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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Virtualization and Cloud Computing | 11% | - Cloud computing concepts
|
| Topic 2: Mobile Devices | 15% | - Mobile device hardware and components
|
| Topic 3: Hardware and Network Troubleshooting | 29% | - Troubleshooting methodology
|
| Topic 4: Hardware | 25% | - PC hardware components
|
| Topic 5: Networking | 20% | - Network fundamentals
|
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NEW QUESTION # 570
A user's tablet screen is unresponsive to touch. The device does not show any signs of physical damage, and a system reset does not resolve the issue. Which of the following should a technician replace?
Answer: C
Explanation:
A tablet's display is made of two key parts that work together: the LCD (or OLED) that shows the image, and the digitizer that detects touch input. If the screen image looks normal but the device does not respond to taps, swipes, or gestures, the most likely failed component is the digitizer (or the digitizer layer/cable). The digitizer is a transparent sensor grid that converts touch into signals the system can interpret. When it fails, the tablet may still power on and show a clear picture, but touch will not register at all or will behave erratically.
Because the device shows no physical damage and a system reset does not fix the issue, this points away from a software glitch and toward a hardware input failure. Replacing the LCD screen is typically indicated when you see display problems such as no image, distorted colors, flickering, dead pixels, or backlight issues-not purely touch failure. A battery problem would affect power/charging, not touch responsiveness. A motherboard replacement is far more invasive and not the most likely first hardware fix for a touch-only failure. Therefore, the correct component to replace is the digitizer.
NEW QUESTION # 571
An organization upgrades all desktops to Windows 11 and must ensure protection from malicious software at startup. Which option should be enabled?
Answer: A
Explanation:
CompTIA A+ explains that Secure Boot is a UEFI security feature that prevents unauthorized or malicious bootloaders, rootkits, and unsigned OS loaders from starting during the boot process. Secure Boot verifies digital signatures on the OS and critical boot files before allowing startup, ensuring the system has not been tampered with.
TPM (Option A) provides encryption key storage and is used for BitLocker, but alone does not block malicious bootloaders. HSMs (Option B) are enterprise cryptographic devices, not PC boot protection features. BIOS passwords (Option D) restrict access to configuration but do not protect against malicious boot- level malware.
Windows 11 specifically requires Secure Boot, making it the correct protection mechanism for preventing startup-level malware.
Thus, Secure Boot is the proper choice.
NEW QUESTION # 572
The Chief Information Security Officer asks a technician to inventory desktop PCs to determine which ones meet the requirements for Secure Boot. The technician must also configure the PCs for non-user-controllable keys. Which of the following are necessary to meet the enhanced security requirements? (Select two).
Answer: B,C
Explanation:
Comprehensive and Detailed Explanation From Exact Extract (Aligned With CompTIA A+ 220-1201 Study Guide) To run Secure Boot, the system must have:
โ UEFI firmware (not legacy BIOS)
Secure Boot is a UEFI feature that validates bootloaders using digitally signed keys stored in secure firmware.
โ TPM (Trusted Platform Module)
The TPM stores cryptographic keys in tamper-resistant hardware, enabling secure key management that cannot be altered by normal users.
CompTIA materials describe TPM as essential for enhanced platform security and for storing validated boot keys when Secure Boot is enabled.
Together, UEFI + TPM provide:
Verified boot loader
Hardware-level key protection
Prevention of unauthorized OS tampering
Non-user-controllable secure key storage
Why the other options are incorrect
A . VDI - Virtual desktops; unrelated to Secure Boot hardware requirements.
B . BIOS password - Helps protect firmware settings but is not required for Secure Boot.
E . Disabled boot drive - Irrelevant to Secure Boot.
F . USB permissions - Not part of Secure Boot requirements.
NEW QUESTION # 573
Which of the following wireless frequency ranges involves the use of channels 1, 6, and 11?
Answer: A
Explanation:
The 2.4GHz wireless frequency range uses channels 1, 6, and 11 as the non-overlapping channels to minimize interference and ensure reliable Wi-Fi communication.
NEW QUESTION # 574
Which of the following is used to verify if a NIC port can send and receive data?
Answer: C
Explanation:
A loopback plug is used to test a network interface card (NIC) port by sending a signal out of the port and back into the same port, verifying that the NIC can send and receive data properly.
This is a common diagnostic tool when troubleshooting network connectivity issues on individual devices.
NEW QUESTION # 575
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