www.allitebooks.com www.allitebooks.com www.allitebooks.com ® CompTIA ® A+ Complete Deluxe Study Guide Second Edition www.allitebooks.com www.allitebooks.com ® CompTIA ® A+ Complete Deluxe Study Guide Second Edition Quentin Docter Emmett Dulaney Toby Skandier www.allitebooks.com Senior Acquisitions Editor: Jeff Kellum Development Editor: Alexa Murphy Technical Editors: Naomi Alpern and Ian Seaton Production Editor: Dassi Zeidel Copy Editor: Judy Flynn Editorial Manager: Pete Gaughan Production Manager: Tim Tate Vice President and Executive Group Publisher: Richard Swadley Vice President and Publisher: Neil Edde Media Project Manager 1: Laura Moss-Hollister Media Associate Producer: Shawn Patrick Media Quality Assurance: Marilyn Hummel Book Designers: Judy Fung and Bill Gibson Compositor: Craig Woods, Happenstance Type-O-Rama Proofreader: Josh Chase, Word One New York Indexer: Ted Laux Project Coordinator, Cover: Katherine Crocker Cover Designer: Ryan Sneed Cover Image: © Jeremy Woodhouse / Photodisc / Getty Images Copyright © 2012 by John Wiley & Sons, Inc., Indianapolis, Indiana Published simultaneously in Canada ISBN: 978-1-118-32406-6 No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as permit- ted under Sections 107 or 108 of the 1976 United States Copyright Act, without either the prior written permission of the Publisher, or authorization through payment of the appropriate per-copy fee to the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, (978) 750-8400, fax (978) 646- 8600. 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If this book refers to media such as a CD or DVD that is not included in the version you purchased, you may download this material at http://booksupport.wiley.com. For more information about Wiley products, visit www.wiley.com. Library of Congress Control Number: 2012944696 TRADEMARKS: Wiley, the Wiley logo, and the Sybex logo are trademarks or registered trademarks of John Wiley & Sons, Inc. and/or its affiliates, in the United States and other countries, and may not be used without written permission. CompTIA and A+ are registered trademarks of Computing Technology Industry Association, Inc. All other trademarks are the property of their respective owners. John Wiley & Sons, Inc. is not associated with any product or vendor mentioned in this book. 10 9 8 7 6 5 4 3 2 1 www.allitebooks.com Dear Reader, Thank you for choosing CompTIA A+ Complete Deluxe Study Guide, Second Edition. This book is part of a family of premium-quality Sybex books, all of which are written by outstanding authors who combine practical experience with a gift for teaching. Sybex was founded in 1976. More than 30 years later, we’re still committed to producing consistently exceptional books. With each of our titles, we’re working hard to set a new standard for the industry. From the paper we print on, to the authors we work with, our goal is to bring you the best books available. I hope you see all that refected in these pages. I’d be very interested to hear your comments and get your feedback on how we’re doing. Feel free to let me know what you think about this or any other Sybex book by sending me an email at For Kara, Abbie, Lauren, Reina, and Alina —Quentin Docter For Karen, Kristin, Evan, and Spencer —Emmett Dulaney For Karen, Toby, Tiffani, Trey, and Taylor —Toby Skandier www.allitebooks.com Acknowledgments As we were putting together this book, I was reminded of the proverb that begins, “It takes a small village…” That beginning defnitely holds true to create a book of this scope and size. From beginning to end, there are scores of dedicated professionals focused on delivering the best book possible to you the readers. First, I need to thank my coauthors, Emmett Dulaney and Toby Skandier. Their dedication to producing an excellent book that will best serve the needs of our readers is inspiring. Now, onto the rest of the team. Jeff Kellum and Alexa Murphy kept us on track and moving forward, which was a chal- lenge at times. Dassi Zeidel had the fun job of keeping us organized, which is akin to herd- ing cats. Tech editors Naomi Alpern and Ian Seaton provided a great set of expert eyes and made excellent suggestions. Copyeditor Judy Flynn reminded me yet again that I am no mas- ter of the English language and saved me from butchering it (too badly). Many thanks also go out to proofreader Josh Chase at Word One, our indexer Ted Laux, and Craig Woods, our compositor at Happenstance. Without their great contributions this book would not have made it to your hands. —Quentin Docter I would like to thank Jeff Kellum—an acquisitions editor who knows how to do a diffcult job extremely well. I would also like to thank my coauthors, Quentin Docter and Toby Skandier, without whom this text would have never happened. —Emmett Dulaney Quentin Docter and Emmett Dulaney are two of the most professional and expert coauthors anyone could request. I had the great fortune a few editions ago to be brought onboard this project without the need to request them. Truer serendipity is hard to fnd in this world. Thanks, guys. I would like to thank our acquisitions editor, Jeff Kellum, and development editor, Alexa Murphy, for their expert guidance and project management. Without them, a work of this magnitude would surely be doomed. Thanks to our technical editors, Naomi Alpern and Ian Seaton, for doing such a great job fagging any technical issues that existed during the writing process. I don’t know how to possibly thank our production editor, Dassi Zeidel, and copyeditor, Judy Flynn, for the tireless work they put into parsing every word and image that was sent their way. This book is infnitely better as a result of their pains. In addition, I’d like to thank our proofreader Josh Chase at Word One, indexer Ted Laux, typesetter Craig Woods, and the media developers, Laura Moss-Hollister, Shawn Patrick, and Marilyn Hummel. Thank you to my associates at Global Knowledge and CenturyLink for the support and challenges you continue to offer. —Toby Skandier www.allitebooks.com