Try 10 focused CompTIA A+ 220-1201 questions on Hardware, with explanations, then continue with IT Mastery.
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| Field | Detail |
|---|---|
| Exam route | CompTIA A+ 220-1201 |
| Topic area | Hardware |
| Blueprint weight | 25% |
| Page purpose | Focused sample questions before returning to mixed practice |
Use this page to isolate Hardware for CompTIA A+ 220-1201. Work through the 10 questions first, then review the explanations and return to mixed practice in IT Mastery.
| Pass | What to do | What to record |
|---|---|---|
| First attempt | Answer without checking the explanation first. | The fact, rule, calculation, or judgment point that controlled your answer. |
| Review | Read the explanation even when you were correct. | Why the best answer is stronger than the closest distractor. |
| Repair | Repeat only missed or uncertain items after a short break. | The pattern behind misses, not the answer letter. |
| Transfer | Return to mixed practice once the topic feels stable. | Whether the same skill holds up when the topic is no longer obvious. |
Blueprint context: 25% of the practice outline. A focused topic score can overstate readiness if you recognize the pattern too quickly, so use it as repair work before timed mixed sets.
These questions are original IT Mastery practice items aligned to this topic area. They are designed for self-assessment and are not official exam questions.
Topic: Hardware
A home user is organizing and labeling cables for a small office setup that includes a desktop PC, a VoIP/analog phone adapter connected to a telephone wall jack, and a cable modem from the ISP.
Which TWO of the following cable uses should the technician AVOID because they use the wrong connector for the device? (Select TWO.)
Options:
A. Use an RJ11 connector to connect a modem’s Ethernet LAN port to a router’s WAN port.
B. Use an RJ45 connector to plug a patch cable into a desktop’s Ethernet NIC.
C. Use an F-type coaxial connector to connect the cable from the wall to the cable modem’s coax input.
D. Use an F-type coaxial connector, with a simple passive adapter, to plug a cable directly into an Ethernet switch’s RJ45 port.
E. Use an RJ11 connector to connect a corded phone to a telephone wall jack.
Correct answers: A and D
Explanation: This question tests recognition of where common connectors—RJ45, RJ11, and F-type—are appropriately used in a small office or home network.
RJ45 is the normal connector for Ethernet networking over twisted-pair cabling, used by desktops, switches, and routers. RJ11 is the common connector for analog telephone lines. F-type coaxial connectors are used for cable TV and cable Internet connections between the wall jack and the cable modem or set-top box.
Two of the options describe trying to use phone or coax connectors where Ethernet over twisted pair is required. Those scenarios are incorrect and should be avoided because they either will not work or may damage the equipment. The other options show proper, real-world uses of each connector type.
Topic: Hardware
Which statement BEST describes how CPU socket types affect motherboard and processor compatibility?
Options:
A. The CPU socket is mainly a cosmetic shape that can be adapted with simple brackets to support both Intel and AMD processors on the same motherboard.
B. The CPU socket only determines the speed of RAM that can be installed; any modern CPU can be used as long as the RAM matches the motherboard.
C. The CPU socket type only affects how a cooler is mounted and does not influence which CPUs the motherboard can use.
D. The CPU socket defines the physical and electrical interface on the motherboard, so only processors designed for that exact socket type and vendor will fit and operate correctly.
Best answer: D
Explanation: A CPU socket is the standardized physical and electrical connection point between the processor and the motherboard. It defines the pin layout (or contact pads), voltage, and signaling required by that family of CPUs. Because of this, only processors designed for a specific socket type and vendor will work in that socket.
Intel and AMD each use their own socket families (for example, different pin counts and arrangements), and these are not interchangeable. Even within a single vendor, different socket generations are usually incompatible with each other. When building or upgrading a system, a technician must match the CPU model to the exact socket type supported by the motherboard.
Other components, like RAM and coolers, are influenced by the socket and chipset, but the fundamental role of the socket is to ensure that only compatible processors can be installed safely and function correctly.
Topic: Hardware
A user reports that every time their desktop PC starts, it briefly shows a network boot message and then fails with a “No boot device found” error. You confirm in the UEFI setup that the SSD with Windows installed is detected and passes diagnostics. The current UEFI boot options screen shows:
Boot Priority:
1. IPv4 Network
2. USB Storage Device
3. Windows Boot Manager (SSD)
4. SATA0: 512GB SSD
Which UEFI configuration change should the technician make to BEST resolve this issue?
Options:
A. Enable PXE boot support on the network interface
B. Disable Secure Boot in the UEFI security settings
C. Move Windows Boot Manager (SSD) to the top of the boot priority list
D. Change the SATA controller mode from AHCI to IDE/Legacy
Best answer: C
Explanation: The symptom is that the PC attempts a network boot and then reports no boot device, even though the SSD is detected and healthy. This indicates that the boot order in UEFI is incorrect. The UEFI screenshot shows that the IPv4 Network option is listed before Windows Boot Manager on the SSD, so the firmware tries the network and fails before attempting to load the OS from the SSD.
Correcting the boot priority so that Windows Boot Manager (which points to the installed OS on the SSD) is first ensures the system will boot directly from the SSD instead of the network. This is a typical BIOS/UEFI configuration task for resolving boot device errors when hardware is functioning properly.
Topic: Hardware
A user brings a desktop PC from the U.S. (120VAC) to Germany (230VAC). The power supply has a manual 115/230V switch that was left at 115V. When the PC was plugged directly into the wall, there was a loud pop, and now the system shows no lights or fans, even with a known-good power cable and outlet. Which action is the MOST appropriate to restore safe operation?
Options:
A. Replace the motherboard, because the main system board is the most likely component to fail from incorrect input voltage
B. Replace the power supply, and ensure the new unit supports 230VAC input (or is set to 230V) before plugging it in again
C. Flip the existing power supply switch to 230V and immediately try powering the system on again
D. Use a plug adapter to fit the German outlet but keep using the same PSU configuration
Best answer: B
Explanation: In this scenario, a desktop PC designed for 120VAC was plugged into a 230VAC outlet while the PSU’s manual input selector remained at 115V. This effectively applies about double the expected AC voltage to the power supply. The loud pop and complete loss of power (no LEDs, no fans) even with a known-good cable and outlet strongly indicate that the power supply has failed internally.
Because the PSU is the first component that receives AC power, it is designed to protect downstream components as much as possible by failing first. The safest and most appropriate fix is to replace the power supply with one that supports the local mains voltage (230VAC) and to ensure the input selector or auto-ranging feature is correctly set before plugging the system in again. Simply flipping the switch after the damage, or using only a plug adapter without handling the voltage difference, is unsafe and will not reliably restore operation.
Topic: Hardware
A technician is cabling a new row of office cubicles for desktop PCs that will all use 1Gb Ethernet. Each run is under 70 meters, and the business wants to keep costs low while still meeting performance needs. They decide to install Cat 5e instead of Cat 6. Which cabling principle does this choice BEST demonstrate?
Options:
A. Reducing electromagnetic interference by always using shielded twisted-pair cable
B. Overbuilding the cabling plant to support future 40Gb Ethernet upgrades
C. Extending Ethernet cable lengths beyond typical maximum distance limits
D. Selecting the lowest cable category that still supports the required network speed
Best answer: D
Explanation: Twisted-pair Ethernet cable categories, such as Cat 5e and Cat 6, are chosen based on the speeds and environments they are intended to support. For typical office runs under 100 meters, both Cat 5e and Cat 6 can handle 1Gb Ethernet. Cat 6 (and higher) is generally used when you need better performance margins or support for higher speeds, such as 10Gb, on shorter copper runs.
In this scenario, the requirement is only 1Gb Ethernet with cost sensitivity, and all cable runs are well within standard distance limits. Because Cat 5e already supports 1Gb for typical office distances, selecting Cat 5e instead of Cat 6 is an example of choosing the lowest cable category that still meets all performance requirements, thus controlling costs without sacrificing needed speed or reliability.
Topic: Hardware
Which statement BEST describes the role of the inverter in older CCFL‑backlit laptop displays and a common symptom when it fails?
Options:
A. It converts the video signal from the GPU into digital form, and failure causes the laptop to show no image at all, even with an external monitor.
B. It converts low‑voltage DC to high‑voltage AC to power the CCFL backlight, and failure causes a very dim or flickering screen even though an image is still faintly visible.
C. It regulates power only for LED backlights, and failure causes random colored lines to appear across the screen.
D. It provides power to the laptop’s entire motherboard, and failure prevents the system from powering on at all.
Best answer: B
Explanation: In older laptops that use CCFL (cold cathode fluorescent lamp) backlighting, the inverter’s purpose is to take the low‑voltage DC from the laptop’s power system and convert it into the high‑voltage AC needed to drive the CCFL tube in the display. When the inverter starts to fail, the LCD panel can still generate an image, but without proper backlight power that image is very hard to see.
Typical inverter failure symptoms include a screen that is extremely dim (readable only with a flashlight at an angle) or a backlight that intermittently flickers or cuts out, while the laptop itself is otherwise working normally. Modern LED‑backlit displays usually use different driver circuitry and may not have a separate CCFL‑style inverter board, so this symptom pattern is specifically associated with older CCFL‑backlit panels.
Topic: Hardware
Which TWO of the following statements about DDR3, DDR4, and DDR5 RAM are NOT correct? (Select TWO.)
Options:
A. A motherboard’s memory slots are designed for a specific DDR generation, so the RAM you install must match the DDR type the motherboard supports.
B. DDR3, DDR4, and DDR5 DIMMs use different key notch positions, which prevents you from inserting the wrong generation into a slot without forcing it.
C. You can mix DDR3 and DDR4 modules in the same motherboard to increase total RAM, as long as you keep each generation in separate memory channels.
D. A DDR4 module can be installed and used in a DDR3 slot as long as it appears to fit without applying much force.
E. DDR4 and DDR5 are both types of SDRAM commonly used as main system memory in modern desktop and laptop computers.
Correct answers: C and D
Explanation: DDR (Double Data Rate) SDRAM comes in distinct generations such as DDR3, DDR4, and DDR5. Each generation changes not only speed and internal design, but also the physical layout and electrical standards. To prevent accidental damage, the industry uses different key notch positions on the DIMMs so the wrong generation will not correctly align with a slot designed for another generation.
Because of these physical and electrical differences, a motherboard is built to support one specific DDR generation for its memory slots. You must match the DDR type listed in the motherboard specifications; installing a different generation is not supported and should not be forced. Modern systems commonly use DDR4 and DDR5 SDRAM as their main system memory, but these generations still are not interchangeable or mixable within a single standard consumer motherboard.
Any statement that suggests you can install DDR4 into DDR3 slots, or mix different DDR generations together in the same motherboard, is misleading and should be treated as incorrect on an exam and in real-world practice.
Topic: Hardware
A user connects a desktop PC to a new 4K monitor with built‑in speakers using a DVI‑D to HDMI cable from the PC’s DVI‑D output to the monitor’s HDMI input. The image is limited to 1920×1080, and no sound plays from the monitor speakers. Both the PC and the monitor have DisplayPort ports, and the PC does not have USB‑C. The user wants 4K video and audio over a single cable. Which should the technician do next to BEST meet this requirement?
Options:
A. Switch to a VGA cable between the PC and the monitor
B. Continue using the DVI‑D to HDMI cable but lower the resolution to 1280×720
C. Purchase a USB‑C to HDMI adapter and use HDMI between the PC and the monitor
D. Replace the current cable with a DisplayPort cable connected directly between the PC and the monitor
Best answer: D
Explanation: In this scenario, the user is limited to 1920×1080 resolution and no audio because the current connection originates from a DVI‑D port. Standard DVI‑D is a digital, video‑only interface and does not carry audio, and many DVI implementations are limited in maximum resolution compared to newer interfaces.
Both the PC and the monitor have DisplayPort ports. DisplayPort is a modern digital interface that supports high resolutions such as 4K and can carry both video and audio over a single cable. By replacing the DVI‑to‑HDMI connection with a direct DisplayPort‑to‑DisplayPort cable, the technician removes the DVI limitation and enables both 4K video and audio using one cable, which meets the user’s requirement.
Other options either still rely on video‑only connections (DVI or VGA), do not exist on the PC (USB‑C), or do nothing to address the lack of audio and limited resolution.
Topic: Hardware
An office wants to prevent confidential documents from sitting unattended on printer output trays. They decide that print jobs should be held until the user arrives at the device and authenticates with an ID badge, at which point the job is released. Which printer security feature BEST implements this practice?
Options:
A. Secure print (pull printing) with user authentication
B. High-capacity output tray
C. Print job spooling on a central server
D. Automatic duplex (double-sided) printing
Best answer: A
Explanation: The scenario focuses on protecting sensitive documents from being left on a shared printer where anyone could see or take them. The key requirement is that the print job should not appear on the output tray until the authorized user is physically present and authenticates, such as by swiping an ID badge.
This is exactly what secure print (pull printing) provides. With secure print, jobs are held on the printer or a print server in a secure queue. The job is only released when the user authenticates at the device (badge, PIN, username/password). This directly supports document confidentiality at the printer by preventing unattended output.
Other features like duplex printing, larger trays, or generic spooling may improve efficiency or convenience, but they do not enforce user authentication at the device or control when the document is actually printed, so they do not solve the security problem described.
Topic: Hardware
Which TWO statements about routine maintenance on laser printers are correct? (Select TWO.)
Options:
A. It is best practice to use a standard household vacuum cleaner to remove spilled toner from inside the printer.
B. Follow the manufacturer’s recommended page-count intervals when replacing fusers or maintenance kits.
C. Once a laser printer is installed, it never needs calibration unless print quality becomes completely unreadable.
D. You should lightly spray oil or lubricant on the fuser rollers during each cleaning to reduce wear.
E. Power off the printer and use a toner-safe, ESD-safe vacuum or lint-free cloth when cleaning inside the device.
Correct answers: B and E
Explanation: Routine maintenance on laser printers focuses on safely replacing consumables and components at the right time and cleaning the device without causing damage. Manufacturers specify maintenance intervals, such as after a certain number of printed pages, for parts like fusers and rollers to prevent failures and maintain print quality. Safe cleaning techniques use toner-safe tools and proper shutdown procedures so that toner and sensitive electronics are not harmed.
Technicians should avoid unsafe practices such as using household vacuums, adding lubricants to the fuser, or ignoring calibration. Following vendor guidelines and using the correct tools extends printer life and prevents poor print quality or hardware damage.
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