CompTIA A+ Certification: Practical Application, 2009 Edition, Revised President, Axzo Press: Vice President, Product Development: Vice President, Operations: Director of Publishing Systems Development: Writer: Copyeditor: Keytester: Jon Winder Charles G. Blum Josh Pincus Dan Quackenbush Andrew LaPage Ken Maher Judi Kling COPYRIGHT © 2011 Axzo Press. All rights reserved. No part of this work may be reproduced, transcribed, or used in any form or by any meansgraphic, electronic, or mechanical, including photocopying, recording, taping, Web distribution, or information storage and retrieval systemswithout the prior written permission of the publisher. For more information, go to www.axzopress.com.