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  1. 1. Cisco CCENT ICND1 100-101 Second Edition Michael Valentine Keith Barker
  2. 2. Cisco CCENT ICND1 100-101 Exam Cram Copyright 2014 by Pearson All rights reserved. No part of this book shall be reproduced, stored in a retrieval system, or transmitted by any means, electronic, mechanical, photocopying, recording, or otherwise, without written permission from the publisher. No patent liability is assumed with respect to the use of the infor- mation contained herein. Although every precaution has been taken in the preparation of this book, the publisher and author assume no responsibility for errors or omissions. Nor is any liability assumed for damages resulting from the use of the information contained herein. ISBN-13: 978-0-7897-5150-8 ISBN-10: 0-7897-5150-x Library of Congress Publication Control Number: 2013955306 First Printing: December 2013 Trademarks All terms mentioned in this book that are known to be trademarks or ser- vice marks have been appropriately capitalized. Pearson 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. Warning and Disclaimer 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 provided is on an as is basis. The author and the publisher shall have neither liability nor responsibility to any person or entity with respect to any loss or dam- ages arising from the information contained in this book or from the use of the CD or programs accompanying it. Special Sales For information about buying this title in bulk quantities, or for special sales opportunities (which may include electronic versions; custom cover designs; and content particular to your business, training goals, marketing focus, or branding interests), please contact our corporate sales department at corpsales@pearsoned.com or (800) 382-3419. For government sales inquiries, please contact governmentsales@pearsoned.com. For questions about sales outside the U.S., please contact international@pearsoned.com. Publisher Paul Boger Associate Publisher David Dusthimer Executive Editor Brett Bartow Senior Development Editor Christopher Cleveland Managing Editor Sandra Schroeder Project Editor Seth Kerney Copy Editor Keith Cline Indexer Ken Johnson Proofreader Jess DeGabriele Technical Editors Brian DAndrea Andrew Whitaker Publishing Coordinator Vanessa Evans Multimedia Developer Lisa Matthews Book Designer Mark Shirar Page Layout Bumpy Design
  3. 3. Contents at a Glance Introduction 1 Self-Assessment 17 CHAPTER 1 Networking Fundamentals 25 CHAPTER 2 Network Models 39 CHAPTER 3 Concepts in IP Addressing 69 CHAPTER 4 Working with Cisco Equipment 133 CHAPTER 5 Securing Your Cisco Devices 169 CHAPTER 6 Basic Switch Operations and Configuration 189 CHAPTER 7 Basic Routing 225 CHAPTER 8 Visualizing Data Flow Between Two Hosts on a Network 271 CHAPTER 9 IP Access Lists 289 CHAPTER 10 IP Services 319 CHAPTER 11 Troubleshooting 347 Practice Test 1 377 Answers to Practice Test 1 413 Practice Test 2 423 Answers to Practice Test 2 459 Glossary 469 Index 487
  4. 4. Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Taking a Certification Exam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Tracking Your Certification Status . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 How to Prepare for an Exam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 What This Book Will Not Do. . . . . . . . . . . . . . . . . . . . . . . . . . 5 What This Book Is Designed to Do . . . . . . . . . . . . . . . . . . . . . . 5 About This Book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 CCENT Official Exam Topics . . . . . . . . . . . . . . . . . . . . . . . . . 6 Chapter Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Pearson IT Certification Practice Test Engine and Questions on the CD-ROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Install the Software from the CD . . . . . . . . . . . . . . . . . . . . . . . 14 Activate and Download the Practice Exam. . . . . . . . . . . . . . . . . 15 Activating Other Exams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Contacting the Authors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Self-Assessment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 CCENT in the Real World . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 The Ideal CCENT Candidate . . . . . . . . . . . . . . . . . . . . . . . . . 18 Put Yourself to the Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 CHAPTER 1: Networking Fundamentals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Essential Terms and Components. . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 WAN Technologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Review Questions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Answers to Review Questions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 What Next?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 CHAPTER 2: Network Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Cisco Hierarchical Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Access Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
  5. 5. v Table of Contents Distribution Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Core Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Advantages of the Three-Layer Model . . . . . . . . . . . . . . . . . . . 42 OSI Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Layer 7: The Application Layer . . . . . . . . . . . . . . . . . . . . . . . . 45 Layer 6: The Presentation Layer . . . . . . . . . . . . . . . . . . . . . . . 47 Layer 5: The Session Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Layer 4: The Transport Layer . . . . . . . . . . . . . . . . . . . . . . . . . 47 Layer 3: The Network Layer . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Layer 2: The Data Link Layer . . . . . . . . . . . . . . . . . . . . . . . . . 56 Layer 1: The Physical Layer . . . . . . . . . . . . . . . . . . . . . . . . . . 57 TCP/IP Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Review Questions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 Answers to Review Questions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 CHAPTER 3: Concepts in IP Addressing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Binary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 Hexadecimal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 Conversion Between Binary, Hex, and Decimal . . . . . . . . . . . . . . . . . 75 Decimal to Hexadecimal Conversions . . . . . . . . . . . . . . . . . . . . 75 Hexadecimal to Decimal Conversions . . . . . . . . . . . . . . . . . . . . 75 IP Address Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 Address Class. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 Public and Private IP Addresses . . . . . . . . . . . . . . . . . . . . . . . . 78 Default Subnet Mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 The Network Field. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 The Host Field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Nondefault Masks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 The Subnet Field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 Subnetting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 Address Class and Default Mask. . . . . . . . . . . . . . . . . . . . . . . . 83 The Increment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 Number of Hosts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 The Broadcast ID. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 Number of Subnets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
  6. 6. vi Cisco CCENT ICND1 100-101 Exam Cram Working with Subnetting Questions. . . . . . . . . . . . . . . . . . . . . 91 The Subnetting Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 VLSM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 Route Summarization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 Summarization Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 Determining Summary Addresses. . . . . . . . . . . . . . . . . . . . . . . 104 IPv6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 IPv6 Address Allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 IPv6 Address Notation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 Types of IPv6 Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 IPv6 Address Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . 115 IPv6 Router Configuration . . . . . .