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| Section | Weight | Objectives |
|---|---|---|
| Hardware | 25% | - PC hardware components
|
| Hardware and Network Troubleshooting | 29% | - Troubleshooting methodology
|
| Virtualization and Cloud Computing | 11% | - Cloud computing concepts
|
| Networking | 20% | - Network fundamentals
|
| Mobile Devices | 15% | - Mobile device hardware and components
|
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NEW QUESTION # 265
A local bank is designing its new infrastructure blueprint. Which of the following RAID types offers double parity?
Answer: D
Explanation:
RAID 6 uses double parity, allowing the array to tolerate the failure of up to two disks simultaneously while maintaining data integrity.
NEW QUESTION # 266
A technician is diagnosing several device issues reported by employees.
INSTRUCTIONS
Click on each device to review the issue. Then select the appropriate issue and solution from the drop-down menu. Each option may be used more than once.
Answer:
Explanation:
Explanation:
A screenshot of a computer AI-generated content may be incorrect.
NEW QUESTION # 267
SIMULATION
A user reports poor performance on the application server.
INSTRUCTIONS
Click on Server 1 and Server 2 and review the information presented in each chart to determine which drives need to be replaced.
Select the appropriate replacement drive that should be used, for the least performance degradation to the server.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
Answer:
Explanation:
See the detailed solution in explanation below
Explanation:
The degraded status on Server 2 indicates a RAID-5 issue, typically due to a failed or failing drive. In RAID-5 configurations, when one drive fails, the system can still operate but with reduced performance as parity data is used to rebuild missing data on-the-fly.
Recommended Replacement Drive:
To minimize performance degradation, the replacement drive should be:
SAS HDD with the same specifications (64KB stripe size, no read-ahead, and write-back policy).
Matching the configuration exactly ensures seamless integration and optimizes recovery speed in the RAID-5 array.
In RAID-5, degraded performance is expected when one drive fails, as parity data needs to rebuild missing information during each read/write process. Replacing the failed drive restores the RAID array to optimal status, reducing the load on existing drives and returning the system to normal read/write performance. The write-back policy and disabled disk cache settings are designed to reduce latency and increase efficiency, essential for handling real-time applications.
A user reports poor performance on the
application server.
INSTRUCTIONS
Click on Server 1 and Server 2 and review
the information presented in each chart to
determine which drives need to be replaced.
Select the appropriate replacement drive
that should be used, for the least
performance degradation to the server.
NEW QUESTION # 268
Which of the following is the best to use to stream real-time video from a network camera?
Answer: C
Explanation:
UDP (User Datagram Protocol) is the preferred protocol for real-time video streaming, such as feeds from network cameras. According to CompTIA Core 1 (220-1201) networking protocols objectives, UDP prioritizes speed and low latency over guaranteed delivery, making it ideal for time-sensitive applications.
Real-time video streaming can tolerate occasional packet loss, but it cannot tolerate delays caused by retransmissions. UDP does not perform error checking or packet retransmission, which reduces overhead and ensures smooth, continuous playback. This is critical for live video feeds where delayed packets are useless.
TCP, while reliable, introduces latency due to acknowledgments and retransmissions, making it unsuitable for real-time streaming. FTP is a file transfer protocol and does not support live streaming. RDP is used for remote desktop access and is not designed for transmitting continuous real-time video streams from cameras.
CompTIA emphasizes understanding protocol selection based on application requirements, particularly distinguishing between reliability and performance needs. For live video, UDP is the optimal choice.
NEW QUESTION # 269
A user reports that the print quality of their desk printer is poor. A technician replaces the ink cartridge, but this does not resolve the issue. Which of the following should the technician do next?
Answer: D
Explanation:
If print quality remains poor after replacing the ink cartridge, the next step is to clean the printheads. Printheads can become clogged with dried ink, especially in inkjet printers, causing streaks or faded output.
From the CompTIA A+ 220-1101 Official Study Guide, Objective 4.3 - Troubleshoot printing problems:
"Poor print quality after replacing cartridges is commonly caused by clogged or dirty printheads. Use the printer's cleaning cycle or manually clean the printheads as needed." Verified Source:
CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 4: Printer Troubleshooting CompTIA Exam Objectives 220-1101, Domain 4.3
NEW QUESTION # 270
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