CompTIA A+ Core 2 Study Guide

If you are getting ready for CompTIA A+ Core 2 (220-1202), you are in the right place. This is the written companion to the practice exams: a complete, plain-language walk through everything the test covers, in one place, so you can learn the reasoning behind the questions instead of just drilling them.

The 220-1202 rewards judgment far more than recall. Most questions hand you a real situation (a broken PC, a compromised workstation, a customer waiting) and ask for the one right next move. The credited answer is almost always the one that assumes the least trust and does the least damage: multifactor authentication over a lone password, WPA3 over WPA2, a standard account over an administrator one, the least-destructive repair before a wipe, and the deliberate, documented procedure over the fast fix. When malware is involved, the fixed ten-step removal order is the answer, not the boldest single step.

The guide follows the four official domains, weighted the way the real exam weights them: Operating systems and Security tie as the heaviest at 28 percent each, then Software troubleshooting at 23 percent and Operational procedures at 21 percent. Each chapter builds the mental model in plain language, separates the look-alike options with comparison tables and decision trees, and ends with a cheat sheet. Start at the top, or pick a domain from the list beside this page.