220-1201 Exam Dumps and Practice Questions

Comprehensive and Detailed Explanation (From CompTIA A+ 220-1201 Concepts):

A consistent Wi-Fi SSID across all APs allows users to roam throughout the office while maintaining access to local resources without reconnecting manually.

CompTIA Core 1 Study Guide Concept Reference:

Wireless networking configuration

SSID broadcast and roaming

WLAN infrastructure

The study guide explains that a common SSID enables seamless roaming and uninterrupted access to network resources.

The correct answer is D. DVI (Digital Visual Interface).

According to CompTIA A+ Core 1 220-1201 objectives under Hardware and Display Technologies:

DVI is primarily a video-only interface that transmits digital or analog video signals from a source (like a computer) to a display.

Unlike HDMI or USB-C, DVI does not carry audio signals, making it strictly for video.

Why the other options are incorrect:

A . DisplayPort: Supports video and audio as well as other features such as daisy-chaining multiple monitors.

B . HDMI: Transmits both video and audio signals over a single cable.

C . USB-C: Can carry data, power, and video/audio signals depending on the device and protocol (e.g., DisplayPort Alt Mode).

References:

CompTIA A+ Core 1 (220-1201) Exam Objectives -- Hardware: ''Given a scenario, install and configure display devices and connections including VGA, DVI, HDMI, DisplayPort, and USB-C.''

Mike Meyers' CompTIA A+ Certification Guide, 13th Edition, Chapter on Video Connectors and Display Technologies.

A bulge under the trackpad on a laptop is a strong and well-known indicator of a swollen lithium-ion battery. According to CompTIA Core 1 (220-1201) mobile device hardware and troubleshooting objectives, laptop batteries are often located directly beneath the palm rest or trackpad area. When a lithium-ion battery begins to fail, it can swell due to internal chemical reactions, causing physical deformation of nearby components.

This swelling can interfere with the normal operation of the trackpad, leading to cursor control issues, clicking problems, or unresponsive behavior. More importantly, a swollen battery presents a serious safety risk, including the potential for overheating, leakage, or fire. For this reason, CompTIA emphasizes that battery replacement should be the first corrective action when physical swelling is observed.

Replacing the trackpad would not resolve the underlying pressure caused by the expanding battery. The motherboard and heat sink are unrelated to the physical bulge and cursor control symptoms described. Proper troubleshooting requires identifying and addressing the root cause, not the secondary symptom.

CompTIA best practices also stress safe handling and immediate replacement of damaged or swollen batteries to prevent further hardware damage or personal injury.

References:CompTIA A+ Core 1 (220-1201) Official Study Guide -- Laptop Batteries, Mobile Device Troubleshooting, and Hardware Safety

Virtual Desktop Infrastructure (VDI)hosts desktop environments on centralized servers. Thisallowsrapid deployment and consistent configurationacross multiple users, minimizing manual setup and easing IT management.

Option A:VDI still uses standard authentication methods.

Option B:Licensing can actually be more expensive due to virtualization software and backend servers.

Option D:VDI centralizes the desktop environment viruses would affect the virtual session, not be 'contained locally.'

CompTIA A+ Core 1 Exam Objective Reference:

Objective 4.1: Compare and contrast cloud computing concepts.

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.

Final Answe r: D. Dual channel