability, elasticity, and fault tolerance at a single site do not provide geographic redundancy.

Full explanation →

840

MCQeasy

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.The laptop's Wi-Fi antenna is damaged.

B.The 5 GHz radio on the access point is disabled.

C.The laptop's drivers are not compatible with 802.11n.

D.The access point is set to 802.11b-only mode.

AnswerB

802.11ac requires 5 GHz; if that radio is off, the laptop cannot see the network, while 2.4 GHz-only 802.11n devices still connect.

Why this answer

802.11ac operates exclusively on the 5 GHz band, so if the 5 GHz radio is disabled or the SSID is hidden, the laptop cannot connect. This tests knowledge of 802.11ac's band requirement and dual-band configuration.

Full explanation →

841

MCQeasy

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.A 2.5-inch SATA HDD

B.A 3.5-inch SATA HDD

C.An M.2 SATA SSD

D.A 2.5-inch PATA (IDE) HDD

AnswerB

A 3.5-inch SATA HDD uses the same SATA data and power connectors as the existing SSD, is designed for desktop cases, and offers high capacity at low cost, making it ideal for nightly backups.

Why this answer

This question tests basic knowledge of SATA interfaces and form factor compatibility. A 3.5-inch SATA HDD is the standard choice for bulk storage in a desktop, and it uses the same SATA data and power connectors as the existing SSD. The other options either have incompatible connectors or are not standard internal drives.

Full explanation →

842

MCQhard

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.Increase the bandwidth of the internet connection

B.Replace all switches with managed switches and enable QoS

C.Change all VoIP phones to use static IP addresses

D.Disable DHCP on the network to reduce broadcast traffic

AnswerB

Managed switches with QoS can prioritize VoIP traffic, reducing latency and jitter, which directly improves call quality.

Why this answer

This question tests knowledge of Quality of Service (QoS) and network segmentation. VoIP traffic is sensitive to latency and jitter. Implementing QoS prioritizes voice traffic over other data, ensuring call quality even during high utilization.

VLANs can also help by separating voice and data traffic.

Full explanation →

843

MCQmedium

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.Enable USB 3.0 controller in the VM settings

B.Configure network bridging for the VM

C.Enable USB passthrough and attach the dongle to the VM

D.Install the dongle driver on the host OS

AnswerC

USB passthrough gives the VM direct hardware access to the USB device, which is required for licensing dongles.

Why this answer

USB passthrough allows the VM to directly access a physical USB device, bypassing the host OS. This is required for devices like dongles that need exclusive access.

Full explanation →

844

MCQhard

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.The Wi-Fi adapter is faulty.

B.The phone's date and time are incorrect.

C.The CA certificate for the network is not installed or trusted.

D.The phone is using a static IP address.

AnswerC

Correct. WPA2-Enterprise requires a trusted CA certificate; without it, the phone cannot authenticate the server.

Why this answer

This question tests advanced Wi-Fi configuration knowledge. WPA2-Enterprise with PEAP requires a valid CA certificate to verify the server. If the certificate is missing or untrusted, the connection will fail.

The other options would affect all networks or are less specific.

Full explanation →

845

MCQhard

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.The RAID 10 array is not fast enough for database I/O.

B.The database server VM should have more virtual CPUs allocated, such as 4 vCPUs.

C.The hypervisor is using a Type 2 hypervisor, causing overhead.

D.The virtual switch is configured for 100 Mbps instead of 1 Gbps.

AnswerB

Database workloads are often CPU-intensive. With only 2 vCPUs, the VM may be competing with others; increasing vCPUs for the database server can improve performance.

Why this answer

The database server is likely CPU-starved because it has only 2 vCPUs while other VMs also have 2 vCPUs, leading to contention on the physical cores. The correct answer involves adjusting CPU allocation to match workload demands. This tests understanding of CPU scheduling in virtualization.

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846

MCQmedium

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.The DNS server address is set to 10.0.0.1.

B.The subnet mask is incorrectly set to 255.255.0.0 on some computers.

C.The default gateway on the computers is not set to 10.0.0.1.

D.The router's DHCP server is disabled.

AnswerC

Without the correct default gateway, computers cannot send traffic outside their local subnet, which would prevent internet access.

Why this answer

If users can communicate locally but not access the internet, the issue is likely with the default gateway. The gateway must be correctly configured on each device and the router must have a route to the internet.

Full explanation →

847

MCQhard

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.The laptop's battery is completely dead and needs replacement.

B.The USB-C port is damaged or has bent pins.

C.The power adapter is not outputting enough wattage.

D.The laptop's BIOS settings have disabled the USB-C port.

AnswerB

This is correct; physical damage prevents both charging and data transfer.

Why this answer

Since the USB-C port fails to detect a flash drive and also does not charge, the port itself is likely damaged. This could be due to bent pins or internal damage. The correct answer is a damaged USB-C port.

Full explanation →

848

MCQmedium

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.Local Area Network (LAN)

B.Wide Area Network (WAN)

C.Personal Area Network (PAN)

D.Metropolitan Area Network (MAN)

AnswerC

A PAN is the correct network type for short-range personal peripherals like wireless mice and keyboards.

Why this answer

Wireless mice and keyboards typically use Bluetooth or proprietary RF, which are PAN technologies. PANs are designed for short-range (usually up to 10 meters or 33 feet) connections between personal devices. LAN, WAN, and MAN are larger networks not used for peripherals.

The correct answer is PAN.

Full explanation →

849

MCQeasy

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.A Bluetooth keyboard

B.A fine-point capacitive stylus

C.A screen protector

D.A passive stylus with a rubber tip

AnswerB

A capacitive stylus is designed to work with capacitive touchscreens, providing the necessary conductive tip for accurate input.

Why this answer

Capacitive touchscreens require a conductive stylus to register touch. A fine-point capacitive stylus provides the necessary conductivity and precision for annotation, unlike a passive stylus or a Bluetooth keyboard which won't affect touch input.

Full explanation →

850

MCQmedium

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.ping -t

B.tracert

C.netstat -r

D.pathping

AnswerB

Tracert lists each hop along the route and can reveal which hop is failing, allowing the technician to isolate the problem to a specific router or firewall.

Why this answer

Tracert (or traceroute) sends packets with increasing TTL values to map the route and show where hops fail, pinpointing the router or firewall dropping packets. Ping only tests end-to-end reachability, netstat shows active connections, and pathping combines ping and tracert but is slower.

Full explanation →

851

MCQmedium

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.Check the printer's default gateway setting.

B.Verify the switch port status and cable connection.

C.Change the printer's IP address to a DHCP address.

D.Reboot the router.

AnswerB

Correct—a physical layer issue is the most common cause of a device being unreachable on the same subnet.

Why this answer

Since the printer and workstations are on the same subnet, the issue is likely at Layer 2 or Layer 1. The first step is to verify the physical connection and link status on the switch port, as a bad cable or disabled port would prevent communication.

Full explanation →

852

MCQeasy

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.The modem's power supply is failing.

B.Moisture in the copper line causes signal degradation.

C.The customer's router is overheating.

D.The ISP is throttling the connection during storms.

AnswerB

Rain can introduce moisture into DSL copper lines, increasing resistance and causing intermittent loss of sync.

Why this answer

DSL uses copper telephone lines that can degrade when moisture infiltrates the wiring or splices, leading to intermittent connectivity during rain. Unlike cable or fiber, DSL is particularly susceptible to weather-related signal loss due to aging infrastructure.

Full explanation →

853

MCQhard

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.A USB-C to USB-C cable

B.A USB-C hub with power delivery pass-through

C.A USB-C to USB-A adapter

D.A wireless SSD with Bluetooth 5.0

AnswerB

This hub allows the tablet to charge via the hub's PD port while the SSD connects at USB 3.1 Gen 2 speeds.

Why this answer

A USB-C hub with power delivery (PD) pass-through allows the tablet to be charged while connecting the SSD at full speed. A direct USB-C to USB-C cable would not allow simultaneous charging. A USB-A adapter would limit speed, and a wireless SSD would introduce latency and require separate power.

Full explanation →

854

MCQhard

After replacing a CPU in a desktop, the system powers on but shows a black screen with no POST. The old CPU worked fine. Which BIOS-related step should be taken first?

A.Reset the CMOS by removing the battery

B.Update the BIOS to a version that supports the new CPU

C.Check the CPU power cable connection

D.Enable legacy boot mode

AnswerB

A BIOS update provides the necessary microcode for the new CPU to function.

Why this answer

Many motherboards require a BIOS update to support newer CPU microcode. Without it, the system cannot initialize the CPU. This question tests knowledge of CPU compatibility and the role of firmware updates in hardware support.

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855

MCQhard

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.Secure Print (PIN release)

B.IPsec for network printing

C.Hard drive encryption

D.User authentication via LDAP

AnswerC

Hard drive encryption protects data stored on the MFP's internal drive, ensuring print jobs are unreadable if the drive is accessed physically.

Why this answer

Secure print release only holds jobs until the user enters a PIN, but the data may still be stored on the hard drive. Hard drive encryption ensures that even if the drive is removed, the data is unreadable. Both features together provide comprehensive security.

Full explanation →

856

MCQmedium

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.Enable Developer Options and set the app as the default launcher.

B.Install a third-party launcher and hide all other apps.

C.Use a Mobile Device Management (MDM) solution to configure kiosk mode.

D.Root the tablets and modify the system partition to block other apps.

AnswerC

MDM solutions provide enterprise-grade kiosk mode that locks the device to a single app and disables navigation keys, ensuring security and manageability.

Why this answer

This question tests knowledge of mobile device management (MDM) and kiosk mode deployment. The correct approach is to use an MDM solution to lock the device into a single-app kiosk mode, which is a standard enterprise feature for dedicated devices.

Full explanation →

857

MCQeasy

A user reports that their wired workstation cannot connect to the internet, but other devices on the same switch work fine. You need to verify the link status and speed of the workstation's network adapter. Which tool should you use?

A.Cable tester

B.Multimeter

C.Toner probe

D.Loopback plug

AnswerA

A cable tester can check for continuity, shorts, and link status on Ethernet cables, directly addressing the need to verify the physical connection.

Why this answer

This question tests knowledge of basic network troubleshooting tools. The cable tester is designed to verify physical connectivity and link status of Ethernet cables, making it the correct choice for checking the workstation's connection.

Full explanation →

858

MCQeasy

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.Cable broadband

B.DSL

C.Fiber optic

D.Satellite

AnswerD

Satellite internet is accessible from virtually any location with a clear line of sight to the sky.

Why this answer

Satellite internet is available almost anywhere with a clear view of the sky, making it ideal for rural areas without wired infrastructure. Cable, DSL, and fiber all require physical infrastructure that may not reach remote locations.

Full explanation →

859

MCQeasy

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.The BIOS has a power-on password enabled.

B.The BIOS is set to the wrong CPU multiplier.

C.The BIOS thermal protection feature is triggering due to CPU overheating.

D.The UEFI boot order is set to network boot first.

AnswerC

The BIOS monitors CPU temperature and shuts down the system when a critical threshold is reached; the cooldown period is the time needed for the CPU to cool below that threshold.

Why this answer

This scenario describes thermal shutdown protection. The BIOS/UEFI monitors CPU temperature via sensors and will shut down the system to prevent damage if temperatures exceed safe thresholds. The delay before restarting allows the CPU to cool down.

Full explanation →

860

MCQhard

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.The cable is too long for Gigabit.

B.One of the four wire pairs is broken or shorted.

C.The network card is set to 100 Mbps manually.

D.The switch port is configured for 100 Mbps.

AnswerB

Gigabit requires all four pairs; if one pair fails, the device auto-negotiates to 100 Mbps using two pairs.

Why this answer

If only one pair of wires is faulty, Gigabit Ethernet (which uses all four pairs) will fall back to 100 Mbps (which uses only two pairs). This is a common issue with damaged cables. A faulty pair may not cause a complete link loss but will reduce speed.

Full explanation →

861

MCQmedium

A technician is building a new workstation for video editing and needs to choose a storage configuration that offers the best read performance for large media files. Which setup should they select?

A.A single 2TB 7200 RPM HDD

B.Two SSDs in RAID 1 (mirroring)

C.Two SSDs in RAID 0 (striping)

D.A single NVMe SSD

AnswerC

RAID 0 stripes data across both drives, significantly boosting read and write speeds for large files.

Why this answer

This question tests RAID level knowledge for performance. RAID 0 stripes data across multiple drives, improving read/write speeds, which is ideal for large file access in video editing.

Full explanation →

862

MCQhard

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.FTP

B.SMB

C.NFS

D.HTTP

AnswerB

SMB is the native Windows file sharing protocol, used for accessing shared folders over a network.

Why this answer

This question tests knowledge of file sharing protocols. SMB (Server Message Block) is the standard protocol for Windows file sharing, used both locally and over VPN/internet (with proper security). NFS is for Unix/Linux, FTP is less secure, and HTTP is for web files.

Full explanation →

863

MCQeasy

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.Faulty AC adapter

B.Dead CMOS battery

C.Defective battery

D.Corrupted battery driver

AnswerC

A battery that cannot charge despite being connected to a known-good power source is almost always defective.

Why this answer

When a laptop runs on AC but the battery shows 0% and does not charge, the battery has likely reached the end of its life cycle. Lithium-ion batteries degrade over time and lose capacity; eventually they can no longer hold a charge. The solution is to replace the battery.

Full explanation →

864

MCQhard

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.Satellite internet

B.Fixed wireless (e.g., point-to-point microwave)

C.Cellular 4G/5G hotspot

D.Dial-up

AnswerB

Fixed wireless can provide low latency and reliable speeds suitable for VoIP and video, especially with line-of-sight.

Why this answer

Fixed wireless (using point-to-point or point-to-multipoint antennas) can provide reliable, low-latency connections in areas without wired infrastructure, often using licensed or unlicensed spectrum. Satellite has high latency, cellular can be inconsistent, and dial-up is too slow.

Full explanation →

865

MCQhard

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.1433

B.1521

C.3306

D.5432

AnswerC

Port 3306 is the default port for MySQL database connections.

Why this answer

MySQL uses port 3306 by default for client connections. Opening this port allows remote database access.

Full explanation →

866

MCQeasy

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.Uninstall the social media app immediately.

B.Check the app's permissions and disable background activity.

C.Perform a factory reset of the device.

D.Update the phone's operating system.

AnswerB

Correct. Many apps drain battery by running in the background; restricting that can resolve the issue.

Why this answer

This is a common battery drain issue. Checking the app's permissions (especially background activity) is the quickest way to identify if the app is misbehaving. Uninstalling is effective but not the first step, and a factory reset is too drastic.

Full explanation →

867

MCQhard

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.Use a single high-power access point to cover the entire hall

B.Deploy multiple access points with reduced transmit power and non-overlapping channels

C.Disable the 5 GHz band to reduce complexity

D.Enable WPS for faster client connections

AnswerB

Multiple APs with low power and careful channel planning maximize capacity and minimize interference, ideal for high density.

Why this answer

In high-density environments, using multiple access points with low power and careful channel planning reduces co-channel interference and allows more clients. High power on a single AP causes congestion. Disabling 5 GHz or using only 2.4 GHz limits capacity.

Enabling WPS is a security risk and does not help density.

Full explanation →

868

MCQmedium

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.The laptop's DNS server is misconfigured.

B.The server at 192.168.2.10 is offline.

C.The default gateway does not have a route to the 192.168.2.0 subnet.

D.The laptop's subnet mask is incorrect.

AnswerC

The laptop can reach its own gateway, but the gateway must have a route to forward traffic to the 192.168.2.x network. Without that route, packets are dropped.

Why this answer

The laptop can ping its own gateway (192.168.1.1) but not a server on a different subnet (192.168.2.10). This indicates that the gateway is reachable, but routing between subnets is failing. The default gateway may not have a route to the 192.168.2.x network, or the server's gateway is not configured to route back.

Full explanation →

869

MCQmedium

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.Verify that the tablet's Wi-Fi is enabled.

B.Check the VPN server address and authentication credentials.

C.Ensure the tablet's date and time are set automatically.

D.Disable the firewall on the tablet.

AnswerB

Incorrect server address or credentials are the most common reasons for VPN failure, preventing the secure tunnel from forming.

Why this answer

This scenario tests VPN troubleshooting. The most common issue is incorrect VPN credentials or server address, which would prevent the tunnel from establishing. DNS settings are also critical but checking credentials is the first logical step.

Full explanation →

870

MCQmedium

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.Update the touchpad driver

B.Disable the touchpad in Device Manager and re-enable it

C.Clean the touchpad surface with a soft cloth

D.Replace the touchpad

AnswerC

Dirt or moisture on the touchpad can cause erratic cursor movement; cleaning it often resolves the issue immediately.

Why this answer

Cursor jumping is often caused by a dirty or greasy touchpad surface. Cleaning the touchpad with a soft, lint-free cloth is the simplest and most effective first step before considering driver or hardware issues.

Full explanation →

871

MCQmedium

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.LAN using CAT6 Ethernet cable

B.WAN using a satellite link

C.MAN using a point-to-point wireless bridge

D.PAN using Bluetooth

AnswerC

A MAN covers a city area; wireless bridges can connect buildings miles apart without cabling, suitable for this distance.

Why this answer

This scenario requires a MAN (Metropolitan Area Network) because it connects two locations within a city. A point-to-point wireless bridge is a common, cost-effective solution for distances up to several miles when cabling is impractical. MANs are designed for such metropolitan-scale connections.

Full explanation →

872

MCQmedium

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.The ECC RAM is not seated properly.

B.The BIOS needs to be updated to enable ECC support.

C.The CPU does not support ECC memory.

D.ECC RAM requires a registered (buffered) type to function.

AnswerC

Many consumer-grade CPUs do not support ECC, even if the motherboard does. The CPU's memory controller must be ECC-capable for the feature to work.

Why this answer

ECC RAM requires a compatible CPU and motherboard chipset to function. If the CPU does not support ECC, the system may still boot with the RAM installed but will run it in non-ECC mode, disabling the error correction feature.

Full explanation →

873

MCQmedium

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.Cat5e cable.

B.Cat6 cable.

C.Cat6a cable.

D.Cat7 cable.

AnswerC

Cat6a supports 10 Gbps up to 100 meters, making it ideal for 25-meter rack connections.

Why this answer

This question tests knowledge of cabling standards for high-speed Ethernet. Cat6a is rated for 10 Gbps up to 100 meters, making it suitable for this distance. The correct answer distinguishes Cat6a from Cat6, which has shorter 10 Gbps support.

Full explanation →

874

MCQhard

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.The tablets have the wrong date and time set.

B.The tablets are missing the root CA certificate in their trusted store.

C.The tablets are using WPA2-Personal instead of WPA2-Enterprise.

D.The tablets have a static IP configured that conflicts with the DHCP scope.

AnswerB

For 802.1X with certificates, the device must trust the CA that signed the server certificate; without it, the handshake fails.

Why this answer

802.1X with certificates requires the device to trust the certificate authority (CA) that issued the server certificate. Without the CA certificate installed, the device cannot validate the server, causing authentication failure.

Full explanation →

875

MCQmedium

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.254

B.255

C.256

D.128

AnswerA

With a /24 subnet, there are 256 addresses total, minus 2 for network and broadcast, leaving 254 usable host addresses.

Why this answer

A subnet mask of 255.255.255.0 (or /24) provides 256 total addresses, with 254 usable for hosts (the first address is the network ID and the last is the broadcast address). This is sufficient for the current 50 devices and allows for growth up to 100, but not beyond 254.

Full explanation →

876

MCQhard

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.USB-C to USB-C cable

B.HDMI to HDMI cable

C.USB-C to HDMI adapter or cable

D.DisplayPort to HDMI cable

AnswerC

This cable converts the USB-C signal to HDMI, leveraging DisplayPort Alt Mode for video output.

Why this answer

The correct answer is C because USB-C to HDMI cables or adapters are designed for this exact scenario when the USB-C port supports DisplayPort Alt Mode. This tests understanding of USB-C Alt Mode and the need for compatible cables.

Full explanation →

877

MCQmedium

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.The IP address of the cable modem.

B.192.168.0.1

C.The IP address of the switch.

D.192.168.0.255

AnswerB

This is the router's LAN IP, which serves as the gateway for all computers on the local network to access other networks.

Why this answer

The default gateway is the IP address of the router's LAN interface, which is 192.168.0.1. This allows computers to send traffic outside their local subnet, such as to the internet.

Full explanation →

878

MCQhard

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.DSL

B.Cable broadband

C.Fixed wireless

D.Satellite

AnswerC

Fixed wireless uses a dedicated antenna for a stable connection, better than a mobile hotspot.

Why this answer

Fixed wireless access (FWA) uses a directional antenna to connect to a nearby tower, offering more stability than a mobile hotspot. Satellite has high latency, DSL requires phone lines, and cable requires coaxial. FWA is ideal for rural areas without wired options.

Full explanation →

879

MCQeasy

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.Replace the video cable with a DVI cable.

B.Update the graphics driver.

C.Adjust the color settings in the monitor's on-screen display.

D.Set the resolution to the monitor's native resolution.

AnswerC

Adjusting color settings like brightness, contrast, and color temperature can correct washed-out colors.

Why this answer

LCD monitors often have different color gamuts and settings than CRTs. The most straightforward fix is to adjust the color calibration settings in the monitor's OSD or OS to improve color accuracy.

Full explanation →

880

MCQeasy

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?

A.Replace the HDMI cable.

B.Press the function key to toggle display output.

C.Update the graphics driver.

D.Check the monitor's power cable.

AnswerB

Many laptops require pressing a function key (e.g., F4 or F8) to enable external display output. This is the most common cause of 'No Signal' when the monitor works.

Why this answer

This scenario tests basic display troubleshooting. The monitor works with another device, so the issue is likely with the laptop's video output or connection. The first step is to check if the laptop is set to output to the external display, often via a function key like F4 or F8.

Full explanation →

881

MCQmedium

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.The UEFI firmware has become corrupted and needs reflashing.

B.The motherboard's CMOS battery is depleted or failing.

C.The power supply unit is not providing enough standby power.

D.The hard drive is failing and corrupting the boot sector.

AnswerB

The CMOS battery maintains the BIOS settings and real-time clock when the system is off; a failing battery causes checksum errors and loss of date/time.

Why this answer

The CMOS checksum error indicates that the BIOS settings are corrupted or not being retained. The date/time resetting after power-off points to a failing or dead CMOS battery, which powers the volatile memory that stores these settings when the system is off.

Full explanation →

882

MCQmedium

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.The computer's NIC is faulty.

B.The patch cable is not a crossover cable.

C.The wall jack is terminated incorrectly.

D.The switch port is administratively down.

AnswerC

An incorrect termination at the new jack would prevent a link, explaining the no-link light.

Why this answer

This question tests understanding of cable termination and wiring standards. A faulty termination at the wall jack or patch panel is a common cause of intermittent or no connectivity. The correct answer focuses on the physical connection at the new location.

Full explanation →

883

MCQmedium

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.67

B.68

C.53

D.123

AnswerA

Port 67 is the DHCP server port, used to receive client requests and send offers.

Why this answer

DHCP uses UDP ports 67 (server) and 68 (client). Opening port 67 allows DHCP server broadcasts to reach clients.

Full explanation →

884

MCQhard

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.Local Area Network (LAN)

B.Wide Area Network (WAN)

C.Personal Area Network (PAN)

D.Metropolitan Area Network (MAN)

AnswerC

A PAN is ideal for short-range, direct communication between personal devices, such as smart home gadgets, without a central hub.

Why this answer

A Personal Area Network (PAN) is designed for short-range, device-to-device communication, typically within 10-30 meters, and can operate without a central hub using technologies like Bluetooth or Zigbee. This matches the smart home scenario. A LAN would require a router, a WAN is for long distance, and a MAN is for city-scale.

Full explanation →

885

MCQeasy

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.CMOS battery

B.Front panel header

C.Chipset heatsink

D.CPU socket

AnswerB

The front panel header carries the power switch connection; a loose or faulty connection here can prevent the motherboard from receiving the power-on signal.

Why this answer

The CMOS battery is not involved in the power-on process; it only maintains BIOS settings. The chipset and CPU are not directly responsible for the initial power-up sequence. The power-on process begins with the power button connecting to the front panel header, and if that connection is faulty, the motherboard never receives the signal to start the PSU.

Full explanation →

886

MCQeasy

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.The printer is using too much bandwidth.

B.The network cable is run too close to power cables.

C.The desktop has a duplicate IP address.

D.The switch port is administratively down.

AnswerB

Correct. EMI from the printer's power supply or motor can disrupt unshielded twisted pair cabling.

Why this answer

This question focuses on physical layer interference. Intermittent connectivity linked to a device starting suggests electromagnetic interference (EMI) from the printer's motor or power supply. Network cables near strong EMI sources can experience packet loss or disconnects.

Full explanation →

887

MCQhard

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.Replace the CPU with a known good one

B.Update the motherboard BIOS to the latest version

C.Run a memory diagnostic tool like MemTest86

D.Check the CPU voltage in BIOS and increase it slightly

AnswerC

Memory errors can mimic CPU problems; testing RAM is a logical next step after CPU stress tests pass.

Why this answer

Random lockups and blue screens can also be caused by memory errors. Running a memory diagnostic tool like MemTest86 will test the RAM for faults, which can produce symptoms similar to a failing CPU. This helps rule out memory before replacing the CPU.

Full explanation →

888

MCQmedium

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.The tablet's camera hardware is defective.

B.The app is not compatible with the tablet's Android version.

C.The camera permission for the app has been denied.

D.The tablet's storage is full, preventing the app from saving photos.

AnswerC

If the permission is denied, the app cannot access the camera, causing it to fail on that specific device.

Why this answer

This question focuses on mobile app permissions and hardware access. Since the app works on other tablets, the issue is specific to the failing device. The most common cause is that the camera permission was denied for that app.

Checking and granting the permission in Settings should resolve it.

Full explanation →

889

MCQmedium

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.DNS zone file

B.DHCP scope

C.NAT rules

D.QoS policy

AnswerB

The DHCP scope defines the IP address range and lease time for automatic assignment to clients.

Why this answer

The DHCP server configuration controls IP address ranges (scopes) and lease times. By modifying the DHCP scope, the administrator can set the desired IP range and lease duration. DNS and NAT do not manage IP assignment, and QoS handles traffic prioritization.

Full explanation →

890

MCQeasy

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?

A.A DSL modem

B.A cable modem

C.A CSU/DSU

D.A wireless access point

AnswerC

Correct. A Channel Service Unit/Data Service Unit is used to connect to a T1 or leased line, providing dedicated, consistent bandwidth.

Why this answer

This question tests knowledge of WAN hardware for dedicated connections. A CSU/DSU is used for T1 or leased lines, which provide dedicated bandwidth. Other options are for different connection types.

Full explanation →

891

MCQhard

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.Cable broadband, because it uses coaxial cable which is faster than fiber

B.Fiber-optic, because it uses light signals and is not subject to electromagnetic interference

C.Cable broadband, because it has higher download speeds

D.Fiber-optic, because it provides lower latency due to the speed of light in glass and dedicated bandwidth

AnswerD

Fiber's use of light and lack of shared bandwidth results in the lowest latency.

Why this answer

Fiber-optic offers the lowest latency due to light transmission and dedicated bandwidth, essential for real-time trading. Cable broadband has higher latency due to shared bandwidth and signal conversion. Fiber's physical properties make it superior for latency-sensitive applications.

Full explanation →

892

MCQeasy

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.Type 2 hypervisor

B.Container-based virtualization

C.Type 1 hypervisor

D.Emulation virtualization

AnswerC

A Type 1 hypervisor runs directly on hardware, allowing each VM to have dedicated resources and run different OSes without a host OS.

Why this answer

This scenario describes a Type 1 (bare-metal) hypervisor, which installs directly on hardware and allocates dedicated resources to each virtual machine. Type 1 hypervisors are used in data centers and server virtualization to maximize performance and isolation.

Full explanation →

893

MCQeasy

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.Enable Legacy Boot (CSM)

B.Enable Secure Boot

C.Enable TPM

D.Set boot order to network first

AnswerB

Secure Boot verifies the digital signature of the bootloader.

Why this answer

Secure Boot ensures that only software signed with trusted certificates can boot. This prevents unauthorized bootloaders and rootkits. This tests knowledge of UEFI security features.

Full explanation →

894

MCQeasy

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.USB-C to VGA adapter

B.USB-C to HDMI adapter

C.USB-C to DisplayPort cable

D.USB-C to DVI adapter

AnswerC

USB-C often supports DisplayPort alternate mode natively, providing uncompressed 4K video at high refresh rates, making it the best choice.

Why this answer

USB-C can carry DisplayPort signals natively, so a USB-C to DisplayPort cable supports 4K at high refresh rates without compression. HDMI may also work but depends on the laptop's alternate mode support.

Full explanation →

895

MCQmedium

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.Enable hardware virtualization in the BIOS.

B.Reduce the RAM allocation of the 4 GB VM to 2 GB.

C.Convert the VMs to use dynamic memory allocation.

D.Move the VMs to a Type 1 hypervisor.

AnswerB

Reducing RAM allocation frees memory for the host and the other VM, improving overall performance. This is a quick fix without additional cost.

Why this answer

Over-allocating RAM to VMs on a host with limited memory causes swapping and poor performance. The best solution is to reduce the RAM allocated to the VMs or use dynamic memory allocation if supported. The correct answer focuses on adjusting VM memory settings, which is a practical troubleshooting step.

Full explanation →

896

MCQmedium

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.The DVI cable is loose or damaged

B.The graphics card driver is outdated

C.The monitor's refresh rate is set too high

D.The DVI port is incompatible with the cable

AnswerA

A loose connection or damaged cable can cause intermittent signal loss, leading to flickering.

Why this answer

A loose or damaged DVI cable is a common cause of intermittent flickering, as poor contact can disrupt the signal. DVI-I and DVI-D are compatible, so port type is less likely the issue. This tests troubleshooting skills for display connection problems.

Full explanation →

897

MCQhard

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.The camera's IP address is conflicting with another device.

B.The cable length exceeds the maximum specification for Ethernet.

C.The PoE switch does not support the camera's power requirement.

D.The camera is configured for a different VLAN.

AnswerB

Correct. 100 meters is the limit; at that length, signal loss can prevent link.

Why this answer

This question tests knowledge of Ethernet cable length limits. Cat6 is rated for 100 meters; at exactly that distance, signal degradation can cause link failure. The PoE switch may not provide enough power over that distance, or the cable may be slightly too long.

Full explanation →

898

MCQmedium

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.Personal Area Network (PAN)

B.Local Area Network (LAN)

C.Wide Area Network (WAN)

D.Metropolitan Area Network (MAN)

AnswerB

A LAN is perfect for connecting multiple devices in a small area like an office room to share files and printers.

Why this answer

A LAN (Local Area Network) is designed for a small area like a single room or building to share resources among devices. A PAN is too limited for five computers, a WAN is for long distances, and a MAN is for a larger area. The correct answer is LAN because it fits the single-room, resource-sharing requirement.

Full explanation →

899

MCQhard

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.The touchscreen driver is corrupted.

B.The digitizer is failing.

C.The LCD panel has shifted inside the chassis.

D.The operating system needs a touchscreen firmware update.

AnswerC

A physical shift of the LCD panel causes the touch coordinates to be offset from the display, which calibration cannot correct.

Why this answer

A misaligned screen relative to the bezel suggests that the LCD panel has shifted inside the chassis. This physical misalignment can cause the touch sensor to be out of sync with the display, leading to touch inaccuracies that calibration cannot fix.

Full explanation →

900

MCQeasy

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.Port 9100

B.Port 515

C.Port 443

D.Port 631

AnswerD

Port 631 is the standard port for IPP, including secure IPP with encryption.

Why this answer

Secure IPP (Internet Printing Protocol) uses port 631 with encryption. Port 9100 is for raw printing (often HP JetDirect), port 515 for LPD, and port 443 for HTTPS but not specifically for printing. Port 631 is the correct choice for secure IPP.

Full explanation →

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