CCNA INTRO: Introduction to Cisco Networking Technologies Study Guide (Exam 640-821)

509 Pages·2006·15.512 MB·English

by  Todd Lammle, William Tedder

68507.book Page i Tuesday, September 5, 2006 1:53 PM
CCNA INTRO
®
Introduction to Cisco®
Networking Technologies
Study Guide
Todd Lammle
Wiley Publishing, Inc.
68507.book Page vi Tuesday, September 5, 2006 1:53 PM
68507.book Page i Tuesday, September 5, 2006 1:53 PM
CCNA INTRO
®
Introduction to Cisco®
Networking Technologies
Study Guide
Todd Lammle
Wiley Publishing, Inc.
68507.book Page ii Tuesday, September 5, 2006 1:53 PM
Acquisitions and Development Editor: Jeff Kellum
Technical Editor: Patrick Bass
Production Editor: Martine Dardignac
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
Permissions Editor: Laura Carpenter VanWinkle
Media Development Specialist: Steven Kudirka
Book Designers: Judy Fung and Bill Gibson
Compositor: Craig Woods, Happenstance Type-O-Rama
Proofreader: Nancy Riddiough
Indexer: Nancy Guenther
Cover Designer: Ryan Sneed
Copyright © 2006 by Wiley Publishing, Inc., Indianapolis, Indiana
Published simultaneously in Canada
ISBN-13: 978-0-470-06850-2
ISBN-10: 0-470-06850-7
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To Our Valued Readers:
Thank you for looking to Sybex for your CCNA Introduction to Cisco Networking Tech-
nologies (INTRO) 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. Certification candidates have come to rely on Sybex for
accurate and accessible instruction on today’s crucial technologies and business skills.
Just as Cisco is committed to establishing measurable standards for certifying Cisco Certified
Network Administrators (CCNAs), Sybex is committed to providing those individuals with
the knowledge needed to meet those standards.
The author and editors have worked hard to ensure that this edition of CCNA INTRO: Intro-
duction to Cisco Networking Technologies Study Guide you hold in your hands is
comprehensive, in depth, and pedagogically sound. We’re confident that this book will exceed
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succeed in your endeavors.
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Neil Edde
Vice President and Publisher
Sybex, an Imprint of Wiley
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To all the great food and friends at Bone Daddy’s Barbeque in Dallas, Texas!
All my thanks!
Acknowledgments
For trying to keep me going in a straight line, I need to thank Neil Edde. It is no small
accomplishment, and I applaud him for his patience and dedication to our vision.
Jeff Kellum was instrumental in the success of this book. Without his hard work and focused
attention to producing a flawless product, it would never have come together as quickly as it did.
Jeff has an almost magical ability to keep me working even under immense pressure at times and
has been a solid asset in making this a powerful, high-quality book. Thank you!
In addition, Martine Dardignac and Judy Flynn made the editorial process a breeze! I’ll
work with this team any time!
I also want to thank my technical editor, Patrick Bass. His dedicated, concise comments
have been invaluable and have made this a better book.
Thanks also to the CD team, whose hard work has resulted in a power-packed, good-looking
CD test engine. Thanks also to the proofreader, Nancy Riddiough; the indexer, Nancy Guenther;
and the compositor Craig Woods of Happenstance Type-O-Rama.
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Contents at a Glance
Introduction xv
Assessment Test xxiii
Chapter 1 Internetworking 1
Chapter 2 Internet Protocols 63
Chapter 3 IP Subnetting and Variable Length Subnet Masks
(VLSMs) and Troubleshooting IP 105
Chapter 4 Introduction to the Cisco IOS 151
Chapter 5 IP Routing 213
Chapter 6 Dynamic Routing Protocols 253
Chapter 7 Layer 2 Switching 289
Chapter 8 Managing a Cisco Internetwork 315
Chapter 9 Wide Area Networking Protocols 377
Glossary 401
Index 461
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Contents
Introduction xv
Assessment Test xxiii
Chapter 1 Internetworking 1
Internetworking Basics 3
Internetworking Models 10
The Layered Approach 11
Advantages of Reference Models 11
The OSI Reference Model 12
The Application Layer 14
The Presentation Layer 15
The Session Layer 15
The Transport Layer 15
The Network Layer 21
The Data Link Layer 23
The Physical Layer 29
Ethernet Networking 30
Half- and Full-Duplex Ethernet 32
Ethernet at the Data Link Layer 33
Ethernet at the Physical Layer 36
Ethernet Cabling 38
Straight-Through Cable 38
Crossover Cable 39
Rolled Cable 39
Data Encapsulation 42
The Cisco Three-Layer Hierarchical Model 46
The Core Layer 47
The Distribution Layer 48
The Access Layer 48
Summary 49
Exam Essentials 49
Written Lab 1 50
Written Lab 1.1: OSI Questions 50
Written Lab 1.2: Defining the OSI Layers and Devices 52
Written Lab 1.3: Identifying Collision and
Broadcast Domains 52
Review Questions 54
Answers to Review Questions 58
Answers to Written Lab 1 60
Answer to Written Lab 1.2 61
Answers to Written Lab 1.3 61