CCNA官方原版教材

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Cisco CCENT/CCNA ICND1 100-101 Official Cert Guide Wendell odom CCIE No 1624 Copyright c 2013 Pearson Education, Inc Published by Cisco press 800 East 96th Street Indianapolis in 46240 USA All rights reserved. No part of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage and retrieval system, without written permission from the publisher, except for the inclusion of brief quotations in a review. Printed in the United states of america First Printing April 2013 Library of Congress Cataloging-in-Publication data is on file ISBN-13:978-1-58714-385-4 ISBN-10:1-58714-385-2 Warning and Disclaimer This book is designed to provide information about the cisco 100-101 ICNDI and 200-120 CCNa exams. Every effort has been made to make this book as complete and as accurate as possible, but no warranty or fitness is implied The information is provided on an"as is "basis. The authors, Cisco Press, and Cisco Systems, Inc shall have neither liability nor responsibility to any person or entity with respect to any loss or damages arising from the information contained in this book or from the use of the discs or programs that may accompany it The opinions expressed in this book belong to the author and are not necessarily those of cisco Systems, Inc Trade mark Acknowledgments all terms mentioned in this book that are known to be trademarks or service marks have been appropriately capitalized. Cisco Press or Cisco Systems, Inc, cannot attest to the accuracy of this information. USe of a term in this book should not be regarded as affecting the validity of any trademark or service mark Images in Figures 2-7(2960S-F48TS-L Switch), 2-8, and 7-1 used with permission from Cisco Systems, Inc Corporate and government Sales The publisher offers excellent discounts on this book when ordered in quantity for bulk purchases or special sales, which may include electronic versions and/or custom covers and content particular to your business, training goals, marketing focus, and branding interests. For more information, please contact: U.S. Corporate and Government Sales I-800-382- 3419corpsales(apearsontechgroup.com For sales outside the united states, please contact: International Salesinternational@pearsoned.com Feedback information At Cisco Press, our goal is to create in-depth technical books of the highest quality and value. Each book is crafted with care and precision, undergoing rigorous development that involves the unique expertise of members from the professional technical community Readers' feedback is a natural continuation of this process. If you have any comments re garding how we could improve the quality of this book, or otherwise alter it to better suit your needs, you can contactusthroughemailatfeedback(@ciscopress.com.Pleasemakesuretoincludethebooktitleand isBN in your message We greatly appreciate your assistance Publisher: Paul boger Associate publisher: dave dusthimer Business Operation Manager, Cisco Press: Jan Cornelssen Executive Editor: Brett bartow Managing editor: Sandra Schroeder Development Editor: Andrew Cupp Senior proiect editor: Tonya simpson Copy Editor: John edwards Technical editor: elan beer Editorial assistant: vanessa evans Book Designer: Mark Shirar Illustrator: Michael Tanamachi Composition: Studio galou Indexer: Tim Wright Proofreader. sheri cain nl.lI CISCO Americas Headquarters Cisco systems. Inc San jose. ca Asia Pacific Headquarters Cisco Systems (USA)Pte. Ltd Si Ingapore Europe Headquarters Cisco Systems International BV Amsterdam, The Netherlands Cisco has more than 200 offices worldwide. Addresses, phone numbers and fax numbers are listed ontheCiscoWebsiteatwww.cisco.com/go/offices CCDE, CCENT, Cisco Eos, Cisco HealthPresence, the Cisco logo, Cisco Lumin, Cisco Nexus, Cisco Stadium Vision, Cisco Telepresence, Cisco WebEx, dCe, and welcome to the human Network are trademarks; Changing the Way We Work, Live, Play, and Learn and Cisco Store are service marks and Access Registrar, Aironet, Asyncos, bringing the Meeting To You, Catalyst, CCDA, CCDP CCIE, CCIP, CCNA, CCNP, CCSP, CCVP, Cisco, the Cisco Certified Internetwork Expert logo Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity Collaboration Without Limitation, Ether Fast, EtherSwitch, Event Center, Fast Step Follow Me Browsing, FormShare, GigaDrive, HomeLink, Internet Quotient, IOS, iPhone, iQuick Study, IronPort, the IronPort logo, LightStream, Linksys, Media Tone, MeetingPlace, Meeting Place Chime Sound MGX, Networkers, Networking Academy. Network Registrar, PCNow, PIX, PowerPanels ProConnect, ScriptShare, Sender Base, SMARTnet, Spectrum Expert, Stack Wise, The Fastest Way to Increase Your Internet Quotient, TransPath, WebEx, and the Web ex logo are registered trademarks of Cisco Systems, Inc and/or its affiliates in the United States and certain other countries All other trademarks menti oned in this document or website are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (0812R) About the author Wendell odom, CCIE No. 1624, has been in the networking industry since 1981. He has worked as a netw ork engineer, consul tant, systems engineer, instructor, and course developer he currently works writing and creating certification tools. He is author of all the previous books in the Cisco Press CCNA Official Certification Guide series, as well as the CCNP route 642-902 Official Certification Guide, the (os 642-642 Exam Certification Guide, coauthor of the CCTE Routing and Switch official certification Guide, and several other titles. he is also a consul tant for the CCna 640-802 Network Simulator from Pearson and for a forthcoming replacement version of that product Hemaintainsstudytoolslinkstohisblogs,andotherresourcesatwww.certskills.com About the technical reviewer Elan beer, CCIE No 1837, is a senior consultant and cisco instructor specializing in data center architecture and multiprotocol network design. For the past 25 years, Elan has designed networks and trained thousands of industry experts in data center architecture, routing, and switching. Elan has been instrumental in large-scale professional service efforts designing and troubleshooting internetworks performing data center and network audits, and assisting clients with their short- and long-term design objectives. Elan has a global perspective of network architectures through his international clientele Elan has used his expertise to design and troubleshoot data centers and internetworks in Malaysia North America, Europe, Australia, Africa, China, and the Middle east. Most recently, Elan has been focused on data center design, configuration, and troubleshooting as well as service provider technologies. In 1993, elan was among the first to obtain the Cisco Certified System Instructor (CCSD certification, and in 1996, Elan was among the first to attain Cisco System's highest technical certification, the Cisco Certified Internetworking Expert. Since then, Elan has been involved in numerous large-scale data center and telecommunications networking projects worldwide Dedication In memory of William E. York: Moms dad, PawPaw, wearing blue-jean overalls, always smiling tagging along at the water works, fishing on Juliet Lake, the Cataw ba worm tree, and his big-belly laugh Acknowledgments While this book is published as a first edition for various reasons, this book and the companion Cisco CCNA Routing and Switching ICND2 200-101 Oficial Cert Guide represent the seventh books in a long line of Cisco Press books focused on helping people pass the CCent and CCNa routing and Switching certifications. Given the long history, many people have worked on these books from their inception back in 1998. To those many people who have touched these books over these past 15 years -technical edits, development, copyedits, project editing, proofing, indexing, managing the production process, interior design, cover design, marketing, and all the other details that happen to get these books out the door-thanks so much for playing a role in this ccent/ccna franchise Many of the contributors to the previous editions returned to work on creating these new editions, including Development editor Drew Cupp. drew kept all the details straight, with my frequent changes to the outlines and titles, keeping the sequencing on track, while still doing his primary job keeping the text and features clear and consistent throughout the book. Thanks, Drew, for walking me through the development As for the technical editor, Elan beer did his normal job. That is, he did his usual amazing job of doing every part of the technical edit job well, from finding the tiny little cross-reference errors that sit pages apart, to anticipating how readers might misunderstand certain phrasing, to being all over the details of every technical feature Fantastic job as usual--thanks, elan. Brett Bartow again served as executive editor on the book as he has almost since the beginning of these titles. When my family has asked me over the years about brett's role with these books, the best single word definition is "teammate Brett might be employed at Pearson Education, but he is always working with me and for me, watching out for the business end of the books and finding ways to make the publisher/author relationship work seamlessly. Thanks for another great ride through these books Brett Word docs go in and out come these beautiful finished products. Thanks to Sandra Schroeder, Tonya Simpson, and all the production team for working through the magic that takes those word docs and makes the beautiful finished product From fixing all my grammar, crummy word choices, and passive-voice sentences, and then pulling the design and layout together, they do it all--thanks for putting it all together and making it look easy. And Tonya, managing the details through several process steps for roughly 100 elements between the pair of ccna books in a short time frame- thanks for the amazing juggling act! And thanks especially for the attention to detail The figures for these books go through a little different process than they do for other books. Together we invested a large amount of labor in updating the figures for these books, both for the design, the volume of figures, and for the color versions of the figures for the electronic versions of the books. a special thanks goes out to Laura Robbins for working with me on the color and design standards early in the process. Also, thanks to Mike Tanamachi for drawing all the figures so well-and then redrawing them every time I changed my mind about something Thanks to Chris burns of Certskills for all the work on the mind maps both those used in the final product and those used to build the book, as well as for being a bit of a test case for some of the chapters A special thanks you to you readers who write in with suggestions, possible errors, and especially those of you who post online at the Cisco Learning Network. without question, the comments I receive directly and overhear by participating at cln made this edition a better book Thanks to my wife, Kris. Book schedules have a bigger impact that i would like but you alw ays make t work. Thanks to my daughter, hannah, for all the great study/work breaks on some of these busy school days. And thanks to Jesus Christ, for this opportunity to write Contents at a glance Introduction Getting Started Part networking fundamentals Chapter 1: The TCP/IP and OSI Networking Models Chapter 2: Fundamentals of ethernet LaNs Chapter 3: Fundamentals of WANs Chapter 4: Fundamentals of IPv4 Addressing and Routing Chapter 5: Fundamentals of TCP/IP Transport and Applications Part I Review Part i: ethernet lans and switches Chapter 6: Building Ethernet LANs with Switches Chapter 7: Installing and Operating Cisco LAN Switches Chapter 8: Configuring Ethernet Switching Chapter 9: Implementing Ethernet Virtual LANS Chapter 10: Troubleshooting Ethernet LANS Part li review Part I: IP Version 4 Addressing and Subnetting Chapter 11: Perspectives on IPv4 Subnetting Chapter 12: Analyzing Classful IPv4 Networks Chapter 13: Analyzing Subnet masks Chapter 14: Analyzing Existing Subnets Part li review Part Iv: Implementing IP Version 4 Chapter 15: Operating Cisco Routers Chapter 16: Configuring IPv4 Addresses and Routes Chapter 17: Learning IPv4 Routes with OSPFv2

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