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| Section | Weight | Objectives |
|---|---|---|
| Mobile Devices | 15% | - Mobile device configuration - Mobile device management (MDM) - Mobile device troubleshooting - Mobile device synchronization - Cellular connectivity and settings |
| Networking | 20% | - IP addressing and subnetting basics - Network connectivity - Network configurations - Network hardware and devices - Network troubleshooting - Network protocols and services |
| Hardware and Network Troubleshooting | 26% | - Printers and multifunction devices - Mobile device troubleshooting - Common symptoms and root causes - Hardware troubleshooting - Network troubleshooting - Troubleshooting methodology |
| Virtualization and Cloud Computing | 12% | - Cloud and virtualization troubleshooting - Virtual machine concepts - Virtualization fundamentals - Cloud connectivity and configuration - Cloud concepts and models (IaaS, PaaS, SaaS) |
| Hardware | 27% | - CPU and expansion cards - Peripheral devices and connections - RAM types and installation - PC hardware and peripherals - Power supplies and connectors - Storage devices (HDD, SSD, NVMe) - BIOS/UEFI and firmware |
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NEW QUESTION # 82
Which of the following RAM characteristics allows for the most data bandwidth?
Answer: D
Explanation:
The correct answer is D. Dual channel.
In the CompTIA A+ Core 1 (220-1201) hardware objectives, memory bandwidth refers to the amount of data that can be transferred between RAM and the CPU in a given amount of time.
Dual channel memory architecture increases bandwidth by:
* Allowing the memory controller to access two memory modules simultaneously
* Effectively doubling the data transfer rate compared to single-channel configurations
* Improving overall system performance, especially in memory-intensive tasks Why the other options are incorrect:
A). CAS latency
CAS latency measures the delay before data is available after a request. Lower latency improves response time, but it does not significantly increase total bandwidth.
B). ECC
ECC (Error-Correcting Code) improves reliability by detecting and correcting errors, but it does not increase data transfer bandwidth.
C). High clock speed
Higher clock speed does increase bandwidth, but not as significantly as enabling dual channel, which allows parallel data transfer paths and provides a greater overall increase.
NEW QUESTION # 83
Which of the following is most commonly used to increase 802.11 wireless throughput speed?
Answer: D
Explanation:
Channel width refers to the size of the frequency band used for Wi-Fi communication.
Increasing channel width (e.g., from 20 MHz to 40 MHz, 80 MHz, or 160 MHz) allows more data to be transmitted at once, effectively increasing wireless throughput speed.
NEW QUESTION # 84
Which of the following cloud models exclusively uses dedicated resources?
Answer: B
Explanation:
A private cloud is built for and used by a single organization, ensuring that all compute, storage, and network resources are dedicated exclusively to that organization and not shared with others.
NEW QUESTION # 85
A technician is building a home desktop computer. The technician wants to prioritize cable management when considering the type of power supply. Which of the following power supply types should the technician consider?
Answer: A
Explanation:
A modular power supply is the best choice when cable management is a priority. According to CompTIA Core 1 (220-1201) power supply objectives, modular PSUs allow technicians to connect only the cables that are needed for the system's components, reducing clutter inside the case.
This improves airflow, simplifies troubleshooting, and creates a cleaner internal layout, which is especially beneficial in home-built desktop systems. Semi-modular and fully modular power supplies offer varying degrees of flexibility, but all modular designs reduce unused cables compared to standard power supplies.
A standard (non-modular) power supply has all cables permanently attached, often resulting in excess unused cables that obstruct airflow. A backup power supply refers to an uninterruptible power supply (UPS), which provides battery backup but does not improve internal cable management. A redundant power supply is typically found in enterprise servers and includes multiple PSUs for fault tolerance, not cable management.
CompTIA emphasizes modular power supplies as a best practice for clean builds and efficient system design, making this the correct answer.
NEW QUESTION # 86
A company will retire a legacy application in one year but wants to decommission the physical environment now. Which migration method is best?
Answer: C
Explanation:
P2V (physical-to-virtual) conversion allows the legacy application to be moved off its dedicated physical hardware while remaining operational.
Hosting on IaaS (Infrastructure as a Service) means the application runs on virtual servers in a cloud provider's data center, which removes the company's need to maintain a physical environment on-premise.
This approach is ideal for legacy systems nearing retirement because it requires minimal changes to the application itself (often referred to as a "lift and shift" migration), keeping it running for its final year without the burden of managing physical infrastructure.
NEW QUESTION # 87
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