Mike Meyers--the industry’s leading A+ certification authority and instructor--delivers another edition of his #1, best-selling study guide. Covering all official objectives for CompTIA's A+ Certification this must-have reference contains essential material to prepare you for both the Core Hardware and Operating System Technologies exams. Plus, the bonus CD-ROM contains practice tests, hundreds of questions, and LearnKey(tm) video clips. Not only will this book help you pass the A+ certification exams, but it will also teach you how to be an expert hardware technician.