Welcome to the CompTIA A+ Complete Study Guide. This is the fourth edition of our bestselling study guide for the A+ certification sponsored by CompTIA (Computing Technology Industry Association). This book was written at an intermediate technical level; we assume that you already know how to use a personal computer and its basic peripherals, such as modems 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.
