Introduction

Welcome to the CompTIA A+ Complete Study Guide. This is the fourth edition of our best-selling study guide for the A+ certification sponsored by CompTIA (Computing Technology Industry Association).

This book is written at an intermediate technical level; we assume that you already know how to use a personal computer and its basic peripherals, such as USB devices and printers, but we also recognize that you may be learning how to service some of that computer equipment for the first time. The exams cover basic computer service topics as well as some more advanced issues, and they cover some topics that anyone already working as a technician, whether with computers or not, should be familiar with. The exams are designed to test you on these topics in order to certify that you have enough knowledge to fix and upgrade some of the most widely used types of personal computers.

We’ve included review questions at the end of each chapter to give you a taste of what it’...