Knowledge + Practice

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.

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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

The LCD panel contains the glass substrate and liquid crystal layer that physically cracks, causing localized lines and discoloration. Replacing just the LCD panel (the display assembly) is the most cost-effective solution because it restores full functionality without the expense of a new laptop or the inconvenience of a permanent external monitor. The display cable is unlikely to cause a crack or localized discoloration, as cable damage typically affects the entire screen or causes intermittent issues.

Exam trap

CompTIA often tests the misconception that a cracked screen always requires a full laptop replacement, when in fact the LCD panel is a modular, replaceable component that is far cheaper to swap out.

How to eliminate wrong answers

Option A is wrong because replacing the entire laptop is unnecessarily expensive when only the LCD panel is damaged; the rest of the system is functional. Option C is wrong because the display cable (LVDS or eDP) would not cause a physical crack or localized discoloration; cable faults usually result in no display, flickering, or artifacts across the entire screen. Option D is wrong because using an external monitor permanently negates the portability of the laptop and is not a repair; it is a workaround that does not address the cracked LCD panel.

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

The screen flickers only within a specific video streaming app, while the home screen and other apps remain stable. This strongly indicates the issue is isolated to software, specifically a bug or codec incompatibility within that app, rather than a hardware failure affecting the entire display or GPU.

Exam trap

The 220-1201 exam often tests the distinction between hardware and software faults by isolating the symptom to a single application, tempting candidates to incorrectly attribute the issue to a failing display panel or GPU when the problem is actually a software bug or codec incompatibility.

How to eliminate wrong answers

Option A is wrong because a failing display panel would cause flickering across all apps and the home screen, not just one app. Option B is wrong because GPU overheating typically causes system-wide graphical artifacts, crashes, or performance throttling across all applications, not flickering limited to a single app. Option D is wrong because a swollen battery pressing on the display would cause persistent physical distortion, pressure marks, or flickering regardless of which app is open, and would not be app-specific.

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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.

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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 the correct answer because it is used by Microsoft SMB (Server Message Block) for direct TCP/IP communication without the need for NetBIOS. This is known as SMB over TCP (or SMB Direct), which operates as a transport protocol directly over TCP, bypassing the NetBIOS layer. Ports 137, 138, and 139 are associated with NetBIOS over TCP/IP (NBT), which is the older protocol stack that the auditor recommends disabling.

Exam trap

A common trap in this question is confusing port 139 (NetBIOS-based SMB) with port 445 (direct SMB over TCP). Many candidates incorrectly associate port 443 with file sharing due to its use in HTTPS, but 443 is for secure web traffic, not SMB.

How to eliminate wrong answers

Option A is wrong because port 137 is used for NetBIOS name service (NBNS), which is part of the NetBIOS over TCP/IP suite and not for direct SMB communication. Option B is wrong because port 139 is used for NetBIOS session service, which carries SMB traffic over NetBIOS, not directly over TCP/IP. Option D is wrong because port 443 is used for HTTPS (HTTP over TLS/SSL) and has no relation to SMB or file sharing protocols.

Full explanation →

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.

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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 bandwidth model where multiple homes in the same neighborhood connect to a common node. During peak evening hours, increased simultaneous usage from neighbors causes congestion on this shared medium, resulting in slower speeds. Late-night tests are fast because fewer users are active, confirming the issue is contention-based rather than a hardware or throttling problem.

Exam trap

CompTIA A+ often tests the misconception that ISP throttling is the default explanation for slow speeds, but the key differentiator here is the time-based pattern, which points to shared medium congestion rather than selective traffic management.

How to eliminate wrong answers

Option A is wrong because overheating typically causes intermittent disconnections or complete modem failure, not a predictable pattern of slow speeds only during peak hours. Option C is wrong because a faulty Ethernet cable would cause packet loss, link drops, or reduced speed consistently, not just during specific times of day. Option D is wrong because ISP throttling is applied to specific traffic types (e.g., video streaming) regardless of time of day, and would not explain why speed tests themselves are fast late at night.

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.

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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

The 802.11ac standard operates exclusively on the 5 GHz band. If the access point's 5 GHz radio is disabled, the laptop cannot see or connect to the Wi-Fi network, even though older 802.11n clients can still connect using the 2.4 GHz radio. This is the most likely cause because the laptop is new and otherwise functional, and the AP is dual-band but may have its 5 GHz radio turned off by default or misconfiguration.

Exam trap

A common trick in exams tests the misconception that 802.11ac is backward compatible with 2.4 GHz, leading candidates to overlook the fact that 802.11ac requires 5 GHz for its core features, and the trap here is that the AP's 5 GHz radio being disabled is the most direct and likely cause, not a driver or antenna issue.

How to eliminate wrong answers

Option A is wrong because a damaged Wi-Fi antenna would affect all wireless connections, not just 802.11ac, and the laptop is new and reported as working elsewhere. Option C is wrong because 802.11ac is backward compatible with 802.11n, and the laptop's drivers would not need to be compatible with the older standard; the issue is the missing 5 GHz band. Option D is wrong because 802.11b-only mode operates on 2.4 GHz and would not prevent an 802.11ac laptop from connecting, as 802.11ac supports 2.4 GHz fallback (though it is not required), and the older 802.11n devices would also likely fail in that mode.

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.

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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.

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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

WPA2-Enterprise with PEAP requires the phone to validate the server's identity using a CA certificate. If the CA certificate is missing or untrusted, the EAP-TLS handshake fails, preventing connection even though the phone can connect to other (non-Enterprise) networks. This is the most common cause of such failures in corporate environments.

Exam trap

The trap here is that candidates confuse PEAP (which requires a server certificate but not a client certificate) with EAP-TLS (which requires both), and incorrectly assume the issue is with the phone's date/time or a faulty adapter, rather than the missing CA certificate needed for the TLS tunnel.

How to eliminate wrong answers

Option A is wrong because the phone connects successfully to other Wi-Fi networks, which proves the Wi-Fi adapter is functional. Option B is wrong because incorrect date/time can cause certificate validation failures, but the question specifies PEAP (not EAP-TLS) and the most likely cause is a missing CA certificate, not a time sync issue; time errors typically affect certificate validity checks but are less common than missing certificates in corporate deployments. Option D is wrong because static IP addressing would affect network-layer connectivity (e.g., DHCP failure), not the 802.1X/EAP authentication phase; the phone would still attempt authentication and fail at a different stage.

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

Since users can communicate with each other but cannot access the internet, the issue is likely with the default gateway. The router's IP is 10.0.0.1, and the subnet mask is 255.255.255.0, so computers must have their default gateway set to 10.0.0.1 to route traffic outside the local subnet. Without a correct default gateway, packets destined for the internet have no route to the router and are dropped.

Exam trap

Cisco often tests the distinction between local connectivity (same subnet) and remote connectivity (different subnet), trapping candidates who confuse DNS or DHCP issues with the fundamental requirement of a default gateway for internet access.

How to eliminate wrong answers

Option A is wrong because setting the DNS server to 10.0.0.1 would not prevent internet access; DNS resolution might fail, but direct IP access would still work, and the symptom is complete loss of internet access, not just name resolution failure. Option B is wrong because if the subnet mask were incorrectly set to 255.255.0.0 on some computers, they would still be able to communicate with each other (since 10.0.0.0/16 includes 10.0.0.0/24) and could potentially reach the internet if the default gateway were correct; the issue here is not subnet mask mismatch. Option D is wrong because a disabled DHCP server would prevent automatic IP assignment, but the question states all computers have IPs in the 10.0.0.0/24 range, meaning they are configured statically or via another method, so DHCP being disabled is irrelevant to the current connectivity problem.

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 known-good USB-C flash drive is also not detected, the issue is not with the power adapter or its wattage. The port's inability to communicate with any USB-C device indicates a physical hardware fault, such as bent or broken pins inside the port, which prevents both power delivery and data transfer.

Exam trap

The trap here is that candidates assume a power adapter that works with other devices must be fine, overlooking that the port itself can be physically damaged, which prevents both power delivery and data communication, not just charging.

How to eliminate wrong answers

Option A is wrong because a completely dead battery would still allow the laptop to power on and detect USB devices when connected to AC power; the battery's health does not affect the port's ability to detect a flash drive. Option C is wrong because the power adapter works with other devices, and insufficient wattage would only affect charging speed or the ability to charge under load, not prevent detection of a data-only USB-C flash drive. Option D is wrong because while BIOS settings can disable a USB-C port, the scenario states the technician tested with a known-good flash drive and it was not detected; a BIOS disable would typically affect all USB-C functionality, but the more common and direct cause given the physical testing is a damaged port, and BIOS settings are rarely the culprit when a port fails to detect any device.

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

The correct answer is C, Personal Area Network (PAN), because wireless mice and keyboards that connect via a USB dongle typically use Bluetooth or a proprietary 2.4 GHz RF protocol, which creates a short-range PAN. The 10-foot range limitation is characteristic of PAN technologies, which are designed for personal device connectivity within a few meters, not for broader network coverage.

Exam trap

The trap here is that candidates confuse the wireless nature of the peripherals with Wi-Fi (a LAN technology), but the short range and personal-device context point specifically to a PAN, not a LAN.

How to eliminate wrong answers

Option A is wrong because a Local Area Network (LAN) covers a larger area like a building or campus and uses protocols such as Ethernet or Wi-Fi, not the short-range RF link used by a wireless mouse/keyboard. Option B is wrong because a Wide Area Network (WAN) spans large geographical areas (e.g., the internet) and relies on technologies like MPLS or leased lines, which are irrelevant to peripheral connectivity. Option D is wrong because a Metropolitan Area Network (MAN) covers a city-sized area and uses technologies like fiber or WiMAX, far exceeding the 10-foot range of a wireless peripheral.

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

The issue is that the tablet's screen is unresponsive to the capacitive stylus. A capacitive stylus works by conducting the electrical charge from your finger to the screen. A fine-point capacitive stylus (Option B) provides a more precise tip while still maintaining the necessary conductivity for the touchscreen to register input, allowing the sales representative to annotate documents effectively.

Exam trap

The trap here is that candidates may confuse a passive stylus with a rubber tip (Option D) as a universal solution for all touchscreens, not realizing that capacitive screens require a conductive stylus, whereas rubber-tip styluses are for resistive screens.

How to eliminate wrong answers

Option A is wrong because a Bluetooth keyboard is an input device for typing, not for annotating or drawing on a touchscreen, and it does not address the screen's unresponsiveness to a stylus. Option C is wrong because a screen protector is a protective layer that does not affect the capacitive touchscreen's ability to register input from a stylus; it may even slightly reduce sensitivity but does not resolve the core issue of stylus incompatibility. Option D is wrong because a passive stylus with a rubber tip is typically designed for resistive touchscreens, not capacitive ones; it lacks the conductive material needed to interact with a capacitive screen, which relies on detecting electrical capacitance from a conductive object.

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

B is correct because `tracert` (or `traceroute` on Linux) uses ICMP Time Exceeded messages to map each hop along the path from source to destination. When a server is reachable locally but not from a remote subnet, `tracert` can pinpoint exactly which router is dropping packets, revealing a routing or firewall issue at that hop.

Exam trap

In CompTIA A+, the distinction between `tracert` (hop-by-hop path discovery) and `pathping` (which adds latency and packet loss statistics over multiple probes) is commonly tested. Candidates may choose `pathping` when the question simply asks for identifying where packets are dropped along the path.

How to eliminate wrong answers

Option A is wrong because `ping -t` (continuous ping) only tests end-to-end reachability and cannot show where packets are dropped along the path; it only confirms whether the destination responds. Option C is wrong because `netstat -r` displays the local routing table, not the path packets take across the network, so it cannot identify where packets are being dropped between subnets. Option D is wrong because `pathping` combines ping and traceroute but takes significantly longer to complete and is not the primary tool for quickly identifying the specific hop where packets are dropped; `tracert` is the immediate choice for hop-by-hop analysis.

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 operates over copper telephone lines, which are susceptible to moisture ingress during rainstorms. Water in the line increases signal attenuation and introduces impedance mismatches, causing the modem to lose synchronization with the DSLAM. This results in frequent disconnections, as the DSL signal degrades below the threshold required for a stable link.

Exam trap

CompTIA A+ often tests the distinction between environmental factors affecting physical-layer media (like copper DSL) versus logical or device-level issues, tempting candidates to blame the modem or ISP when the root cause is line degradation from moisture.

How to eliminate wrong answers

Option A is wrong because a failing power supply typically causes intermittent power loss or complete shutdown, not disconnections specifically correlated with rainstorms. Option C is wrong because router overheating would cause performance issues or reboots regardless of weather, not exclusively during rain. Option D is wrong because ISPs do not throttle connections during storms; throttling is a deliberate bandwidth management policy unrelated to weather events.

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 is the correct accessory because it allows the tablet to simultaneously charge via the hub's PD input while providing a dedicated USB-C data port for the portable SSD. USB 3.1 Gen 2 supports up to 10 Gbps, which is sufficient for fast video file transfers, and PD pass-through ensures the tablet's battery is replenished during use. Without PD pass-through, a standard hub would split power and data, potentially starving the tablet of charge.

Exam trap

CompTIA A+ often tests the misconception that a simple cable or adapter can handle simultaneous charging and high-speed data transfer, when in reality a hub with PD pass-through is required to separate the power and data paths on a single USB-C port.

How to eliminate wrong answers

Option A is wrong because a simple USB-C to USB-C cable provides only a single connection, so the tablet cannot be charged while the SSD is connected (unless the tablet supports USB-C alternate mode with power delivery, but the scenario requires simultaneous charging and data transfer, which a single cable cannot achieve without a hub). Option C is wrong because a USB-C to USB-A adapter would downgrade the connection to USB 3.0 (5 Gbps) or slower, losing the 10 Gbps speed of USB 3.1 Gen 2, and it does not provide any charging capability. Option D is wrong because a wireless SSD with Bluetooth 5.0 has a maximum theoretical throughput of only 2 Mbps, which is far too slow for large video file transfers, and it cannot charge the tablet.

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.

Full explanation →

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 verifies physical cable integrity (continuity and wiring) but does not display link status or speed. It cannot confirm whether the NIC is successfully communicating with the switch at a specific speed.

Why this answer

None of the listed tools can directly verify the link status and speed of a network adapter. Link status and speed are typically indicated by LEDs on the NIC or reported by the operating system (e.g., Windows Network Status or Linux ethtool). A cable tester only checks cable continuity and wiring; a multimeter measures voltage; a toner probe traces cables; a loopback plug tests the NIC's ability to send and receive data but does not indicate link speed or status with a switch.

Therefore, the correct approach would be to check the NIC's LEDs or software configuration, which are not represented in the given options.

Exam trap

Candidates may mistakenly believe that a cable tester can indicate link status or speed. In reality, standard cable testers only check physical cabling. The correct way to verify link status and speed is to observe NIC LEDs or use network configuration tools in the operating system.

How to eliminate wrong answers

Option B (Multimeter) is wrong because it measures electrical properties like voltage, resistance, and continuity, but it cannot verify Ethernet link status or speed, nor can it test for proper twisted-pair wiring or signal integrity. Option C (Toner probe) is wrong because it is used to trace and identify specific cables within a bundle by sending an audible tone, not to test link status or speed. Option D (Loopback plug) is wrong because it is used to test the transmit and receive functionality of a single network interface by sending data back to itself, but it does not verify the link status or speed between the workstation and the switch.

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 the most feasible option because the home is 5 miles from the nearest town with no cable TV or phone line infrastructure. Satellite requires only a clear line of sight to the sky, making it independent of terrestrial cabling. Cable broadband, DSL, and fiber optic all depend on physical infrastructure (coaxial cable, twisted-pair copper, or fiber) that does not extend to this remote location.

Exam trap

The trap here is that candidates assume DSL is feasible because it uses phone lines, but they overlook the distance limitation (typically 18,000 feet) and the fact that no phone line exists at the home, making satellite the only viable option.

How to eliminate wrong answers

Option A is wrong because cable broadband requires a coaxial cable connection from a local cable TV provider, which is not available in a rural area 5 miles from town. Option B is wrong because DSL requires a twisted-pair copper telephone line from a central office, and the home has no phone line; even if it did, DSL range is typically limited to about 3 miles (18,000 feet) from the CO. Option C is wrong because fiber optic requires a physical fiber-optic cable run to the premises, which is cost-prohibitive and not available in remote rural areas without existing infrastructure.

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

1000BASE-T requires all four wire pairs (eight wires) to operate. If one pair is broken or shorted, the link will auto-negotiate down to 100BASE-TX, which only needs two pairs. The green link light indicates a physical connection, but the speed is capped because the PHY detects the missing pair and falls back to the slower standard.

Exam trap

A common mistake is assuming a green link light guarantees Gigabit speed. In CompTIA exams, remember that 1000BASE-T requires all four wire pairs; if any pair fails, the link falls back to 100BASE-TX using only two pairs. The issue is physical, not configuration.

How to eliminate wrong answers

Option A is wrong because Cat5e cable is rated for 1000BASE-T up to 100 meters; the question does not indicate the cable exceeds that length. Option C is wrong because if the NIC were manually set to 100 Mbps, the link would still use two pairs and the green light would be on, but the question asks for the 'most likely' cause given the symptom, and manual configuration is less common than a physical fault. Option D is wrong because if the switch port were configured for 100 Mbps, the link would still be green and the speed would be capped, but the question states the switch 'supports Gigabit' and does not mention a manual configuration; a broken pair is a more typical cause of unexpected speed downgrade.

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

SMB (Server Message Block) is the native protocol used by Windows for file and printer sharing, and it is the correct choice for a file server that needs to be accessible both locally and remotely. SMB supports authentication, encryption (via SMB 3.x), and can be securely tunneled over VPN or through port 445 with proper firewall rules, making it ideal for shared folder access in a mixed network environment.

Exam trap

The CompTIA A+ exam often tests the distinction between protocols designed for file sharing (SMB, NFS) versus file transfer (FTP, HTTP), and the trap here is that candidates may choose FTP because it is commonly associated with 'file access' over the internet, overlooking that SMB is the standard for shared folder access in a Windows-centric environment.

How to eliminate wrong answers

Option A (FTP) is wrong because FTP transfers files in cleartext by default, lacks native encryption, and is designed for file transfer rather than shared folder access with locking and browsing; it also requires separate control and data channels, complicating firewall rules. Option C (NFS) is wrong because NFS is primarily used in Unix/Linux environments for file sharing over a network, but it is not natively supported on Windows without additional services and lacks the integrated authentication and encryption features of SMB for remote access. Option D (HTTP) is wrong because HTTP is a web protocol for serving web pages and APIs, not for direct file sharing with folder browsing, file locking, or network drive mapping; it would require additional webDAV extensions to approximate file server functionality.

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 (point-to-point microwave) provides a dedicated, low-latency link ideal for real-time applications like VoIP and video conferencing. Unlike satellite, it avoids the high latency (500-800 ms) caused by geostationary orbits, and unlike cellular, it offers consistent bandwidth without contention from other users in the area.

Exam trap

CompTIA A+ often tests the misconception that satellite internet is suitable for real-time communications, but the trap here is that candidates overlook the critical latency difference between satellite and fixed wireless, assuming any wireless option is equivalent.

How to eliminate wrong answers

Option A is wrong because satellite internet introduces high latency (typically 500-800 ms round-trip) due to the distance to geostationary orbit, which degrades VoIP and video conferencing quality. Option C is wrong because cellular 4G/5G hotspots rely on shared radio spectrum and can suffer from variable latency, congestion, and signal degradation, making them less reliable for consistent low-latency requirements. Option D is wrong because dial-up offers a maximum speed of 56 kbps, far too slow for VoIP or video conferencing, and uses analog phone lines which are not available in this scenario.

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

The most efficient first step is to check the app's permissions and disable background activity because the new social media app is likely consuming battery by running background services (e.g., location polling, push sync, or wake locks). This approach isolates the problem without removing the app, allowing you to confirm the cause before taking further action. It aligns with the CompTIA A+ troubleshooting methodology of identifying the most probable cause first.

Exam trap

The 220-1201 exam often tests the candidate's ability to choose the least invasive, most targeted step first, and the trap here is that many candidates jump to 'uninstall' or 'factory reset' without first using the built-in permission and background activity controls.

How to eliminate wrong answers

Option A is wrong because immediately uninstalling the app is premature; you should first verify that the app is the cause by adjusting its settings, as uninstalling loses the opportunity to gather diagnostic data. Option C is wrong because a factory reset is a drastic, time-consuming step that wipes all user data and should only be attempted after simpler software-level troubleshooting fails. Option D is wrong because updating the OS is a general maintenance step that does not target the specific symptom of battery drain caused by a newly installed app, and it may introduce other variables.

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 a high-density environment like a conference hall, deploying multiple access points with reduced transmit power and non-overlapping channels (e.g., 1, 6, 11 for 2.4 GHz) minimizes co-channel interference and allows efficient frequency reuse, supporting hundreds of simultaneous connections. This design increases overall capacity by creating smaller, manageable cells that reduce contention and improve throughput per client.

Exam trap

The trap here is that candidates often assume higher transmit power always improves coverage and performance, but in high-density environments, it actually increases co-channel interference and reduces overall network capacity.

How to eliminate wrong answers

Option A is wrong because a single high-power access point would cause severe co-channel interference and oversubscription, as all clients contend for the same channel, leading to poor throughput and connectivity issues. Option C is wrong because disabling the 5 GHz band eliminates the use of less congested, higher-capacity channels with more non-overlapping options (e.g., 24 channels), which is critical for high-density environments. Option D is wrong because WPS (Wi-Fi Protected Setup) is a security vulnerability and does not improve connection speed or capacity; it can actually degrade performance due to its weak PIN-based authentication and potential for brute-force attacks.

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 technician can ping the default gateway (192.168.1.1) but not the server at 192.168.2.10, indicating that Layer 3 connectivity exists within the local subnet but fails beyond it. This points to a routing issue on the default gateway, which likely lacks a route to the 192.168.2.0/24 network. Without that route, the gateway cannot forward packets destined for the server, even though the laptop's IP configuration is correct.

Exam trap

A common trap in CompTIA A+ is the distinction between local connectivity (pinging the gateway) and remote connectivity (pinging a different subnet) — candidates often assume the server is down or DNS is the problem, but the real issue is a missing route on the default gateway.

How to eliminate wrong answers

Option A is wrong because DNS misconfiguration would cause name resolution failures, not the inability to ping a specific IP address; the technician is pinging by IP, not hostname, so DNS is irrelevant. Option B is wrong because while the server could be offline, the most likely cause given the successful gateway ping and the fact that the server is on a different subnet is a routing problem; the question asks for the 'most likely' issue, and a missing route is more probable than a server failure in this context. Option D is wrong because the subnet mask 255.255.255.0 is correct for the 192.168.1.0/24 network, and the laptop can communicate with the gateway, proving the mask is not the issue.

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

The most common cause of VPN connectivity failure after initial setup is incorrect server address or authentication credentials. Since the tablet connects via cellular data (not Wi-Fi), the VPN must be reachable over the internet; a typo in the server hostname/IP or wrong username/password/PSK will prevent the tunnel from establishing, blocking access to internal resources.

Exam trap

The trap here is that candidates may assume a network-level issue (like Wi-Fi or firewall) is the cause, when the real problem is almost always a misconfigured VPN server address or credentials, especially after a fresh setup.

How to eliminate wrong answers

Option A is wrong because the tablet uses cellular data, not Wi-Fi, so enabling Wi-Fi is irrelevant and would not solve a VPN authentication or server address issue. Option C is wrong because while incorrect date/time can cause certificate validation failures, it is not the first check; the question states the VPN was 'set up' and fails to access internal sites, pointing to a configuration error rather than a time sync issue. Option D is wrong because disabling the tablet's firewall is an extreme step that compromises security; the firewall is unlikely to block outbound VPN traffic by default, and the issue is more likely a misconfiguration of the VPN itself.

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

A MAN (Metropolitan Area Network) using a point-to-point wireless bridge is the most appropriate choice because it connects two buildings within the same city (a metropolitan area) without the high cost of fiber. A wireless bridge operating in the 5 GHz or 60 GHz band can provide high-speed, dedicated links over distances up to several miles, making it ideal for sharing internet and internal resources between the two sites.

Exam trap

The trap here is that candidates often confuse MAN with WAN, assuming any connection between buildings requires a WAN, but a MAN is specifically designed for metropolitan-scale connections like this, and a point-to-point wireless bridge is a cost-effective alternative to fiber.

How to eliminate wrong answers

Option A is wrong because a LAN using CAT6 Ethernet cable is limited to a maximum distance of 100 meters (328 feet) per segment, far short of the 2-mile requirement, and cannot span between separate buildings without additional networking equipment. Option B is wrong because a WAN using a satellite link introduces high latency (typically 500-600 ms due to geostationary orbit distance), which is unsuitable for sharing internal resources and high-speed internet, and is also more expensive and complex than a terrestrial wireless bridge. Option D is wrong because a PAN using Bluetooth has a maximum range of about 10-100 meters and is designed for personal device connectivity, not for connecting two office buildings over 2 miles.

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

Cat6a cable is the most appropriate choice because it supports 10GBASE-T (10 Gbps) over twisted-pair copper cabling at distances up to 100 meters, which easily covers the 25-meter distance between racks. Cat6a has a bandwidth of 500 MHz, double that of Cat6, and includes improved alien crosstalk (AXT) specifications required for reliable 10 Gbps transmission. This makes it the standard recommendation for 10 Gbps Ethernet in data center environments.

Exam trap

This question tests the common misconception that Cat6 is sufficient for 10 Gbps at any distance. In reality, Cat6 only supports 10 Gbps up to 37-55 meters depending on cable quality, while Cat6a is the standard for reliable 10 Gbps up to 100 meters.

How to eliminate wrong answers

Option A is wrong because Cat5e cable is rated for only 100 MHz bandwidth and supports a maximum of 1 Gbps (1000BASE-T), not 10 Gbps. Option B is wrong because Cat6 cable, while capable of 10 Gbps, is limited to distances of 37-55 meters under 10GBASE-T due to higher insertion loss and alien crosstalk, making it unreliable for consistent 25-meter links in a rack environment. Option D is wrong because Cat7 cable, though it supports 10 Gbps, uses non-standard GG45 or TERA connectors and is not recognized by TIA/EIA standards; it is overkill and not commonly deployed in standard Ethernet networks, making Cat6a the correct industry choice.

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 authentication using EAP-TLS requires the client to validate the server's certificate against a trusted root CA. If the root CA certificate is missing from the tablet's trusted store, the client cannot verify the RADIUS server's identity, causing the EAP-TLS handshake to fail. This is the most likely issue since the SSID and security settings are already confirmed correct.

Exam trap

The 220-1201 exam often tests the distinction between authentication failures due to missing root CA versus certificate expiration or date/time issues, trapping candidates who assume a simple time sync problem when the real issue is a missing trust anchor.

How to eliminate wrong answers

Option A is wrong because an incorrect date/time would cause certificate validity errors (e.g., 'not yet valid' or 'expired'), but the question states the Wi-Fi profile is correctly configured and the tablets fail to connect—date/time issues typically produce a different error message and are less common than missing root CA. Option C is wrong because WPA2-Personal uses a pre-shared key, not certificates; the scenario explicitly requires 802.1X with certificates, so using WPA2-Personal would be a fundamental security mismatch, not a 'missing configuration' after verifying security settings. Option D is wrong because a static IP conflict would cause IP-layer connectivity issues after association, but 802.1X authentication occurs at Layer 2 before IP assignment; the tablets would fail to even associate if the 802.1X handshake fails, making IP configuration irrelevant at this stage.

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 router's LAN interface IP address because it is the next-hop device that forwards traffic from the local subnet to external networks. Since the router's LAN interface is configured as 192.168.0.1/24, all computers on the 192.168.0.0/24 subnet must use that address as their default gateway to reach the internet via the cable modem.

Exam trap

Cisco often tests the misconception that the default gateway should be the IP of the cable modem or the switch, confusing the roles of Layer 2 and Layer 3 devices in a simple SOHO network.

How to eliminate wrong answers

Option A is wrong because the cable modem operates at Layer 2 (bridging) and does not have a routable IP on the LAN side; computers send traffic to the router, not the modem. Option C is wrong because a switch is a Layer 2 device and does not perform routing; it has no IP address that can serve as a default gateway in this scenario. Option D is wrong because 192.168.0.255 is the broadcast address for the 192.168.0.0/24 subnet, which cannot be assigned as a gateway and is used only for sending packets to all hosts on the local network.

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 (C) is the correct recommendation because it provides a stable, high-speed internet connection using radio waves between a fixed antenna on the client's premises and a nearby tower, without requiring any wired infrastructure. This technology is ideal for rural areas where DSL and cable are unavailable, and it offers lower latency and more consistent performance than satellite, which suffers from high latency due to geostationary orbit distances (approximately 600 ms round-trip time).

Exam trap

The trap here is that candidates often confuse satellite with fixed wireless because both are 'wireless' and suitable for rural areas, but they overlook the critical difference in latency and stability—satellite's high latency makes it unsuitable for real-time applications like video conferencing or online gaming, which the client's 'frequent slowdowns' hint at.

How to eliminate wrong answers

Option A is wrong because DSL relies on existing copper telephone lines, which are wired infrastructure and may not be available or reliable in rural areas. Option B is wrong because cable broadband requires coaxial cable infrastructure from a cable TV provider, which is also wired and often absent in rural locations. Option D is wrong because satellite internet, while not requiring ground-based wired infrastructure, introduces high latency (typically 500–800 ms) due to the long signal travel distance to geostationary orbit, and is prone to weather-related slowdowns and data caps, making it less stable than fixed wireless.

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

The most likely cause is that the wall jack at the new desk is terminated incorrectly, such as a miswired T568A/T568B standard or a broken punch-down connection. Since the computer works at the original jack and the switch port shows no link light, the issue is isolated to the new cabling path, not the NIC or switch configuration. Incorrect termination can cause a physical layer failure, preventing the switch from detecting a carrier signal.

Exam trap

The exam often tests the misconception that a faulty NIC or crossover cable is the cause, but the key clue is that the computer works at one jack and fails at another, isolating the problem to the new cabling path rather than the endpoint or switch configuration.

How to eliminate wrong answers

Option A is wrong because the computer works fine at the original wall jack, proving the NIC is functional. Option B is wrong because modern network interfaces (Gigabit Ethernet and later) support Auto-MDIX, making crossover cables unnecessary for connectivity. Option D is wrong because an administratively down switch port would show a steady amber or no link light, but the scenario states the switch port shows no link light, which is consistent with a physical layer issue, not a configuration state; additionally, if the port were administratively down, it would not affect other devices on the same switch, and the user's computer would not work at the original jack if the port were globally disabled.

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 servers listen on UDP port 67 for incoming client requests (DHCPDISCOVER, DHCPREQUEST). For the server to receive these messages, the firewall must allow inbound traffic to port 67. Without this port open, the server cannot process client requests, and no IP addresses are assigned.

Exam trap

A common misconception is that port 68 (the client port) is the server port, or that DHCP uses TCP instead of UDP, leading candidates to confuse the listening and response ports.

How to eliminate wrong answers

Option B (port 68) is wrong because port 68 is the DHCP client port, used by clients to receive server responses (DHCPOFFER, DHCPACK); it is not the server listening port. Option C (port 53) is wrong because port 53 is used by DNS for domain name resolution, not DHCP communication. Option D (port 123) is wrong because port 123 is used by NTP for time synchronization, not DHCP.

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

This scenario describes a Personal Area Network (PAN) because the devices (thermostat, lights, door lock) communicate directly with each other over a short range of approximately 30 meters without a central hub. This is characteristic of PAN technologies like Zigbee or Z-Wave, which use mesh networking to extend range and allow direct device-to-device communication within a limited area.

Exam trap

Cisco often tests the distinction between PAN and LAN by describing a small number of devices in a home, leading candidates to incorrectly choose LAN because they associate 'local' with any home network, but the key clue is the short range and direct device-to-device communication without a hub.

How to eliminate wrong answers

Option A is wrong because a Local Area Network (LAN) typically covers a larger area (e.g., a building or campus) and relies on a central switch or router for connectivity, not direct device-to-device communication. Option B is wrong because a Wide Area Network (WAN) spans large geographical distances (e.g., cities or countries) and uses leased lines or internet infrastructure, not short-range direct links. Option D is wrong because a Metropolitan Area Network (MAN) covers a city-sized area and requires managed infrastructure like fiber rings, not the 30-meter direct device communication described.

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

The most likely cause is that the camera permission for the app has been denied. On Android, apps must request runtime permissions for sensitive hardware like the camera. If the user or a policy denied this permission, the app cannot access the camera, even if the hardware is functional.

This explains why the app works on other tablets where the permission was granted.

Exam trap

The 220-1201 exam often tests the distinction between hardware failure and permission denial, trapping candidates who assume a hardware defect when the issue is actually a misconfigured software permission, especially in managed device environments.

How to eliminate wrong answers

Option A is wrong because a defective camera would cause the failure on that specific tablet regardless of permission settings, but the app works on other tablets, making hardware failure less likely than a permission issue. Option B is wrong because if the app were incompatible with the Android version, it would likely fail to install or crash on launch, not just fail to open the camera during testing. Option D is wrong because full storage would prevent saving photos, but the app fails to open the camera itself, which is a permission or hardware access issue, not a storage limitation.

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 scope defines the range of IP addresses that a DHCP server can assign to clients on a subnet, along with lease duration and other options. By modifying the DHCP scope, the administrator can set the specific IP address range and configure the lease time to 8 hours, ensuring all devices on that subnet automatically receive addresses from that pool.

Exam trap

CompTIA A+ exams often test the distinction between DHCP scope (which controls IP address assignment and lease time) and DNS zone file (which handles name resolution), leading candidates to confuse the two when the question involves 'automatic IP address' configuration.

How to eliminate wrong answers

Option A is wrong because a DNS zone file maps domain names to IP addresses and does not control IP address assignment or lease times. Option C is wrong because NAT rules translate private IP addresses to public ones for internet access and have no role in DHCP address allocation or lease duration. Option D is wrong because a QoS policy manages network traffic prioritization and bandwidth allocation, not IP address provisioning or lease settings.

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 connections transmit data as light pulses through glass, which travels at approximately 2/3 the speed of light in a vacuum, significantly faster than electrical signals in copper. Additionally, fiber provides dedicated bandwidth per user, eliminating the contention and latency spikes common in cable broadband's shared coaxial architecture. This combination of propagation speed and consistent low latency makes fiber the optimal choice for real-time financial trading where microseconds matter.

Exam trap

CompTIA often tests the misconception that 'faster download speeds' or 'immunity to interference' are the primary reasons for choosing fiber, when the actual exam focus is on latency characteristics and dedicated bandwidth for time-sensitive applications.

How to eliminate wrong answers

Option A is wrong because coaxial cable does not transmit data faster than fiber; fiber-optic uses light signals that propagate at near-light speed, while electrical signals in copper are slower and subject to higher attenuation. Option B is wrong because while fiber is indeed immune to electromagnetic interference, the primary reason for choosing it in this scenario is lower latency, not EMI immunity; the question specifically asks about latency for trading applications. Option C is wrong because cable broadband's higher download speeds are burstable and shared among neighborhood users, leading to variable latency under load, which is unacceptable for real-time trading; fiber provides symmetric, dedicated bandwidth with consistent low latency.

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

Option C is correct because a USB-C to DisplayPort cable supports native DisplayPort Alt Mode over USB-C, which can deliver uncompressed 4K video at 60Hz or higher without conversion. This provides the best video quality for a 4K external monitor, as DisplayPort is designed for high-bandwidth video and supports higher refresh rates and color depths than HDMI in many implementations.

Exam trap

CompTIA often tests the misconception that HDMI is always the best for video quality because it is common on consumer monitors, but DisplayPort actually offers higher bandwidth and native support for 4K at higher refresh rates without compression.

How to eliminate wrong answers

Option A is wrong because VGA is an analog standard limited to 1080p at best, and converting digital USB-C to analog VGA would degrade 4K quality significantly. Option B is wrong because while USB-C to HDMI can support 4K, it typically uses HDMI 1.4 or 2.0 over Alt Mode, which may cap at 30Hz for 4K or require compression, whereas DisplayPort offers native higher bandwidth (e.g., HBR3) for full 4K 60Hz without compression. Option D is wrong because DVI is a single-link or dual-link digital standard that maxes out at 1920x1200 (single-link) or 2560x1600 (dual-link), and cannot handle 4K resolution at all.

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 Local Area Network (LAN) is the correct choice because it connects devices within a limited physical area, such as a single room or office, enabling file sharing and printer access without requiring internet connectivity. LANs typically use Ethernet (IEEE 802.3) or Wi-Fi (IEEE 802.11) to provide high-speed, low-latency communication between the five computers and the printer, making it ideal for this small office setup.

Exam trap

The trap here is that candidates often confuse a PAN with a LAN because both can operate without internet, but a PAN's limited range and device count (typically 1-2 devices) make it unsuitable for a multi-computer office with a printer.

How to eliminate wrong answers

Option A is wrong because a Personal Area Network (PAN) is designed for connecting personal devices over a very short range (typically up to 10 meters), such as Bluetooth or USB, and cannot efficiently support five computers and a printer for file sharing in a single room. Option C is wrong because a Wide Area Network (WAN) spans large geographic areas (e.g., cities or countries) and requires internet or leased lines, which is unnecessary and overkill for a single-room office with no internet requirement. Option D is wrong because a Metropolitan Area Network (MAN) covers a city or campus-sized area, typically using fiber optics or high-speed backbones, and is far too large-scale and costly for a small office with only five devices.

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

The physical misalignment between the screen and the bezel indicates that the LCD panel has physically shifted inside the chassis, which is a common issue in all-in-one PCs where the panel is mounted directly to the frame. This shift causes the touch input coordinates to be offset from the display output, and recalibration cannot compensate for a hardware displacement. The digitizer (touch sensor) is likely still functional, but its alignment relative to the LCD is now incorrect.

Exam trap

CompTIA A+ often tests the distinction between software-based calibration issues and hardware displacement, where candidates mistakenly choose driver or firmware problems when the symptom is a visible physical misalignment.

How to eliminate wrong answers

Option A is wrong because a corrupted touchscreen driver would typically cause complete unresponsiveness, erratic behavior, or error messages, not a consistent offset that persists after calibration. Option B is wrong because a failing digitizer would produce dead zones, ghost touches, or no input at all, not a uniform misalignment between the screen and bezel. Option D is wrong because a firmware update addresses software-level bugs or compatibility issues, not a physical shift of the LCD panel within the chassis.

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 HTTPS to encrypt print jobs and communications. Port 631 is the standard port for IPP, and when secured with TLS/SSL, it still uses port 631 but over HTTPS. This is defined in RFC 3510, which specifies how IPP operates over TLS, making port 631 the correct choice for secure IPP printing.

Exam trap

The trap here is that candidates often confuse port 443 (HTTPS) as the secure printing port, but the exam tests the specific IANA assignment for IPP, which is port 631, even when secured with TLS.

How to eliminate wrong answers

Option A is wrong because port 9100 is used by HP JetDirect and other raw TCP/IP printing protocols, which do not provide encryption or secure printing capabilities. Option B is wrong because port 515 is the standard port for the Line Printer Daemon (LPD) protocol, which is an older, unencrypted printing protocol and does not support secure IPP. Option C is wrong because port 443 is the default port for HTTPS web traffic, but secure IPP printing specifically uses port 631 with TLS, not port 443; while both use HTTPS, the port number for IPP is standardized as 631.

Full explanation →

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