Introduction
IT Essentials: PC Hardware and Software Companion Guide, Fifth Edition, is a supplemental book to the Cisco Networking Academy IT Essentials: PC Hardware and Software Version 5 course. The course teaches you how to build a computer and troubleshoot problems that occur in everyday use. The course is designed to prepare you to take and pass the CompTIA A+ exams (based on the 2012 objectives). By reading and completing this book, you have the opportunity to review all key concepts that the CompTIA A+ exams cover. If you use this book along with its companion, IT Essentials: PC Hardware and Software Lab Manual, Fifth Edition (ISBN 1-58713-310-5), you can reinforce those concepts with hands-on exercises and test that knowledge with review ...
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