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| Section | Weight | Objectives |
|---|---|---|
| Virtualization and Cloud Computing | 11% | - Cloud computing concepts
|
| Networking | 20% | - Network fundamentals
|
| Hardware | 25% | - PC hardware components
|
| Mobile Devices | 15% | - Mobile device hardware and components
|
| Hardware and Network Troubleshooting | 29% | - Troubleshooting methodology
|
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NEW QUESTION # 344
A computer runs normally for several minutes, gradually runs slower, and then shuts down without warning. Which of the following resolves this issue?
Answer: B
Explanation:
The key clue is the sequence: normal operation, gradual slowdown, and then sudden shutdown.
That pattern is typical of overheating. As temperature rises, modern CPUs and GPUs may throttle performance to reduce heat; if cooling remains inadequate, the system may lock up or shut down to prevent damage. The Quentin Docter study guide specifically states that overheating components may cause intermittent shutdowns and that a PC working for a few minutes and then locking up is probably experiencing a heat sink or fan problem. It recommends checking all fans and heat sinks first. The study guide also notes that motherboards often include CPU heat and fan sensors that can shut the computer down before damage occurs if active cooling fails.
Upgrading RAM or adding drive space could improve some performance issues, but they would not usually cause a heat-related shutdown. A failing power supply can cause shutdowns, but the gradual slowdown before power-off makes fan/cooling failure the better match.
NEW QUESTION # 345
A company is testing the latest model of a laptop. After turning on the laptop, there is a noticeable burning smell. Which of the following steps should a technician take to troubleshoot the laptop issue? (Select two).
Answer: A,E
Explanation:
When a technician encounters a burning smell, it is a critical safety issue. The first response must be to immediately power down and disconnect the device from all power sources to prevent electric shock, fire, or further hardware damage.
From the CompTIA A+ 220-1101 Official Study Guide, Objective 4.1 - Troubleshoot common hardware problems:
"Signs of electrical issues such as burning smells, smoke, or sparks require an immediate shutdown of the system and disconnection from any power source." After ensuring safety, the technician should inspect the hardware for visible signs of damage:
From the same Objective (4.1):
"Inspect for foreign objects, liquid damage, or burnt components. These can cause short circuits or thermal events that may damage the motherboard or other internal components." These steps are standard practice in the industry to ensure safe and accurate diagnosis of faulty devices.
Trying a different adapter (Option F) may make the problem worse, and contacting vendors (Option D) comes after initial safety and inspection.
Verified Source:
CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 4: Troubleshooting Hardware Problems CompTIA Exam Objectives 220-1101, Domain 4.0 - Hardware and Network Troubleshooting
NEW QUESTION # 346
Which of the following has the best penetration through physical objects, such as walls?
Answer: A
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.
From the CompTIA A+ 220-1101 Official Study Guide, Objective 2.5 - Compare and contrast wireless networking protocols:
"The 2.4GHz frequency band offers greater range and better penetration through walls and obstacles than higher frequencies like 5GHz and 6GHz. Higher frequencies provide faster speeds but are more easily absorbed by walls." NFC (Near Field Communication) is not a Wi-Fi technology and works only over very short distances (a few centimeters).
Verified Source:
CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 2: Wireless Networking CompTIA Exam Objectives 220-1101, Domain 2.5
NEW QUESTION # 347
A technician needs to prepare a conference room for a meeting. The technician connects the laptop to the LCD projector and audio system, and then verifies the connectivity of each device. The meeting begins, but the visual presentation suddenly cuts off 30 minutes later. The audio continues to play without interruption. The technician brings in a backup laptop and connects it to the projector. The meeting continues without issue for 15 minutes until the presentation suddenly cuts off again. Which of the following should the technician do to resolve this issue?
Answer: E
Explanation:
Overheating is a common cause of projectors shutting down after extended use. A clogged air filter can cause overheating, resulting in intermittent shutdowns.
From CompTIA A+ 220-1101 Official Study Guide, Objective 4.1 - Troubleshooting displays:
"If a projector shuts down after running for a period, clean or replace the filter to prevent overheating and automatic shutdown." Verified Source:
CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 4: Display Troubleshooting CompTIA Exam Objectives 220-1101, Domain 4.1
NEW QUESTION # 348
The display in a conference room has a burn-in get fastestthat does not match the presentation Which of the following would test resolve the issue?
Answer: D
Explanation:
B). Correct the keystone:
A keystone correction adjusts the image shape when a projector is angled either up or down. When a projector is not positioned directly perpendicular to the screen, the image becomes distorted or offset. Correcting the keystone will resolve alignment issues, ensuring that the presentation matches the display.
Incorrect Options:
A). Adjust the color settings: This is used for improving color balance and has no impact on ghosting or mismatched images.
C). Increase the brightness levels: Brightness changes the visibility of the image but does not address ghosting or alignment.
D). Replace the monitor: Replacing the monitor is unnecessary unless there is hardware failure, which is not indicated here.
Key Takeaway: Keystone correction is essential to resolve alignment and distortion issues in projected images.
Reference: CompTIA A+ Core 1 Exam Objectives (220-1201), Domain 3.4 - Display troubleshooting.
NEW QUESTION # 349
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