Comprehensive and Detailed Explanation From Exact Extract:
Shreddingphysically destroys the platters, making data recovery virtually impossible. It's more effective and accessible than degaussing or low-level formatting.
FromQuentin Docter - CompTIA A+ Complete Study Guide:
"Physical destruction methods like shredding are the most secure options for ensuring data on failed drives cannot be recovered."

Comprehensive and Detailed Explanation From Exact Extract:
Highmemory usage (97%)suggests the system is overloaded with active processes. The technician should close unneeded applications to free up RAM and improve performance.
FromMike Meyers' Lab Manual:
"When memory usage is near capacity, close all non-essential programs. This can dramatically improve response time without needing hardware upgrades."

Comprehensive and Detailed Explanation From Exact Extract:
One of the most common causes for performance degradation on smartphones isstorage or memory overloaddue to excessive apps.Uninstalling unused appsis a basic but effective first diagnostic step.
FromTravis Everett - All-in-One Exam Guide:
"Start troubleshooting sluggish smartphones by clearing unused apps and files before performing advanced diagnostics or resets."

Comprehensive and Detailed Explanation From Exact Extract:
A Potentially Unwanted Program (PUP) is software that a user may not have knowingly installed. It often gets bundled with legitimate software and installs without full disclosure. PUPs can affect performance, change system settings, or display unwanted ads but are not necessarily malicious like viruses or ransomware.
A). Viruses replicate and spread; they are generally more harmful and not "bundled" in the same way.
B). Ransomware encrypts files for payment and is deliberately malicious.
D). A Trojan disguises itself as legitimate software to perform malicious actions but is not typically pre- bundled by legitimate publishers.
Reference:
CompTIA A+ 220-1102 Objective 2.5: Given a scenario, detect, remove, and prevent malware using appropriate tools and methods.
Study Guide Section: Types of malware - PUPs and bundled software

Comprehensive and Detailed Explanation From Exact Extract:
3G networks generally do not provide the bandwidth required for seamless HD video streaming. With only two signal bars and a 3G connection, the mobile device likely cannot maintain the necessary data throughput, resulting in timeouts or buffering failures. This is a classic symptom of insufficient network speed or signal strength.
A: Lack of Wi-Fi may contribute, but the root cause is the low mobile bandwidth, not the Wi-Fi state.
B: A website subscription lapse would return an account error, not a timeout.
D: Full device storage can affect downloads but not streaming from the internet.
Reference:
CompTIA A+ 220-1102 Objective 3.3: Troubleshoot mobile OS and application issues.
Study Guide Section: Connectivity and network performance issues on mobile devices