A+ 220-1102 — Domain 3: Software Troubleshooting

This practice-test pack targets Domain 3: Software Troubleshooting on the 220-1102. You’ll drill realistic scenarios covering Windows boot failures, BSODs, slow systems, services and startup conflicts, app crashes, patch/update problems, printer and spooler errors, browser/email glitches, profile and permission issues, and malware cleanup. You’ll also handle macOS and Linux basics (updates, package managers, permissions, logs), plus mobile OS issues (iOS/Android app errors, storage/battery/network problems) and cloud/app sync hiccups.

Each question uses the CompTIA troubleshooting model—identify the problem, establish a theory, test, create/implement a plan, verify full functionality, and document. Every option (even wrong answers) includes an explanation, so you learn why a distractor is unsafe or irrelevant.

You’re only buying tests here—no long lectures. Use 15-minute study bursts: do 10–15 questions, read every explanation, flag weak areas, and return tomorrow. The cumulative effect of short, consistent sessions beats cramming: your pattern-recognition improves, and fixes become second nature. Repeat until you can explain the right answer before revealing it. When you can predict the distractors, you’re exam-ready.

Practice test lineup (Domain 3)

• Test 1 — Windows Application & OS Issues
  App crashes, update failures, profile/permission errors, missing DLLs, app compatibility, and restore/rollback choices.

• Test 2 — Boot, BSOD & System Recovery
  Boot loops, recovery media, WinRE tools, Startup Repair, BCD fixes, restore points, DISM/SFC, and driver rollbacks.

• Test 3 — Performance, Services & Startup Conflicts
  Slow systems, high CPU/RAM/disk, service dependencies, startup impact, Task Manager/Autoruns, and scheduled tasks.

• Test 4 — macOS & Linux Troubleshooting
  Package managers, permissions and ownership, logs, updates, disk issues, startup items/daemons, and basic CLI triage.

• Test 5 — Browser, Email & Productivity Apps
  Cache/cookies/extensions, profiles, proxies/SSL warnings, OST/PST issues, add-ins, and SaaS sign-in/sync problems.

• Test 6 — Mobile, Printing & Cloud/App Issues
  iOS/Android app failures, storage/battery/network, MDM basics, printer queues/drivers, and cloud-sync collisions.

How to use these tests

• Study in 15-minute chunks; read every explanation (right and wrong).

• Track misses; revisit them 24–48 hours later for spaced repetition.

• Replicate fixes in a lab/VM when possible to build muscle memory.

• On exam day, apply the model: identify → test → fix → verify → document.

Disclaimer

CompTIA A+ is a registered trademark of CompTIA. This course is not endorsed by or affiliated with CompTIA. This course covers Domain 3 of the 220-1102 exam.