220-1101 exam dumps: 471 free CompTIA A+ Core 1 practice questions

Correct answer: B

• A. Incorrect.

  Incorrect. Although third-party glass-only repairs exist for some phones, this option conflicts with the scenario because the manufacturer specifies that the glass, digitizer, and OLED are fused into one assembly. Attempting to separate laminated layers increases the chance of damaging the OLED, touch layer, frame, or seals. This is not the most reliable or lowest-risk repair.

• B. Correct.

  Correct. When the manufacturer documents the screen components as a single sealed assembly, best practice is to replace the entire display assembly using the approved procedure. This matches the scenario’s requirement for the most reliable repair and minimizes the risk of additional damage to the display, touch layer, and device sealing components.

• C. Incorrect.

  Incorrect. Recalibration does not fix physically cracked glass, and a screen protector is only cosmetic mitigation, not a hardware repair. Since the phone has physical damage and the company wants a proper replacement technique, this does not address the failed component.

• D. Incorrect.

  Incorrect. A battery replacement is unrelated to a cracked front glass/display assembly unless there are separate symptoms indicating battery failure. This distractor reflects a common mistake of replacing unrelated parts after a drop instead of diagnosing the specific damaged assembly.

Correct answer: A

• A. Correct.

  Correct. A laptop that powers off unexpectedly when disconnected from AC despite showing remaining charge is a classic sign of a failing battery that can no longer provide stable output under load. Given the age of the laptop and the symptom pattern, the most appropriate first action is to replace the battery with a manufacturer-approved unit. CompTIA A+ expects technicians to recognize degraded battery health as a common hardware issue and to use supported replacement parts for safety and compatibility.

• B. Incorrect.

  Incorrect. Although power management and drivers can affect battery life, a video driver issue would not typically cause an immediate shutdown at a reported 40% charge only when AC power is removed. This option reflects a common misconception that any battery-related symptom must be caused by software optimization rather than battery failure.

• C. Incorrect.

  Incorrect. Sleep and hibernation settings control low-power behavior, but they do not cause the system to lose power suddenly when the battery is unable to sustain the laptop. Someone might choose this if they confuse an unexpected shutdown with an incorrect power-plan event, but the system's dependence on AC power points to a hardware battery problem.

• D. Incorrect.

  Incorrect. A full system recovery is too invasive and not an appropriate first troubleshooting step for symptoms that strongly indicate battery degradation. While software corruption can cause instability, it would not normally make the laptop shut off specifically when external power is removed while it otherwise operates normally on AC.

Correct answer: B

• A. Incorrect.

  Incorrect. Sticky Keys affects modifier key behavior such as Shift, Ctrl, Alt, and Windows key combinations. It does not cause letter keys like U, I, and O to produce numbers. This is a plausible distractor because accessibility settings can affect keyboard behavior, but not in this specific way.

• B. Correct.

  Correct. Many laptops use an embedded numeric keypad that shares keys with part of the letter area, commonly including U, I, O, J, K, L, and M. When Num Lock is enabled, those keys can enter numbers instead of letters. The fastest first step is to toggle Num Lock, often using a dedicated Num Lock key or an Fn key combination.

• C. Incorrect.

  Incorrect. A driver issue is less likely because the symptom is specific and consistent with an enabled embedded numeric keypad, and the external USB keyboard works normally. Reinstalling the driver is a more time-consuming troubleshooting step and not the best first action.

• D. Incorrect.

  Incorrect. Hardware replacement is premature. The symptom strongly suggests a keyboard mode setting rather than physical key failure, especially since multiple related keys are affected in a predictable pattern. Best practice is to rule out simple configuration issues before replacing components.

Correct answer: A

• A. Correct.

  Correct. Adding a second DIMM with the same capacity, type, and speed as the existing DDR4-2666 module is the best way to increase RAM capacity while also enabling dual-channel operation on a typical motherboard when installed in the paired slot. On many boards, the correct paired slots are color-matched or documented as A2 and B2 when using two modules. This improves multitasking performance and memory bandwidth without replacing the existing RAM.

• B. Incorrect.

  Incorrect. DDR3 and DDR4 are not cross-compatible. They use different signaling, voltages, and keying notches, so a DDR3 module will not fit or function in a DDR4 motherboard slot. A user might choose this because it offers more capacity, but the memory type must match what the motherboard supports.

• C. Incorrect.

  Incorrect. Moving the existing module to a different slot without adding more memory does not address the user's need for better multitasking performance. The system would still have only 8 GB of RAM and would still operate in single-channel mode with one module installed.

• D. Incorrect.

  Incorrect. Although some systems can downclock mixed-speed RAM to the slowest installed module, installing the second module in A1 is typically not the correct paired slot for dual-channel when the first module is already in A2. Also, buying DDR4-3200 does not guarantee the system will run at 3200 MT/s; it will usually operate at the motherboard and slowest module's supported speed, in this case likely 2666 MT/s.

Correct answer: A

• A. Correct.

  Correct. A SATA SSD typically delivers much better random read/write performance than a mechanical HDD because it has no spinning platters or actuator arm. This means seek time and rotational latency are dramatically lower, which is why operating systems, applications, and frequently accessed files open much faster. In real-world desktop use, this is usually the primary reason users notice a major improvement after replacing an HDD with an SSD.

• B. Incorrect.

  Incorrect. A storage upgrade does not increase the CPU's clock speed. Faster storage can reduce the time the CPU waits for data, making the system feel more responsive, but it does not change processor frequency or directly boost CPU performance.

• C. Incorrect.

  Incorrect. This describes HDD technology, not SSD technology. HDDs use magnetic platters, while SSDs use flash memory. A larger cache on an HDD can help in some workloads, but it does not remove the mechanical delays that make HDDs slower than SSDs for booting and launching applications.

• D. Incorrect.

  Incorrect. SSDs do not replace the function of system RAM or caching. The operating system still uses RAM and cache mechanisms to improve performance. Data is not loaded directly into the processor from the SSD in the way this option suggests.

Correct answer: B

• A. Incorrect.

  Incorrect. A damaged or misconfigured TCP/IP stack would more likely affect IP communication after association, not cause very weak signal range that improves only when the laptop is close to the access point. The laptop can already see networks, which points more toward an RF or antenna-related problem than a protocol stack issue.

• B. Correct.

  Correct. Laptop wireless cards commonly use one or two tiny antenna leads that must be firmly connected to the card's main/aux terminals. If these leads are loose, disconnected, or swapped in a way that affects performance, the system may still detect networks but have very poor range and unstable connectivity. This is a common post-repair issue when replacing internal Wi-Fi cards.

• C. Incorrect.

  Incorrect. Lowering security from WPA2 to WEP is not an appropriate fix for weak signal or poor range, and WEP is obsolete and insecure. Security mismatch issues typically prevent successful authentication rather than causing the connection to work only when very close to the access point.

• D. Incorrect.

  Incorrect. Bluetooth and Wi-Fi can coexist on combo cards, and disabling Bluetooth is not the primary fix for dramatically reduced Wi-Fi range after a card replacement. While 2.4 GHz interference can occur in some cases, the timing of the problem immediately after hardware replacement strongly suggests an installation issue instead.

• E. Incorrect.

  Incorrect. IP addressing affects network communication after a wireless link is established. It does not correct poor reception, low signal strength, or a connection that is only usable at very short distances from the access point.

Correct answer: A

• A. Correct.

  Correct. A privacy screen filter narrows the viewing angle of the display so people standing to the side cannot easily read the contents on the screen. This is a standard physical privacy control for workstations in public or semi-public areas such as reception desks, nursing stations, and check-in counters.

• B. Incorrect.

  Incorrect. A Kensington cable lock helps physically secure the computer to a desk or other fixed object to deter theft. It does not prevent nearby people from viewing sensitive information displayed on the monitor.

• C. Incorrect.

  Incorrect. A biometric reader helps control logical access by verifying a user's identity, such as through a fingerprint. While it can improve authentication security, it does not address shoulder surfing or visual exposure of on-screen patient information.

• D. Incorrect.

  Incorrect. A USB port blocker helps prevent unauthorized use of USB ports, such as connecting removable storage or peripherals. This can support device security, but it does not limit who can see the display in a public area.

Correct answer: A

• A. Correct.

  Correct. Enrolling multiple fingers is a practical best practice for fingerprint authentication, especially for users whose primary fingerprint may be hard to read because of wear, cuts, dirt, or dry skin. This keeps biometric authentication in use while improving usability and availability without fundamentally weakening security.

• B. Incorrect.

  Incorrect. Shared generic passwords would reduce accountability and weaken security. Biometrics are intended to uniquely identify or verify individual users, while shared credentials make auditing and nonrepudiation much harder.

• C. Incorrect.

  Incorrect. Account lockout settings are related to repeated failed authentication attempts, but they do not address the root problem: poor fingerprint readability. Also, lockout thresholds are typically associated with password policies and do not improve biometric capture quality.

• D. Incorrect.

  Incorrect. RFID proximity badges are not biometrics. They are a possession factor, not an inherence factor. While badges may be useful in some environments, this option is based on a misunderstanding of authentication factor types.

Correct answer: A

• A. Correct.

  Correct. Near-field communication works only at very short range, typically a few centimeters. This makes it useful for quick tap-to-pair or tap-to-configure tasks while reducing accidental connections to nearby devices. In a crowded warehouse, requiring close proximity helps ensure the technician pairs with the intended scanner.

• B. Incorrect.

  Incorrect. Standard Bluetooth discovery can work over much longer distances than NFC and is more likely to show multiple nearby devices in a crowded environment. NFC is commonly used to simplify or initiate Bluetooth pairing, not as a feature that becomes useful only after a long-range Bluetooth connection is already made.

• C. Incorrect.

  Incorrect. Infrared requires line-of-sight and is a different technology from near-field communication. Modern smartphones used in enterprise environments typically rely on NFC for close-range pairing, not IR ports for this task. Choosing this option reflects confusion between short-range wireless technologies.

• D. Incorrect.

  Incorrect. NFC does not operate by reading devices over a Wi-Fi LAN. It is a close-range radio technology used for small data exchanges such as identification, authentication, or initiating another connection method. Joining a Wi-Fi network is unrelated to the phone's near-field scanner feature.

Correct answer: A

• A. Correct.

  Correct. Many desktop Wi-Fi adapters use RP-SMA connectors for removable antennas, and using the correct connector type is important to avoid incompatibility or damage. After confirming the proper antenna connection, improving antenna placement by moving it away from metal desks, cabinets, and other obstructions is a practical first step because metal can attenuate and reflect RF signals, reducing signal quality and causing disconnects.

• B. Incorrect.

  Incorrect. SMA and RP-SMA are not interchangeable even though they look similar. Their center pin/socket arrangement differs, so forcing the wrong connector can damage the antenna or adapter and will not provide a proper RF connection. This is a common misconception because the threaded shells appear alike.

• C. Incorrect.

  Incorrect. A Wi-Fi device should not be operated without the required antenna attached, and changing access point power does not address the immediate issue of a missing or mismatched client antenna. Also, transmit power changes may not solve poor client-side reception caused by bad antenna placement or connector mismatch.

• D. Incorrect.

  Incorrect. On many Wi-Fi adapters, two external antenna ports are used for Wi-Fi functions such as MIMO/diversity, not because one is dedicated to Bluetooth. While some combo cards support Bluetooth separately, the visible dual antenna ports on a desktop Wi-Fi bracket are typically both for the WLAN radio system. Using only one antenna can reduce performance and reliability.