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| Section | Weight | Objectives |
|---|---|---|
| Virtualization and Cloud Computing | 11% | - Virtualization concepts & hypervisors - Virtual & cloud security - Cloud infrastructure & resource management - Cloud service models & deployment types |
| Hardware | 25% | - Peripherals & storage devices - Power supply & cooling systems - Hardware maintenance & upgrades - PC components, installation & configuration - Custom PC builds & specialized hardware |
| Hardware and Network Troubleshooting | 28% | - Hardware problems & solutions - Troubleshooting methodology - Network issues & resolution - Component failure diagnosis & repair |
| Networking | 23% | - Network types, topologies & cables - IP addressing & protocols - Wireless networking standards & security - Network devices & configuration - Network connectivity & troubleshooting |
| Mobile Devices | 13% | - Hardware components & replacement - Network connectivity & configuration - Synchronization & data management - Mobile device security & troubleshooting |
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質問 # 539
Which of the following cable types is the most suitable for delivering 10Gb speeds for distances over 328ft (100m) but under 1,312ft (400m)?
正解：B
解説：
Comprehensive and Detailed Step-by-Step Explanation:
When delivering 10Gbps speeds over long distances, fiber optic cables are the best choice. Here's the breakdown:
A:Multimode Fiber (Correct Answer):
Multimode fiber is designed for relatively short to medium distances (up to 1,312 feet or 400 meters) while supporting high-speed data transfer (10Gbps and above).
It uses LED light sources and is cost-effective for environments like data centers or within buildings.
For the specified distance of over 328ft but under 1,312ft, multimode fiber is the most suitable option.
Incorrect Options:
B: Single-mode Fiber: While single-mode fiber supports much greater distances (up to several miles or kilometers) and higher speeds, it is more expensive and unnecessary for the specified range. Single-mode fiber is generally used for long-haul networking or telecommunications.
C: Cat 6a: Cat 6a is capable of 10Gbps speeds but only up to 328ft (100 meters). It cannot reliably handle the specified distance of over 328ft.
D: Cat 6: Cat 6 is also limited to 10Gbps speeds at distances up to 328ft (100 meters). Beyond this range, it is unsuitable.
Key Takeaway:
For delivering 10Gbps speeds over distances longer than 328ft (100m) but under 1,312ft (400m), Multimode Fiber is the best choice due to its ability to support high-speed data over medium distances at a reasonable cost.
Reference: CompTIA A+ Core 1 Exam Objectives (220-1201), Domain 3.1 - Cable types and their characteristics, including fiber optic cables.
質問 # 540
A help desk technician inspects a laptop keyboard because a single key has stopped working. The technician checks the keyboard for debris. Which of the following actions should the technician do next to troubleshoot the issue cost-effectively?
正解：C
解説：
If only one key is not functioning and debris has been checked, replacing the individual keycap is the most cost-effective next step. It's a simple, low-cost option before considering more extensive repairs like replacing the entire keyboard.
Reference: "CompTIA A+ Complete Practice Tests" by Jeff T. Parker - Chapter 1, Question 10, page 8.
質問 # 541
Which of the following wireless networking technologies primarily operates in the 5GHz frequency band?
正解：D
解説：
802.11ac is a Wi-Fi standard that primarily operates in the 5GHz band and is known for higher throughput and improved performance compared with older 2.4GHz-focused standards. In CompTIA A+ Core 1 networking objectives, you are expected to recognize which IEEE 802.11 standards map to which frequency bands and the typical trade-offs. The 5GHz band generally provides more available non-overlapping channels and less interference from common household devices (like microwaves and many Bluetooth peripherals), which can improve real-world performance. While 5GHz typically has shorter range and weaker wall penetration than 2.4GHz, it often delivers better speeds in the same-room or nearby-room scenarios, which aligns with how 802.11ac is commonly deployed.
Bluetooth primarily uses the 2.4GHz ISM band and is designed for short-range personal area networking rather than high-speed WLAN connections. NFC operates at 13.56MHz for very short-range tap-based communications. RFID can operate at several bands (low frequency, high frequency, ultra-high frequency) depending on the use case, but it is not a Wi-Fi networking standard and does not "primarily" operate at
5GHz. Therefore, the correct answer is 802.11ac.
質問 # 542
A company is separating its accounting department's network from its customer service department's network. Which of the following will accomplish this task?
正解：C
解説：
Comprehensive and Detailed Explanation From Exact Extract (Aligned With CompTIA A+ 220-1201 Study Guide) CompTIA networking fundamentals describe VLANs (Virtual Local Area Networks) as a method to segment network traffic logically, even while using the same physical switch hardware.
A VLAN allows a company to:
Separate traffic by department
Improve security
Reduce broadcast domains
Control inter-department access
To separate accounting and customer service networks, VLANs are the industry-standard and the CompTIA-approved method.
Why the other options are incorrect
A . VPN - Used for secure remote connections, not internal LAN segmentation.
B . DNS - Resolves hostnames to IPs, not used for network separation.
D . DHCP - Assigns IP addresses; does not isolate network groups.
質問 # 543
An office manager wants to know which users are printing the most pages. Which of the following can a technician enable to provide this data to the office manager?
正解：D
解説：
Audit logging tracks and records user activities on devices such as printers, including print jobs and page counts, allowing identification of users with the highest usage.
質問 # 544
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