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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Virtualization and Cloud Computing | 11% | - Cloud computing concepts
|
| Topic 2: Hardware and Network Troubleshooting | 29% | - Troubleshooting methodology
|
| Topic 3: Mobile Devices | 15% | - Mobile device hardware and components
|
| Topic 4: Networking | 20% | - Network fundamentals
|
| Topic 5: Hardware | 25% | - PC hardware components
|
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NEW QUESTION # 612
Which of the following is an isolated virtual machine?
Answer: B
Explanation:
A sandbox is an isolated virtual environment, often used for testing code or software safely without affecting the host system.
NEW QUESTION # 613
A management team is concerned about enterprise devices that do not have any controls in place. Which of the following should an administrator implement to address this concern?
Answer: D
Explanation:
Mobile Device Management (MDM) enables administrators to enforce controls on enterprise devices, such as restricting apps, ensuring compliance, and remotely managing security policies.
Why Not B (MFA): Multi-Factor Authentication secures user access but does not control device configurations.
Why Not C (VPN): VPN secures communication but does not enforce device controls.
Why Not D (SSL): SSL secures data in transit but does not provide device management.
CompTIA A+ Exam Reference: Core 2 (220-1102), Section 2.7, device management concepts.
NEW QUESTION # 614
Which of the following is the best to use to stream real-time video from a network camera?
Answer: B
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.
References:CompTIA A+ Core 1 (220-1201) Official Study Guide - Network Protocols and Use Cases
NEW QUESTION # 615
A customer experiences a power outage at their data center. After the outage, one server with three hard drives in RAID 5 does not come back online. When a technician connects to the server, they receive a message stating that Drive 3 has failed. Which of the following steps should the technician take next to minimize the risk of data loss?
Answer: B
Explanation:
RAID 5 provides fault tolerance by distributing parity information across all drives, allowing the array to continue operating if one drive fails. In a three-drive RAID 5 set, a single disk failure puts the array into a degraded state where it can still function, but it is at higher risk because losing a second drive before recovery would cause data loss. Since the system reports Drive 3 has failed after a power outage, the best next step to minimize risk is to replace the failed drive immediately and start the rebuild. Rebuilding regenerates the missing data blocks onto the new drive using parity, returning the array to a protected state.
Option B leaves the array degraded and increases exposure to a second failure. Option C (firmware upgrade) is not a first response in an active failure scenario and can introduce additional risk or downtime. Option D (restore from backup) is typically used when the array is unrecoverable or multiple drives fail; it is more disruptive and unnecessary when RAID 5 can recover from a single-disk failure. Therefore, replacing the defective drive and triggering an array rebuild is the correct next step.
NEW QUESTION # 616
A network printer consistently produces faint printouts. Users report that the issue persists across different computers and print jobs. Which of the following steps should the technician take first?
Answer: D
Explanation:
Faint printouts across all devices and jobs indicate a hardware supply issue, most commonly a depleted toner cartridge that can no longer provide sufficient ink density.
NEW QUESTION # 617
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