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| Section | Weight | Objectives |
|---|---|---|
| Networking | 23% | - IP addressing & protocols - Wireless networking standards & security - Network types, topologies & cables - Network connectivity & troubleshooting - Network devices & configuration |
| Hardware and Network Troubleshooting | 28% | - Network issues & resolution - Hardware problems & solutions - Troubleshooting methodology - Component failure diagnosis & repair |
| Mobile Devices | 13% | - Mobile device security & troubleshooting - Hardware components & replacement - Synchronization & data management - Network connectivity & configuration |
| Virtualization and Cloud Computing | 11% | - Cloud infrastructure & resource management - Virtual & cloud security - Virtualization concepts & hypervisors - Cloud service models & deployment types |
| Hardware | 25% | - PC components, installation & configuration - Custom PC builds & specialized hardware - Power supply & cooling systems - Peripherals & storage devices - Hardware maintenance & upgrades |
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NEW QUESTION # 101
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 # 102
Which of the following cable types must be used when running copper network cable through a suspended ceiling that is used for air ventilation?
Answer: A
Explanation:
Plenum-rated cable is required in air-handling spaces such as suspended ceilings used for ventilation because it has fire-resistant insulation that emits minimal toxic smoke if burned.
NEW QUESTION # 103
Marketing department users report network performance degradation in the morning and early afternoon, but sales and customer service department users do not report any issues. All structured cabling Is Cat 5e. All departments are connected to a core switch. The running network configuration shows the following:
Which of the following is the most likely cause of the performance issues?
Answer: C
Explanation:
From the configuration, the Sales and Customer Service ports are hard-set to full duplex, 1000 Mbps, while the Marketing interface (GigabitEthernet0/3) is set to duplex auto and speed auto. CompTIA A+ explains that mismatched or lower-negotiated speeds and duplex settings can cause noticeable network slowdowns, collisions, and retransmissions-especially at busy times of the day when utilization is high.
Because all cabling is Cat 5e, it fully supports Gigabit Ethernet, so the cabling is not the limiting factor. The IP addresses are all in the same subnet (192.168.1.0/24) and formatted correctly, so there is no subnet or addressing problem. That rules out options A and C.
With speed auto, the Marketing port may be negotiating only 10/100 Mbps, or even a duplex mismatch (e.g., half duplex vs full). This would severely limit throughput compared to the gigabit links used by the other departments. In peak periods, that slower link would become congested first, which matches the users' reports of performance degradation only in Marketing.
Therefore, the most likely cause is that the Marketing interface is operating at 10/100 instead of 1000 Mbps, making option D correct.
NEW QUESTION # 104
Which of the following statements best summarize managed vs unmanaged switches? (Select two).
Answer: A,C
Explanation:
Unmanaged switches require no configuration they simply need to be plugged in and start working immediately, making them ideal for simple network setups.
Managed switches provide advanced features such as VLANs, SNMP monitoring, port security, and traffic management, but require configuration.
From CompTIA A+ 220-1101 Official Study Guide, Objective 2.2 - Compare and contrast common networking hardware:
"Unmanaged switches operate out of the box with no configuration and are designed for simple connectivity.
Managed switches allow for configuration, monitoring, and management of network traffic and security." Verified Source:
CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 2: Networking Hardware CompTIA Exam Objectives 220-1101, Domain 2.2
NEW QUESTION # 105
A technician upgrades a PC with two DIMMs, for a total of 32GB. After installing the two DIMMs, the user notices the OS is reporting only 16GB. Which of the following tasks should the technician perform to resolve the issue in the most rapid, cost-effective way possible?
Answer: C
Explanation:
If newly installed RAM is not fully recognized, the most likely cause is incorrect installation or incompatible slots. Reseating or reinstalling the RAM modules in the correct slots can quickly resolve the issue without extra cost.
From CompTIA A+ 220-1101 Official Study Guide, Objective 3.2 - Install and configure PC components:
"If memory is not detected, check installation and reseat modules. Ensure they are placed in the correct, matched slots for dual-channel operation." Verified Source:
CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 3: Memory Installation CompTIA Exam Objectives 220-1101, Domain 3.2
NEW QUESTION # 106
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