CompTIA Network+认证考试指南英文原版完整版 CompTIA Network+ N10-006 Cert Guide.pdf

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Table of Contents

Introduction

Chapter 1 Computer Network Fundamentals

Foundation Topics

Defining a Network

The Purpose of Networks

Overview of Network Components

Networks Defined by Geography

LAN

WAN

Other Categories of Networks

CAN

MAN

PAN

Networks Defined by Topology

Physical Versus Logical Topology

Bus Topology

Ring Topology

Star Topology

Hub-and-Spoke Topology

Full-Mesh Topology

Partial-Mesh Topology

Networks Defined by Resource Location

Client/Server Networks

Peer-to-Peer Networks

Real-World Case Study

Summary

Exam Preparation Tasks

Review Questions

Chapter 2 The OSI Reference Model

Foundation Topics

The Purpose of Reference Models

The OSI Model

Layer 1: The Physical Layer

Layer 2: The Data Link Layer

Media Access Control

Logical Link Control

Layer 3: The Network Layer

Layer 4: The Transport Layer

Layer 5: The Session Layer

Layer 6: The Presentation Layer

Layer 7: The Application Layer

The TCP/IP Stack

Layers of the TCP/IP Stack

Common Application Protocols in the TCP/IP Stack

Real-World Case Study

Summary

Exam Preparation Tasks

Review Questions

Chapter 3 Network Components

Foundation Topics

Media

Coaxial Cable

Twisted-Pair Cable

Shielded Twisted Pair

Unshielded Twisted Pair

Plenum Versus Nonplenum Cable

Fiber-Optic Cable

Multimode Fiber

Single-Mode Fiber

Fiber Connector Polishing Styles

Media Converters

Cable Distribution

Wireless Technologies

Network Infrastructure Devices

Hubs

Bridges

Switches

Multilayer Switches

Routers

Infrastructure Device Summary

Specialized Network Devices

VPN Concentrators

Firewalls

DNS Servers

DHCP Servers

Proxy Servers

Content Engines

Content Switches

Virtual Network Devices

Virtual Servers

Virtual Routers and Firewalls

Virtual Switches

Virtual Desktops

More Detailed Documents

Incident Response

Vulnerability Scanners

Nessus

Nmap

Honey Pots and Honey Nets

Access Control Lists

Remote-Access Security

Firewalls

Firewall Types

Firewall Inspection Types

Packet-Filtering Firewall

Stateful Firewall

Firewall Zones

Unified Threat Management Firewalls

Virtual Private Networks

Overview of IPsec with IKEv1

IKE Modes and Phases

Authentication Header and Encapsulating Security Payload

The Five Steps in Setting Up and Tearing Down an IPsec Site-to-Site VPN Using IKEv1

Other VPN Technologies

Intrusion Detection and Prevention

IDS Versus IPS

IDS and IPS Device Categories

Detection Methods

Signature-Based Detection

Policy-Based Detection

Anomaly-Based Detection

Deploying Network-Based and Host-Based Solutions

Real-World Case Study

Summary

Exam Preparation Tasks

Review Questions

Chapter 13 Network Troubleshooting

Foundation Topics

Troubleshooting Basics

Troubleshooting Fundamentals

Structured Troubleshooting Methodology

Physical Layer Troubleshooting

Physical Layer Troubleshooting: Scenario

Physical Layer Troubleshooting: Solution

Data Link Layer Troubleshooting

Data Link Layer Troubleshooting: Scenario

Data Link Layer Troubleshooting: Solution

Network Layer Troubleshooting

Layer 3 Data Structures

Common Layer 3 Troubleshooting Issues

Network Layer Troubleshooting: Scenario

Network Layer Troubleshooting: Solution

Wireless Troubleshooting

Wireless Network Troubleshooting: Scenario

Wireless Network Troubleshooting: Solution

Specialized Networks

Real-World Case Study

Summary

Exam Preparation Tasks

Review Questions

Chapter 14 Final Preparation

Tools for Final Preparation

Pearson Cert Practice Test Engine and Questions on the DVD

Install the Software from the DVD

Activate and Download the Practice Exam

Activating Other Exams

Premium Edition

Video Training on DVD

Memory Tables

Simulations and Performance-Based Exercises

End-of-Chapter Review Tools

Suggested Plan for Final Review and Study

Strategies for Taking the Exam

Summary

APPENDIX A: Answers to Review Questions

APPENDIX B: Network+ N10-006 Exam Updates

APPENDIX C: Exam Essentials

Glossary

Index

ON THE DVD

APPENDIX D: Memory Tables

APPENDIX E: Memory Table Answer Key

APPENDIX F: Study Planner

ptg14526150From the Library of Outcast Outcast

CompTIA® Network+ N10-006 Cert Guide Book Authors: Keith Barker, CCIE No. 6783 Kevin Wallace, CCIE No. 7945 Network+ Hands-on Lab Simulator Software author: Michael D. Taylor 800 East 96th Street Indianapolis, Indiana 46240 USA

CompTIA Network+ N10-006 Cert Guide Copyright © 2015 by Pearson Certifi cation 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 information contained herein. Although every precaution has been taken in the preparation of this book, the publisher and author assume no respon- sibility for errors or omissions. Nor is any liability assumed for damages resulting from the use of the information contained herein. ISBN-13: 9780789754080 ISBN-10: 0789754088 Library of Congress Control Number: 2015930209 Printed in the United States on America First Printing: February 2015 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. Windows is a registered trademark of Microsoft Corporation. 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 damages arising from the information contained in this book or from the use of the DVD 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. Associate Publisher Dave Dusthimer Executive Editor Brett Bartow Senior Development Editor Christopher Cleveland Managing Editor Sandra Schroeder Project Editor Seth Kerney Copy Editor Keith Cline Indexer Tim Wright Proofreader Gill Editorial Services Technical Editors Michelle Plumb Anthony Sequeria Publishing Coordinator Vanessa Evans Multimedia Developer Lisa Matthews Book Designer Mark Shirar Composition Trina Wurst ptg14526150From the Library of Outcast Outcast

Contents at a Glance Introduction xxv CHAPTER 1 Computer Network Fundamentals 2 CHAPTER 2 The OSI Reference Model 28 CHAPTER 3 Network Components 60 CHAPTER 4 Ethernet Technology 112 CHAPTER 5 IPv4 and IPv6 Addresses 148 CHAPTER 6 Routing IP Packets 198 CHAPTER 7 Wide-Area Networks 230 CHAPTER 8 Wireless LANs 266 CHAPTER 9 Network Optimization 296 CHAPTER 10 Command-Line Tools 326 CHAPTER 11 Network Management 366 CHAPTER 12 Network Security 396 CHAPTER 13 Network Troubleshooting 450 CHAPTER 14 Final Preparation 476 APPENDIX A Answers to Review Questions 486 APPENDIX B Network+ N10-006 Exam Updates 490 APPENDIX C Exam Essentials 494 Glossary 506 Index 533 ON THE DVD: APPENDIX D Memory Tables APPENDIX E Memory Table Answer Key APPENDIX F Study Planner ptg14526150From the Library of Outcast Outcast

iv CompTIA Network+ N10-006 Cert Guide Table of Contents Introduction xxv Chapter 1 Computer Network Fundamentals 2 Foundation Topics 4 Defining a Network 4 The Purpose of Networks 4 Overview of Network Components 5 Networks Defined by Geography 7 LAN 7 WAN 8 Other Categories of Networks 8 CAN 8 MAN 8 PAN 9 Networks Defined by Topology 9 Physical Versus Logical Topology 9 Bus Topology 11 Ring Topology 13 Star Topology 14 Hub-and-Spoke Topology 15 Full-Mesh Topology 17 Partial-Mesh Topology 18 Networks Defined by Resource Location 19 Client/Server Networks 19 Peer-to-Peer Networks 21 Real-World Case Study 22 Summary 23 Exam Preparation Tasks 23 Review Questions 25 The OSI Reference Model 28 Foundation Topics 30 The Purpose of Reference Models 30 The OSI Model 31 Layer 1: The Physical Layer 33 Layer 2: The Data Link Layer 37 Chapter 2 ptg14526150From the Library of Outcast Outcast

Contents v Media Access Control 37 Logical Link Control 38 Layer 3: The Network Layer 40 Layer 4: The Transport Layer 42 Layer 5: The Session Layer 44 Layer 6: The Presentation Layer 46 Layer 7: The Application Layer 47 The TCP/IP Stack 48 Layers of the TCP/IP Stack 48 Common Application Protocols in the TCP/IP Stack 51 Real-World Case Study 55 Summary 56 Exam Preparation Tasks 56 Review Questions 58 Chapter 3 Network Components 60 Foundation Topics 62 Media 62 Coaxial Cable 62 Twisted-Pair Cable 64 Shielded Twisted Pair 64 Unshielded Twisted Pair 65 Plenum Versus Nonplenum Cable 68 Fiber-Optic Cable 69 Multimode Fiber 69 Single-Mode Fiber 71 Fiber Connector Polishing Styles 73 Media Converters 74 Cable Distribution 74 Wireless Technologies 76 Network Infrastructure Devices 77 Hubs 77 Bridges 79 Switches 80 Multilayer Switches 87 Routers 88 Infrastructure Device Summary 89 ptg14526150From the Library of Outcast Outcast

vi CompTIA Network+ N10-006 Cert Guide Specialized Network Devices 90 VPN Concentrators 90 Firewalls 91 DNS Servers 92 DHCP Servers 94 Proxy Servers 96 Content Engines 97 Content Switches 98 Virtual Network Devices 99 Virtual Servers 99 Virtual Routers and Firewalls 100 Virtual Switches 101 Virtual Desktops 102 Other Virtualization Solutions 102 Cloud Computing 103 Software-Defined Networking 104 Voice over IP Protocols and Components 104 Real-World Case Study 105 Summary 106 Exam Preparation Tasks 107 Review Questions 109 Ethernet Technology 112 Foundation Topics 114 Principles of Ethernet 114 Ethernet Origins 114 Carrier Sense Multiple Access Collision Detect 116 Distance and Speed Limitations 120 Ethernet Switch Features 122 Virtual LANs 122 Switch Configuration for an Access Port 124 Trunks 125 Switch Configuration for a Trunk Port 127 Spanning Tree Protocol 127 Corruption of a Switch’s MAC Address Table 128 Broadcast Storms 129 STP Operation 130 Chapter 4 ptg14526150From the Library of Outcast Outcast

Contents vii Link Aggregation 133 LACP Configuration 134 Power over Ethernet 135 Port Monitoring 136 Port Mirroring Configuration 138 User Authentication 138 Management Access and Authentication 140 First-Hop Redundancy 141 Other Switch Features 142 Real-World Case Study 143 Summary 144 Exam Preparation Tasks 144 Review Questions 146 IPv4 and IPv6 Addresses 148 Foundation Topics 150 Binary Numbering 150 Chapter 5 Principles of Binary Numbering 150 Converting a Binary Number to a Decimal Number 151 Converting a Decimal Number to a Binary Number 151 Binary Numbering Practice 153 Binary Conversion Exercise 1 153 Binary Conversion Exercise 1: Solution 154 Binary Conversion Exercise 2 154 Binary Conversion Exercise 2: Solution 154 Binary Conversion Exercise 3 154 Binary Conversion Exercise 3: Solution 155 Binary Conversion Exercise 4 155 Binary Conversion Exercise 4: Solution 156 IPv4 Addressing 157 IPv4 Address Structure 157 Classes of Addresses 159 Types of Addresses 161 Unicast 161 Broadcast 161 Multicast 162 ptg14526150From the Library of Outcast Outcast

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CompTIA Network+认证考试指南英文原版完整版 CompTIA Network+ N10-006 Cert Guide.pdf

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