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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Mobile Devices | 15% | - Mobile device troubleshooting - Mobile device synchronization - Cellular connectivity and settings - Mobile device configuration - Mobile device management (MDM) |
| Topic 2: Networking | 20% | - Network connectivity - Network troubleshooting - IP addressing and subnetting basics - Network protocols and services - Network hardware and devices - Network configurations |
| Topic 3: Hardware and Network Troubleshooting | 26% | - Mobile device troubleshooting - Troubleshooting methodology - Printers and multifunction devices - Network troubleshooting - Common symptoms and root causes - Hardware troubleshooting |
| Topic 4: Virtualization and Cloud Computing | 12% | - Virtualization fundamentals - Virtual machine concepts - Cloud concepts and models (IaaS, PaaS, SaaS) - Cloud and virtualization troubleshooting - Cloud connectivity and configuration |
| Topic 5: Hardware | 27% | - RAM types and installation - Storage devices (HDD, SSD, NVMe) - PC hardware and peripherals - Peripheral devices and connections - Power supplies and connectors - CPU and expansion cards - BIOS/UEFI and firmware |
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NEW QUESTION # 172
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 # 173
After troubleshooting a computer's connectivity, the network team determines there is a port-mapping issue.
After plugging the patch cable into a different port, the issue persists. Which of the following troubleshooting steps should a technician take next to resolve the issue?
Answer: B
Explanation:
When port issues persist after moving to a different switch port, the next logical troubleshooting step is to test the patch cable. Faulty or damaged cables are a common cause of network connectivity problems. Using a cable tester between the computer and the network closet verifies the integrity of the cable and rules out a physical layer issue.
From CompTIA A+ 220-1101 Official Study Guide, Objective 4.2 - Troubleshoot wired and wireless networks:
"If a device continues to experience connectivity issues after switching ports, test the cabling with a cable tester to check for continuity, shorts, or pinout issues before replacing hardware." Verified Source:
* CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 4: Troubleshooting Network Connectivity
* CompTIA Exam Objectives 220-1101, Domain 4.2
NEW QUESTION # 174
The Chief Information Security Officer asks a technician to inventory desktop PCs to determine which ones meet the requirements for Secure Boot. The technician must also configure the PCs for non-user-controllable keys. Which of the following are necessary to meet the enhanced security requirements? (Select two).
Answer: A,C
Explanation:
Comprehensive and Detailed Explanation From Exact Extract (Aligned With CompTIA A+ 220-1201 Study Guide) To run Secure Boot, the system must have:
# UEFI firmware (not legacy BIOS)
Secure Boot is a UEFI feature that validates bootloaders using digitally signed keys stored in secure firmware.
# TPM (Trusted Platform Module)
The TPM stores cryptographic keys in tamper-resistant hardware, enabling secure key management that cannot be altered by normal users.
CompTIA materials describe TPM as essential for enhanced platform security and for storing validated boot keys when Secure Boot is enabled.
Together, UEFI + TPM provide:
* Verified boot loader
* Hardware-level key protection
* Prevention of unauthorized OS tampering
* Non-user-controllable secure key storage
Why the other options are incorrect
A). VDI - Virtual desktops; unrelated to Secure Boot hardware requirements.
B). BIOS password - Helps protect firmware settings but is not required for Secure Boot.
E). Disabled boot drive - Irrelevant to Secure Boot.
F). USB permissions - Not part of Secure Boot requirements.
Final Answer: C, D
NEW QUESTION # 175
A server that is crucial for daily operations is experiencing degraded performance. Upon investigation, a technician sees that one of the drives in a RAID 5 configuration shows a failure alert. The system must remain online during business hours, and the controller does not support hot swapping. Which of the following should the technician do to solve the issue?
Answer: B
Explanation:
The correct answer is D. Replace the drive with a cold-swappable drive.
According to CompTIA A+ Core 1 220-1201 objectives under Storage and RAID:
* RAID 5 provides both data striping and parity for fault tolerance, but if the RAID controller does not support hot swapping, replacing a failed drive while the system is running is not possible.
* Cold-swappable drives are designed to be safely removed and replaced when the system is powered down, which allows maintenance without damaging the array or system.
Why the other options are incorrect:
* A. Update the RAID controller firmware to support hot swapping: Firmware updates may add hot swap functionality, but this is not guaranteed and may require a system reboot.
* B. Implement a software-based RAID solution: Software RAID requires a system reconfiguration and downtime; it does not immediately resolve the degraded RAID 5 array.
* C. Change the drive during off-peak hours: While feasible, this is essentially the same as using a cold- swappable drive but is less precise; using cold-swappable drives ensures safe replacement without downtime considerations.
References:
CompTIA A+ Core 1 (220-1201) Exam Objectives - Storage: "Given a scenario, troubleshoot RAID issues including failed drives, degraded arrays, and drive replacement procedures." Mike Meyers' CompTIA A+ Certification Guide, 13th Edition, Chapter on RAID and Storage Maintenance.
NEW QUESTION # 176
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 # 177
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