CCNA certification all in one for dummies, 2010 edition

g Easier! Making Everythin ™ n o i t a c i f i t r e C A N C C ® N E A L L- I N - O 71 BOOKS IN • Networking Basics • Managing TCP/IP • Switching with Cisco Switches • Routing with Cisco Routers • Wireless Networks • Network Security • Wide-Area Networks (WANs) Silviu Angelescu Get More and Do More at Dummies.com ® Start with FREE Cheat Sheets Cheat Sheets include • Checklists • Charts • Common Instructions • And Other Good Stuff! To access the Cheat Sheet created specifically for this book, go to www.dummies.com/cheatsheet/ccnacert Get Smart at Dummies.com Dummies.com makes your life easier with 1,000s of answers on everything from removing wallpaper to using the latest version of Windows Check out our • Videos • Illustrated Articles • Step-by-Step Instructions Plus, each month you can win valuable prizes by entering our Dummies.com sweepstakes * Want a weekly dose of Dummies? Sign up for Newsletters on • Digital Photography • Microsoft Windows & Office • Personal Finance & Investing • Health & Wellness • Computing, iPods & Cell Phones • eBay • Internet • Food, Home & Garden Find out “HOW” at Dummies.com *Sweepstakes not currently available in all countries; visit Dummies.com for official rules CCNA Certification ® ALL-IN-ONE FOR DUMmIES ‰ by Silviu Angelescu Disclaimer: This eBook does not include ancillary media that was packaged with the printed version of the book CCNA® Certification All-in-One For Dummies® Published by Wiley Publishing, Inc 111 River Street Hoboken, NJ 07030-5774 www.wiley.com Copyright © 2010 by Wiley Publishing, Inc., Indianapolis, Indiana Published by Wiley Publishing, Inc., Indianapolis, Indiana Published simultaneously in Canada 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 permitted 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 Requests to the Publisher for permission should be addressed to the Permissions Department, John Wiley & Sons, Inc., 111 River Street, Hoboken, NJ 07030, (201) 748-6011, fax (201) 748-6008, or online at http:// www.wiley.com/go/permissions Trademarks: Wiley, the Wiley Publishing logo, For Dummies, the Dummies Man logo, A Reference for the Rest of Us!, The Dummies Way, Dummies Daily, The Fun and Easy Way, Dummies.com, Making Everything Easier, and related trade dress 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 The CompTIA Authorized Quality Curriculum logo is a proprietary trademark of CompTIA All rights reserved All other trademarks are the property of their respective owners Wiley Publishing, Inc., is not associated with any product or vendor mentioned in this book LIMIT OF LIABILITY/DISCLAIMER OF WARRANTY: THE PUBLISHER AND THE AUTHOR MAKE NO REPRESENTATIONS OR WARRANTIES WITH RESPECT TO THE ACCURACY OR COMPLETENESS OF THE CONTENTS OF THIS WORK AND SPECIFICALLY DISCLAIM ALL WARRANTIES, INCLUDING WITHOUT LIMITATION WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE NO WARRANTY MAY BE CREATED OR EXTENDED BY SALES OR PROMOTIONAL MATERIALS THE ADVICE AND STRATEGIES CONTAINED HEREIN MAY NOT BE SUITABLE FOR EVERY SITUATION THIS WORK IS SOLD WITH THE UNDERSTANDING THAT THE PUBLISHER IS NOT ENGAGED IN RENDERING LEGAL, ACCOUNTING, OR OTHER PROFESSIONAL SERVICES IF PROFESSIONAL ASSISTANCE IS REQUIRED, THE SERVICES OF A COMPETENT PROFESSIONAL PERSON SHOULD BE SOUGHT NEITHER THE PUBLISHER NOR THE AUTHOR SHALL BE LIABLE FOR DAMAGES ARISING HEREFROM THE FACT THAT AN ORGANIZATION OR WEBSITE IS REFERRED TO IN THIS WORK AS A CITATION AND/OR A POTENTIAL SOURCE OF FURTHER INFORMATION DOES NOT MEAN THAT THE AUTHOR OR THE PUBLISHER ENDORSES THE INFORMATION THE ORGANIZATION OR WEBSITE MAY PROVIDE OR RECOMMENDATIONS IT MAY MAKE FURTHER, READERS SHOULD BE AWARE THAT INTERNET WEBSITES LISTED IN THIS WORK MAY HAVE CHANGED OR DISAPPEARED BETWEEN WHEN THIS WORK WAS WRITTEN AND WHEN IT IS READ For general information on our other products and services, please contact our Customer Care Department within the U.S at 877-762-2974, outside the U.S at 317-572-3993, or fax 317-572-4002 For technical support, please visit www.wiley.com/techsupport Wiley also publishes its books in a variety of electronic formats Some content that appears in print may not be available in electronic books Library of Congress Control Number: 2010922557 ISBN: 978-0-470-48962-8 Manufactured in the United States of America 10 About the Authors Silviu Angelescu is a network and software engineer, consultant and technical trainer, specialized in data networks, storage networks and virtualization He has worked as network and software engineer, consultant and corporate trainer for more than ten years at various high-tech companies and academic institutions, such as, Network Appliance (NetApp), Computer Associates (CA), CGI, Dawson College, and the University of Montreal Silviu also ran a consulting business for training organizations, designing, developing, and deploying scheduling software and network services He graduated in Computer Science at the University of Montreal and is currently an engineer and trainer in the Research Triangle Park, in North Carolina, USA Andrew Swerczek is a network engineer, computer lab instructor, and technical writer with over twenty years experience in the Information Technology field He has worked for various governmental agencies and contractors including the US Department of Defense and Wang Laboratories Andrew has achieved many IT industry certifications such as CCNA, CNE, CNA, CIW, DCSNP, NACA, FCA, IBA, i-Net+, Network+, Server+, and A+ He is a graduate from the London School of Journalism, owns a small business, and currently resides in the Harz Mountains region, in Germany Author’s Acknowledgments I would like to thank Katie Feltman, Pat O’Brien, John Edwards, and Bruce Tomlin: thanks for your hard work, support and patience A lot of work goes into publishing and producing a book: I want to thank everyone at Wiley who worked behind the scenes to keep this project on track and make it happen I also want to thank Andrew Swerczek for his hard work and contribution to this book: Chapters one to five in Book II, Chapters one to four in Book VI, Chapters one to four in Book VII Thanks also to Ed Tetz for his contribution: Chapters two to five in Book V Publisher’s Acknowledgments We’re proud of this book; please send us your comments at http://dummies.custhelp.com For other comments, please contact our Customer Care Department within the U.S at 877-762-2974, outside the U.S at 317-572-3993, or fax 317-572-4002 Some of the people who helped bring this book to market include the following: Acquisitions, Editorial, and Media Development Composition Services Project Editor: Pat O’Brien Project Coordinator: Katie Crocker Senior Acquisitions Editor: Katie Feltman Layout and Graphics: Christin Swinford, Christine Williams Copy Editor: John Edwards Proofreaders: Jessica Kramer, Toni Settle Technical Editor: Bruce Tomlin Indexer: Broccoli Information Mgt Editorial Manager: Kevin Kirschner Special Help: Anne Sullivan Media Development Project Manager: Laura Moss-Hollister Media Development Assistant Project Manager: Jenny Swisher Media Development Associate Producer: Shawn Patrick Editorial Assistant: Amanda Graham Sr Editorial Assistant: Cherie Case Cartoons: Rich Tennant (www.the5thwave.com) Publishing and Editorial for Technology Dummies Richard Swadley, Vice President and Executive Group Publisher Andy Cummings, Vice President and Publisher Mary Bednarek, Executive Acquisitions Director Mary C Corder, Editorial Director Publishing for Consumer Dummies Diane Graves Steele, Vice President and Publisher Composition Services Debbie Stailey, Director of Composition Services The logo of the CompTIA Authorized Quality Curriculum (CAQC) program and the status of this or other training materials as “Authorized” under the CompTIA Authorized Quality Curriculum program signifies that, in CompTIA’s opinion, such training material covers the content of CompTIA’s related certification exam The contents of this training material were created for the CompTIA A+ Certification exam covering CompTIA certification objectives that were current as of 2009 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 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Examination Objectives 891 Index 897 xxvi CCNA Certification All- in- One For Dummies Introduction T he CCNA certification will serve as a basic foundation for a number of other certifications... Publishing, Inc 111 River Street Hoboken, NJ 07030-5774 www.wiley.com Copyright © 2010 by Wiley Publishing, Inc., Indianapolis, Indiana Published by Wiley Publishing, Inc., Indianapolis, Indiana... Transmitting Unicast, Multicast, and Broadcast 307 xvi CCNA Certification All- in- One For Dummies Chapter 2: Managing a Switch Using Cisco IOS 313 Best Practice for Using Cisco