Network+ Study Guide

David Groth Todd Lammle William Tedder

San Francisco  •  London

Associate Publisher: Neil Edde Acquisitions and Developmental Editor: Elizabeth Hurley-Peterson Editors: Donna Crossman, Susan Berge Production Editor: Mae Lum, Elizabeth Campbell Technical Editors: Andre Paree-Huff, Louis DiPaola Book Designer: Bill Gibson Graphic Illustrator: Tony Jonick Electronic Publishing Specialists: Jim Link of Interactive Composition Corporation, Scott Benoit Proofreaders: Emily Hsuan, Yariv Rabinovitch, Laurie O’Connell, David Nash, Nancy Riddiough, Amey Garber Indexer: Ted Laux CD Coordinator: Dan Mummert CD Technician: Kevin Ly Cover Designer: Archer Design Cover Photographer: Natural Selection

Copyright © 2003 SYBEX Inc., 1151 Marina Village Parkway, Alameda, CA 94501. World rights reserved. No part of this publication may be stored in a retrieval system, transmitted, or reproduced in any way, including but not limited to photocopy, photograph, magnetic, or other record, without the prior agreement and written permission of the publisher.

An earlier version of this book was published under the title Network + Study Guide, Third Edition

Library of Congress Card Number: 2003105191

ISBN: 0-7821-4275-3

SYBEX and the SYBEX logo are either registered trademarks or trademarks of SYBEX Inc. in the United States and/or other countries.

Screen reproductions produced with Collage Complete.Collage Complete is a trademark of Inner Media Inc.

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The CD interface was created using Macromedia Director, COPYRIGHT 1994, 1997–1999 Macromedia Inc. For more information on Macromedia and Macromedia Director, visit http://www.macromedia.com.

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The logo of the CompTIA Authorized Quality Curriculum Program and the status of this or other training material as “Authorized” under the CompTIA Authorized Curriculum Program signifies that, in CompTIA’s opinion, such training material covers the content of the CompTIA’s related certification exam. CompTIA has not reviewed or approved the accuracy of the contents of this training material and specifically disclaims any warranties of merchantability or fitness for a particular purpose. CompTIA makes no guarantee concerning the success of persons using any such “Authorized” or other training material in order to prepare for any CompTIA certification exam.

The contents of this training material were created for the CompTIA Network+ exam covering CompTIA certification exam objectives that were current as of June 2001.

How to Become CompTIA Certified:

This training material can help you prepare for and pass a related CompTIA certification exam or exams. In order to achieve CompTIA certification, you must register for and pass a CompTIA certification exam or exams.

In order to become CompTIA certified, you must:

• Select a certification exam provider. For more information, please visit http://www.comptia.org/certification/test_locations.htm.

• Register for and schedule a time to take the CompTIA certification exam(s) at a convenient location.

• Read and sign the Candidate Agreement, which will be presented at the time of the exam(s). The text of the Candidate Agreement can be found at www.comptia.org/certification.

• Take and pass the CompTIA certification exam(s).

For more information about CompTIA’s certifications, such as their industry acceptance, benefits, or program news, please visit www.comptia.org/certification.

CompTIA is a non-profit information technology (IT) trade association. CompTIA’s certifications are designed by subject matter experts from across the IT industry. Each CompTIA certification is vendor-neutral, covers multiple technologies, and requires demonstration of skills and knowledge widely sought after by the IT industry.

To contact CompTIA with any questions or comments:

Please call + 1 630 268 1818

questions@comptia.org

TRADEMARKS: SYBEX has attempted throughout this book to distinguish proprietary trademarks from descriptive terms by following the capitalization style used by the manufacturer.

The author and publisher have made their best efforts to prepare this book, and the content is based upon final release software whenever possible. Portions of the manuscript may be based upon pre-release versions supplied by software manufacturer(s). The author and the publisher make no representation or warranties of any kind with regard to the completeness or accuracy of the contents herein and accept no liability of any kind including but not limited to performance, merchantability, fitness for any particular purpose, or any losses or damages of any kind caused or alleged to be caused directly or indirectly from this book.

Manufactured in the United States of America

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To Our Valued Readers:

CompTIA’s Network+ certification program has established itself as the premier general networking certification in the IT industry. Sybex is proud to have helped thousands of Network+ candidates prepare for their exam, and we are excited about the opportunity to continue to provide people with the skills they’ll need to succeed in the highly competitive IT industry. In this enhanced edition, you will find our Network + Virtual Lab. With it you can create your own virtual network and access simulated operating system interfaces. This hands-on component will give you the confidence you need.

Last year, CompTIA revised the Network+ exam, updating the objectives set, expanding the question pool, and adding select-and-place questions formats, all in an effort to prevent the dreaded paper-certification syndrome, one in which individuals obtain a certification without a thorough understanding of the technology. Sybex supports this philosophy, as we have always advocated a comprehensive instructional approach to certification courseware. It has always been Sybex’s mission to teach exam candidates how new technologies work in the real world, not to simply feed them answers to test questions.

We’re especially excited about this Deluxe Edition of our best-selling Network+ Study Guide, as it now sports the CompTIA Authorized Quality Curriculum (CAQC) logo on the cover. CompTIA developed the CAQC program to help exam candidates make better decisions about which training materials to use, and has established rigorous standards that courseware developers must meet in order to display the CAQC logo. The book you hold in your hands went through a review process that checked for exam objective correlation and instructional design integrity, and we are happy to say that we passed with flying colors! We’re confident that this book will help you, the Network+ exam candidate, succeed in your endeavors.

Good luck in pursuit of your Network+ certification!

Neil EddeAssociate Publisher—CertificationSybex, Inc.

To my wonderful book team members. Thanks for your help in making our book a success.

—David Groth

SYBEX Inc. 1151 Marina Village Parkway, Alameda, CA 94501          Tel: 510/523-8233     Fax: 510/523-2373     HTTP://www.sybex.com