IT Essentials: PC Hardware and Software Companion Guide

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IT Essentials: PC Hardware and Software Companion Guide

IT Essentials: PC Hardware and Software Companion Guide

Introduction to 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 questions and exercises.

    The IT Essentials: PC Hardware and Software course aligns with the CompTIA A+ (220-801) exam and CompTIA A+ (220-802) exam. You must pass both exams to earn the CompTIA A+ certification.

100+ Java Programs with Output for Interview Preparation

Introduction to the Personal Computer:

    Information technology (IT) is the design, development, implementation, support, and management of computer hardware and software applications. A computer is an electronic machine that performs calculations based on a set of instructions. A computer system consists of hardware and software components. This chapter discusses hardware components found in a computer system, selecting replacement computer components, and configurations for specialized computer systems.

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Contents At a Glance

Introduction xxiv

Chapter 1 Introduction to the Personal Computer 1

Chapter 2 Lab Procedures and Tool Use 75

Chapter 3 Computer Assembly 105

Chapter 4 Overview of Preventive Maintenance 155

Chapter 5 Operating Systems 179

Chapter 6 Networks 295

Chapter 7 Laptops 393

Chapter 8 Mobile Devices 451

Chapter 9 Printers 503

Chapter 10 Security 541

Chapter 11 The IT Professional 607

Chapter 12 Advanced Troubleshooting 633

Appendix A Answers to “Check Your Understanding” Questions 683

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