Table Of Content®
CCNA
Routing and Switching
Study Guide
®
CCNA
Routing and Switching
Study Guide
Todd Lammle
Senior Acquisitions Editor: Jeff Kellum
Development Editor: Pete Gaughan
Technical Editors: John Swartz and Dax Mickelson
Production Editor: Christine O’Connor
Copy Editor: Judy Flynn
Editorial Manager: Pete Gaughan
Production Manager: Tim Tate
Vice President and Executive Group Publisher: Richard Swadley
Associate Publisher, Sybex: Chris Webb
Media Project Manager I: Laura Moss-Hollister
Media Associate Producer: Marilyn Hummel
Media Quality Assurance: Doug Kuhn
Book Designers: Judy Flynn and Bill Gibson
Compositor: Craig Woods, Happenstance Type-O-Rama
Proofreader: Sarah Kaikini, Word One New York
Indexer: Robert Swanson
Project Coordinator, Cover: Katherine Crocker
Cover Designer: Ryan Sneed
Copyright © 2013 by John Wiley & Sons, Inc., Indianapolis, Indiana
Published by John Wiley & Sons, Inc. Indianapolis, Indiana
Published simultaneously in Canada
ISBN: 978-1-118-74961-6
ISBN: 978-1-118-74973-9 (ebk.)
ISBN: 978-1-118-74970-8 (ebk.)
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Dear Reader,
Thank you for choosing CCNA Routing and Switching Study Guide. 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 con-
sistently exceptional books. With each of our titles, we’re working hard to set a new standard
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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
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Acknowledgments
There are many people that work to put a book together, and as an author, I dedicated an
enormous amount of time to write this book, but it would have never been published with-
out the dedicated, hard work of many other people.
Monica Worthy Lammle was crucial to the fnished product this book became, going
over every word of every chapter with me to fne-tune the language and grammar. Without
Monica’s support in all areas of my life, I’d never have fnished writing this book.
Next in line to thank is my new technical editor, John Swartz, who also coauthored
the CCNA Data Center study guides with me. His expertise in the Cisco technical feld,
and his history of networking in general, is second to none. His detailed analysis of my
work helped make this my best CCNA study guide ever. Thank you, John, for working
hard under pressure, with tight deadlines, and for staying the course of delivering high-
quality work in a short time frame.
Jeff Kellum, my acquisitions editor, is instrumental to my success in the world of Cisco
certifcation. Jeff, I look forward to our continued progress together.
Christine O’Connor, my production editor, and Judy Flynn, my copyeditor, were my
rock and foundation for formatting an intense editing of every page in this book. This
amazing team gives me the confdence to help keep me moving during the diffcult and very
long days, week after week. How Christine stays so organized with all my changes, as well
as making sure every fgure is in the right place in the book is still a mystery to me! You’re
amazing, Christine! Thank you! Judy understands my writing style so well now, after doing
at least a dozen books with me, that she even sometimes fnds a technical error that may
have slipped through as I was going through the material. Thank you Judy for doing such
a great job! I truly thank you both.
Troy McMillian really helped me on this book (on all books actually!) by working on
the review and bonus questions, fash cards, as well as a 3rd technical edit on the last stage
of editing. He did a high-quality job in a short time! Thanks, Troy! Jim Frey and Paul
Sutton really helped me put together this book’s amazing fgures, and an all-around second-
look technical edit. Thank you both!
Also, thanks to Dax Mickelson and Dennis Frye for performing the technical proofread
of the book.
Finally, a big thanks to Craig Woods at Happenstance-Type-O-Rama and to the Sybex
media-development team.
About the Author
Todd Lammle is the authority on Cisco certifcation and internetworking and is Cisco certi-
fed in most Cisco certifcation categories. He is a world-renowned author, speaker, trainer,
and consultant. Todd has three decades of experience working with LANs, WANs, and large
enterprise licensed and unlicensed wireless networks, and lately he’s been implementing large
Cisco data centers worldwide. His years of real-world experience is evident in his writing; he
is not just an author but an experienced networking engineer with very practical experience
working on the largest networks in the world, at such companies as Xerox, Hughes Aircraft,
Texaco, AAA, Cisco, and Toshiba, among many others. Todd has published over 60 books,
including the very popular CCNA: Cisco Certifed Network Associate Study Guide, CCNA
Wireless Study Guide, and CCNA Data Center Study Guide, all from Sybex. He runs an
international consulting and training company based in Colorado, Texas, and San Francisco.
You can reach Todd through his forum and blog at www.lammle.com.