Comprehensive and Detailed Explanation From Exact Extract:
Thefirst stepin troubleshooting degraded mobile performance is typically arestart. This clears RAM and stops background processes that might be causing issues.
FromAll-in-One Exam Guide:
"Before taking invasive measures like a factory reset, always restart the device. A reboot clears temporary files and can significantly improve responsiveness."

Comprehensive and Detailed Explanation From Exact Extract:
In enterprise environments, network-based deployment solutions (such as Windows Deployment Services or SCCM) allow administrators to push images across the network to hundreds of devices efficiently. These tools support hardware-specific drivers (for different vendor classes) and can accommodate user-group configurations using task sequences or answer files.
A: and B (xcopy and robocopy) are file-level tools and not designed for full OS image deployment.
C: Using local tools per device is inefficient for large-scale rollouts (800 devices).
D: Network-based deployment is the industry standard for this scale.
Reference:
CompTIA A+ 220-1102 Objective 1.4: Given a scenario, use appropriate Microsoft operating system installation methods.
Study Guide Section: Deployment methods (including PXE boot, image deployment)

Comprehensive and Detailed Explanation From Exact Extract:
These symptoms strongly indicatemalware infectionor a malicious app running in the background. The first action should be torun a malware scanto identify and remove malicious components.
FromQuentin Docter - CompTIA A+ Complete Study Guide:
"If a mobile device is overheating and the battery drains rapidly after installing an app, this could point to malware. Begin by scanning the device with a mobile anti-malware application."

Comprehensive and Detailed Explanation From Exact Extract:
A corruptedMaster Boot Record (MBR)is a common issue after disk manipulation. Booting from installation media and using tools like bootrec to repair the MBR can resolve the problem.
Travis Everett - All-in-One Exam Guideexplains:
"A damaged MBR may result in the OS not loading. Booting from recovery or installation media and selecting startup repair or running bootrec commands can restore functionality."

Comprehensive and Detailed Explanation From Exact Extract:
NET Framework versions are often required for applications to run. If an older app requires .NET Framework
3.5, it must be explicitly installed as it is not included by default in newer versions of Windows. The best method to do this safely is through the built-in "Turn Windows features on or off" utility, which downloads and installs it via official Microsoft services.
B: Using third-party repositories is unsafe and not recommended.
C: Installing .NET 4 does not include 3.5; versions are not fully backward compatible.
D: The issue is technical, not a security incident for the SOC team.
Reference:
CompTIA A+ 220-1102 Objective 3.3: Troubleshoot common software, application, and OS security issues.
Study Guide Section: Managing application dependencies (e.g., .NET Framework, Java)