Introduction
IT Essentials v6 Companion Guide is a supplemental book to the Cisco Networking Academy IT Essentials: Version 6 course. The course includes information to allow you to develop working knowledge of how computers and mobile devices operate. It covers information security topics as well as providing practice experience in computer procedures, networking, and troubleshooting. The course is designed to prepare you to take and pass the CompTIA A+ 900 series exams. 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 v6 Lab Manual (ISBN 978-1-58713-354-1), you can reinforce those concepts with hands-on exercises ...
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