The only authorized textbook for the Cisco Networking Academy Program. IT Essentials I: PC Hardware and Software Companion Guide, Second Editionis the Cisco approved textbook that supports version 3.x of the web-based course in the Cisco Networking Academy Program. The goal of IT Essentials I is to lay a foundation of the basic information required to assemble a computer and troubleshoot problems that occur. You learn how to properly install, configure, upgrade, troubleshoot, and repair PC hardware and software. The topics covered in this guide help prepare you to pass the CompTIA A+ certification exam to become a certified computer service technician and pursue a future career in IT technology or simply be equipped with the knowledge of how a computer works. Use this Companion Guide as a portable desk reference to access the information for study and review at any time! Chapter objectives provide references to the concepts covered in each chapter, and an extensive glossary lists key terms and their definitions. In addition, review questions at the end of each chapter track progress and aid studying. This book also provides information on the careers available to an IT professional, detailing career paths, including related fields, degree fields, and the fields where certification is necessary. Throughout this book are references to worksheet and lab activities found inIT Essentials I: PC Hardware and Software Lab Companion. This lab companion provides you with ample opportunities for hands-on practice and thought-provoking review questions. Companion Titles for IT Essentials I: IT Essentials I: PC Hardware and Software Lab Companion Second Edition ISBN: 1-58713-138-2 IT Essentials I: PC Hardware and Software Engineering Journal and Workbook Second Edition ISBN: 1-58713-137-4 Companion CD-ROM This companion CD-ROM contains more than 800 comprehensive exam questions to review for the A+ and Server+ certification exams, 15 interactive e-Lab activities, 14 high-resolution PhotoZooms, and 28 video vignettes covering hardware and software installation. This book is part of the Cisco Networking Academy Program Series from Cisco Press. The products in this series support and complement the Cisco Networking Academy Program.