CCNA Electronic Book 6th edition

1012 Pages·2007·38.3 MB·English

by  Todd Lammle

10089.book Page i Monday, July 23, 2007 3:17 PM
Advance Praise
“Todd’s methods of discussing topics are tactfully approached so they are not confusing to
the reader, and his explanations are clear and easy to understand.”
—Amazon Reader Review
“I passed my CCNA on the first try after reading this book thoroughly. …If you read the
book and do all the review questions and written labs at the end of each chapter, you will
be well prepared for the exam.”
—Amazon Reader Review
“This is a great book! Todd Lammle has the ability to make complex topics simple. Cisco
books are essential once you’ve mastered networking basics, but there is nothing like Sybex
for learning the concepts from A to Z.”
—Amazon Reader Review
“Todd has been an authority in this field for as long as I can remember. His style of writing
keeps the book from becoming a sleep aid and provides nuts and bolts information that is both
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taking the CCNA exam, you would be ill advised to not give this book a thorough read.”
—Amazon Reader Review
“This is the first book review I have ever written on Amazon. I’ve been in the computer/net-
work support field for many years, but had almost no contact with Cisco equipment. I basi-
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exam on the first try, saving almost $2900!”
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“This is the best technical book I have ever read!!”
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“This book is excellent resource for preparation for CCNA certification. It has needed infor-
mation regarding the Cisco’s objective. Sample test and Bonus Test give extra knowledge for
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—Amazon Reader Review
10089.book Page ii Monday, July 23, 2007 3:17 PM
“I’ve recently passed the CCNA exam with 985 out of 1000 points and Todd Lammle’s
book was my only study material (along with a Cisco 2500 router).
“It covers all relevant topics in such an easy-to-understand way and gives you a great net-
working/Cisco knowledge to build upon. Even now, while I’m pursuing other certifications,
it serves as an irreplaceable reference. Every chapter concludes with review questions,
hands-on exercises or labs to give you the opportunity of applying your new skills in real-
world scenarios and the CD provides additional sample tests and flashcards to consolidate
your knowledge.
“By reading the book twice and doing all the exercises you will be able to answer just about
any question you may encounter on the exam. Highly recommended!”
—Amazon Reader Review
“I had made three previous attempts using Cisco Press but could not get over the hump.
Needless to say I was getting pretty discouraged. However, I had heard good things about
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have done. The book read great and it explained the required concepts and topics very well.
The review questions and Hand-on Labs at the end of each chapter were also very helpful.
“I took the test last weekend and passed!!
“Thank you!!”
—Amazon Reader Review
“Good exam prep. I read this book and with only slight network experience was able to pass
the CCNA.”
—Amazon Reader Review
“There isn’t much more I can say about this book than has already been said. I used Todd’s
guide to help me pass the CCNA in 2000 and am using him again to recertify. Just an excel-
lent book. Period.”
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“This book covered everything I needed to pass the exam, with hands-on experience, and the
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CCNA :
®
Cisco® Certified
Network Associate
Study Guide
Sixth Edition
Todd Lammle
Wiley Publishing, Inc.
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Acquisitions Editor: Jeff Kellum
Development Editor: Toni Zuccarini Ackley
Technical Editor: Patrick J. Conlan
Production Editor: Sarah Groff-Palermo
Copy Editor: Judy Flynn
Production Manager: Tim Tate
Vice President and Executive Group Publisher: Richard Swadley
Vice President and Executive Publisher: Joseph B. Wikert
Vice President and Publisher: Neil Edde
Media Project Supervisor: Laura Atkinson
Media Development Specialist: Josh Frank
Media Quality Assurance: Angie Denny
Book Designers: Judy Fung and Bill Gibson
Compositor: Craig Woods, Happenstance Type-O-Rama
Proofreader: Nancy Riddiough
Indexer: Ted Laux
Anniversary Logo Design: Richard Pacifico
Cover Designer: Ryan Sneed
Copyright © 2007 by Wiley Publishing, Inc., Indianapolis, Indiana
Published simultaneously in Canada
ISBN: 978-0-470-11008-9
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
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Drive, Danvers, MA 01923, [phone], fax [phone]. Requests to the Publisher for permission should
be addressed to the Legal Department, Wiley Publishing, Inc., 10475 Crosspoint Blvd., Indianapolis, IN 46256,
[phone], fax [phone], or online at http://www.wiley.com/go/permissions.
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
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mentioned in this book.
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To Our Valued Readers:
Thank you for looking to Sybex for your CCNA exam prep needs. We at Sybex are proud
of our reputation for providing certification candidates with the practical knowledge and
skills needed to succeed in the highly competitive IT marketplace. This latest edition of the
best-selling CCNA: Cisco Certified Network Associate Study Guide reflects our commit-
ment to provide CCNA candidates with the most up-to-date, accurate, and accessible
instructional material on the market.
As with previous editions, Todd and the editors have worked hard to ensure that the study
guide you hold in your hands is comprehensive, in-depth, and pedagogically sound. We’re
confident that this book will exceed the demanding standards of the certification market-
place and help you, the CCNA certification candidate, succeed in your endeavors.
As always, your feedback is important to us. If you believe you’ve identified an error in the
book, please visit the Customer Support section of the Wiley website. And if you have general
comments or suggestions, feel free to drop me a line directly at [email protected]. At Sybex,
we’re continually striving to meet the needs of individuals preparing for certification exams.
Good luck in pursuit of your CCNA certification!
Neil Edde
Publisher—Certification
Sybex, an Imprint of Wiley
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Acknowledgments
Monica Lammle’s writing style and voice, editing ability, encouragement, and dedication to
ensuring that my books are concise yet highly readable has been invaluable to the success of
this and many other projects. She brings clarity and life to what can truly be some very arcane
and difficult material!
Mr. Patrick Conlan has got to be the personification of perseverance—he’s a rock! Patrick
literally hashed and rehashed each topic in this guide with me at all hours of the day and
night—scrutinizing the material until we both agreed it was verifiably solid. He was so instru-
mental in the development of this book that I hired him at GlobalNet Training to work as a
course developer and trainer! You’re going to be hearing a lot more from Mr. Conlan in the
technical instruction and writing arena in the future for sure.
Daniel Aguilera, who has worked with me at GlobalNet Training for seven years, also
worked diligently, helping me put together the bonus exams you’ll find on the CD (so be sure
to give him a call if you happen to find a problem <G>). Dan possesses both the intelligence
and optimism required to be a great source of encouragement and a deep reservoir of problem-
solving ability whenever I found myself discouraged or burned out.
Toni Zuccarini Ackley was the main editor of this—the newest book in the Sybex Cisco
series. Thank you Toni for having the patience of Job, and for working so hard on this book
with me. I’m so happy (and relieved) that you took on the job and, most of all, that you didn’t
run screaming from the room the next day!
Jeff Kellum is instrumental to my success in the Cisco world and is my acquisitions editor.
Jeff, thanks for your guidance and continued patience. Although we work well together and put
out fantastic material, I am sure he groans when he sees my name on caller ID!
In addition, Sarah Groff-Palermo was an excellent production editor and she worked really
hard to get the book done as quickly as possible, without missing the small mistakes that are
so easy to over look. Judy Flynn was the copy editor and she showed me that you can actually
write a book and still have patience, be helpful but yet work extremely hard to get this book
out on the shelves as fast as possible, and for that I thank you tremendously. Both Sarah and
Judy worked very hard editing the book for what will hopefully turn out to be a great guide
to lead you on your journey toward becoming a CCNA.
Finally a big thanks to Craig Woods and Happenstance-Type-O-Rama, and the CD team:
Laura Atkinson, Josh Frank, and Angie Denny.
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Contents at a Glance
Introduction xxiii
Assessment Test xxxiii
Chapter 1 Internetworking 1
Chapter 2 Introduction to TCP/IP 67
Chapter 3 Subnetting, Variable Length Subnet Masks (VLSMs), and
Troubleshooting TCP/IP 111
Chapter 4 Cisco’s Internetworking Operating System (IOS) and
Security Device Manager (SDM) 171
Chapter 5 Managing a Cisco Internetwork 251
Chapter 6 IP Routing 327
Chapter 7 Enhanced IGRP (EIGRP) and Open Shortest Path
First (OSPF) 417
Chapter 8 Layer 2 Switching and Spanning Tree Protocol (STP) 493
Chapter 9 Virtual LANs (VLANs) 551
Chapter 10 Security 609
Chapter 11 Network Address Translation (NAT) 669
Chapter 12 Cisco’s Wireless Technologies 703
Chapter 13 Internet Protocol Version 6 (IPv6) 739
Chapter 14 Wide Area Networks 773
Glossary 851
Index 911
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