Pass the CompTIA A+ 220-1202 Questions and answers with ValidTests

Comprehensive and Detailed Explanation From Exact Extract:

Authenticator apps (e.g., Microsoft Authenticator, Google Authenticator, Duo) often support push notifications. When the user logs in, the app sends a push to their mobile device, prompting the user to approve or deny the authentication request — a common and user-friendly form of multi-factor authentication (MFA).

A. Phone call verification is a separate method involving voice-based confirmation.

C. Hardware tokens generate one-time codes but do not send push notifications.

D. SMS sends a text message with a code — again, no push mechanism.

Comprehensive and Detailed Explanation From Exact Extract:

Background applications can significantly drain a smartphone’s battery, even when the device is idle. A technician should first review which apps are running in the background and consuming power through the battery usage section of the OS. Disabling or restricting power-hungry apps often resolves poor battery life.

A. Storage usage doesn’t significantly affect battery life.

B. End of software support is unrelated to battery performance unless it's causing inefficient processes, which would still be secondary.

C. Charger wattage affects charging speed, not battery life after charging.

Comprehensive and Detailed Explanation From Exact Extract:

An "OS Not Found" error typically indicates that the computer is attempting to boot from a drive that doesn't contain a valid operating system or bootable partition. The presence of a USB drive might be confusing the boot order. Therefore, the first step a technician should take is to verify and adjust the boot sequence in the system’s firmware (BIOS or UEFI). It's possible that the USB drive is being prioritized over the internal hard drive, which may cause the system to miss the OS entirely.

A. Running data recovery tools is premature before confirming boot order.

B. Repartitioning the disk would destroy existing data—this should not be done until confirmed the OS is actually missing.

D. Switching between UEFI and BIOS (legacy mode) might help in rare cases, but it is not the first step in standard OS boot issue troubleshooting.

Comprehensive and Detailed Explanation From Exact Extract:

These symptoms strongly suggest malware activity—likely from the newly installed app. The first action should be torun a malware scanto detect and isolate malicious software.

FromQuentin Docter – CompTIA A+ Study Guide:

“Signs of malware infection include rapid battery drain and overheating. The first step should be a malware scan using trusted mobile antivirus apps.”

Comprehensive and Detailed Explanation From Exact Extract:

In the context of artificial intelligence, "hallucinations" refer to instances where an AI system generates information that is plausible-sounding but factually incorrect or entirely fabricated. This is a known limitation of large language models, including generative AI tools.

A. Data privacy refers to the protection of personal or sensitive data, not content accuracy.

C. Appropriate use relates to ethical and policy-based concerns, not factual correctness.

D. Plagiarism involves presenting someone else's work as your own — this situation is about accuracy, not ownership.

Comprehensive and Detailed Explanation From Exact Extract:

An Acceptable Use Policy (AUP) outlines the rules and guidelines for employees or users regarding the appropriate use of company systems, resources, and internet access. It defines permitted and prohibited activities, helping to mitigate security risks and establish clear behavioral expectations.

B. MNDA (Mutual Non-Disclosure Agreement) deals with confidentiality, not usage guidelines.

C. DRM (Digital Rights Management) controls access to copyrighted content.

D. EULA (End User License Agreement) pertains to software licensing, not internal policies.

Comprehensive and Detailed Explanation From Exact Extract:

The ext4 (Fourth Extended Filesystem) is the most widely used default filesystem in modern Linux distributions. It is designed for high performance, scalability, and reliability, and is supported by all mainstream Linux kernels.

A. exFAT is used for cross-platform external drives, not native Linux systems.

B. APFS is Apple's proprietary filesystem for macOS and iOS.

D. NTFS is the default filesystem for Windows, not Linux.

Comprehensive and Detailed Explanation From Exact Extract:

VPN clients often create virtual network adapters. If the software wasn't uninstalled properly or crashed during install, leftover (often hidden) virtual adapters can prevent reinstallation. The proper solution is to delete hidden network adapters using Device Manager (with “Show hidden devices” enabled).

A. OS updates won’t fix a leftover driver or adapter issue.

B. Mapping an adapter to the software is not a standard or viable solution.

C. Firmware updates apply to physical adapters, not virtual VPN adapters.

Comprehensive and Detailed Explanation From Exact Extract:

The su (substitute user) command is used in Linux to switch to another user account, most commonly to escalate privileges by switching to the root (administrator) account. It allows administrative tasks to be performed in a terminal session.

A. runas is a Windows command for executing a program under another user's context.

B. cmcl is not a valid Linux or administrative command.

C. net user is a Windows command for managing local user accounts.

Comprehensive and Detailed Explanation From Exact Extract:

Since the issue has recurred after a temporary fix, it is likely a deeper or persistent configuration or server issue. Escalating the ticket to the next tier of support (e.g., network or system administrator) ensures further investigation and permanent resolution. Escalation is part of the standard support protocol when issues reoccur despite initial troubleshooting.

A. Rechecking remotely may confirm the issue, but doesn’t resolve it long term.

B. Providing documentation helps the user but doesn’t solve the root cause.

D. Keeping the ticket open is passive and doesn’t address the recurring issue.