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| Section | Weight | Objectives |
|---|---|---|
| Networking | 20% | - Network configurations - IP addressing and subnetting basics - Network connectivity - Network protocols and services - Network hardware and devices - Network troubleshooting |
| Hardware and Network Troubleshooting | 26% | - Printers and multifunction devices - Troubleshooting methodology - Common symptoms and root causes - Mobile device troubleshooting - Network troubleshooting - Hardware troubleshooting |
| Mobile Devices | 15% | - Mobile device management (MDM) - Mobile device configuration - Mobile device synchronization - Mobile device troubleshooting - Cellular connectivity and settings |
| Hardware | 27% | - Power supplies and connectors - RAM types and installation - BIOS/UEFI and firmware - CPU and expansion cards - Peripheral devices and connections - PC hardware and peripherals - Storage devices (HDD, SSD, NVMe) |
| Virtualization and Cloud Computing | 12% | - Cloud concepts and models (IaaS, PaaS, SaaS) - Cloud and virtualization troubleshooting - Virtualization fundamentals - Virtual machine concepts - Cloud connectivity and configuration |
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NEW QUESTION # 637
Which of the following should a technician check when the display of a computer Is flickering?
Answer: C
Explanation:
Display flickering is most commonly caused by an incorrect or unstable refresh rate setting. The refresh rate is the number of times per second (measured in Hz) that a monitor redraws the image. CompTIA A+ teaches that LCD, LED, and especially older CRT displays can exhibit flickering if the refresh rate is set too low or to a value unsupported by the monitor.
For modern displays, typical refresh rates are 60 Hz, 75 Hz, 120 Hz, 144 Hz, and higher. If the refresh rate is mismatched-such as manually set above the monitor's rated capability-the screen may flicker, blank intermittently, or show instability. Similarly, if the refresh rate is set too low, the user may perceive visible flicker, eye strain, or shimmering on the display.
Checking and adjusting the refresh rate through the operating system's display settings (or GPU control panel) is the first and most direct troubleshooting step for flickering issues.
The LCD type (A) has no bearing on flickering once installed. Screen resolution (C) affects clarity and scaling but does not cause flicker by itself. Pixel density (D) is a hardware characteristic and cannot cause flickering.
Thus, the correct component to check when diagnosing display flicker is the refresh rate.
NEW QUESTION # 638
A technician is setting up a new multifunction device to be used over a shared network connection. Copier functions need to be restricted to only office employees. Which of the following should the technician perform after configuring the device to use a print server that exists on the domain?
Answer: D
Explanation:
User authentication allows access to device functions (like printing and copying) to be restricted to authorized personnel. This is typically implemented on networked multifunction devices for security and auditing.
From CompTIA A+ 220-1101 Official Study Guide, Objective 3.4 - Printer and device security:
"Enable user authentication on shared multifunction devices to restrict access to specific features for authorized users only." Verified Source:
CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 3: Printer Security CompTIA Exam Objectives 220-1101, Domain 3.4
NEW QUESTION # 639
Which of the following has the best penetration through physical objects, such as walls?
Answer: C
Explanation:
2.4GHz Wi-Fi signals have better penetration through walls and other obstacles compared to
5GHz and 6GHz. Lower frequency waves (like 2.4GHz) travel farther and are less absorbed by physical barriers.
NEW QUESTION # 640
Which of the following tools would a technician use to connect wires to an RJ45 connector?
Answer: D
Explanation:
A crimper is specifically used to attach RJ45 connectors to the ends of network cables. It pressesthe connector pins into the cable's wires, establishing a secure electrical connection. A punchdown tool is used for wiring patch panels or keystone jacks, not for attaching connectors.
Reference: "CompTIA A+ Complete Study Guide" by Quentin Docter - Chapter 3, "Cables and Connectors", page 162. Also outlined in the220-1201objectives under 3.1.
NEW QUESTION # 641
A user notices that their laptop experiences frequent and unpredictable shutdowns, even when the battery percentage is not low. Which of the following is most likely causing the shutdowns?
Answer: D
Explanation:
System overheating is the most likely cause of repeated shutdowns when the battery still has sufficient charge. Modern laptops monitor CPU, GPU, and internal system temperatures. If temperatures exceed safe limits, the system may first reduce processor performance through thermal throttling and then shut down automatically to prevent permanent component damage.
Common causes include blocked ventilation openings, accumulated dust, a failed cooling fan, dried thermal compound, or using the laptop on a surface that obstructs airflow. Malware, corrupted RAM, and outdated drivers can cause instability, crashes, or performance problems, but they are less directly associated with protective power shutdowns. The technician should inspect airflow, verify fan operation, check internal temperatures, and clean the cooling system before replacing other hardware. Repeated shutdowns during demanding workloads provide especially strong evidence of a thermal problem.
NEW QUESTION # 642
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