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Accessing the WAN, CCNA exploration companion guide

Langue : Anglais

Auteurs :

Couverture de l’ouvrage Accessing the WAN, CCNA exploration companion guide
Accessing the WAN, CCNA Exploration Companion Guide is the official supplemental textbook for this CCNA Exploration course from the Cisco Networking Academy. Completely revised to match the new curriculum with new examples and explanations, this textbook includes original material developed by the authors, yet it fully aligns with the CCNA Exploration curriculum. Written by experienced instructors who present material using their own voices and some of their own examples, this new edition augments student understanding of course material. The new edition incorporates recently improved features to aid instructors and enhance student comprehension. Chapters align with course modules in both name and number, and chapter objectives are stated as questions to encourage students to think about and find answers as they read chapters. End-of-chapter Check Your Understanding questions and Summaries align with chapter objectives to emphasize key topics, while key terms are listed in each chapter opener in the order of occurrence to alert students to upcoming vocabulary words. In addition, key features include "How To" quick references for step-by-step tasks, real-world examples and all-new illustrations, concise explanations with a focus on word usage and sentence structure for improved readability, and Packet Tracer activities throughout.

Chapter 1 Introduction to WANs 1

Objectives 1

Key Terms 1

Introducing Wide-Area Networks (WANs) 3

What Is a WAN? 3

Why Are WANs Necessary? 5

The Evolving Enterprise 5

Businesses and Their Networks 5

Small Office (Single LAN) 6

Campus (Multiple LANs) 6

Branch (WAN) 8

Distributed (Global) 9

The Evolving Network Model 11

The Hierarchical Design Model 11

The Enterprise Architecture 13

WAN Technology Concepts 17

WAN Technology Overview 17

WAN Physical Layer Concepts 18

WAN Data Link Layer Concepts 23

WAN Switching Concepts 26

WAN Connection Options 29

WAN Link Connection Options 29

Dedicated Connection Link Options 31

Circuit-Switched Connection Options 32

Packet-Switched Connection Options 35

Internet Connection Options 38

Choosing a WAN Link Connection 44

Summary 48

Labs 49

Check Your Understanding 50

Challenge Questions and Activities 54

Chapter 2 PPP 55

Objectives 55

Key Terms 55

Introducing Serial Communications 56

How Does Serial Communication Work? 56

Serial Communication Standards 59

TDM 61

Demarcation Point 66

Data Terminal Equipment and Data Communications Equipment 67

HDLC Encapsulation 72

Configuring HDLC Encapsulation 75

Troubleshooting Serial Interfaces 76

PPP Concepts 83

Introducing PPP 83

PPP Layered Architecture 84

PPP Frame Structure 87

Establishing a PPP Session 88

Establishing a Link with LCP 89

NCP Explained 95

PPP Configuration Options 97

PPP Configuration Commands 98

Verifying a Serial PPP Encapsulation Configuration 101

Troubleshooting PPP Encapsulation 102

PPP Authentication Protocols 108

Password Authentication Protocol 109

Challenge Handshake Authentication Protocol (CHAP) 110

PPP Encapsulation and Authentication Process 112

Configuring PPP with Authentication 115

Troubleshooting a PPP Configuration with Authentication 118

Summary 120

Labs 120

Check Your Understanding 122

Challenge Questions and Activities 126

Chapter 3 Frame Relay 127

Objectives 127

Key Terms 127

Introduction 128

Basic Frame Relay Concepts 128

Introducing Frame Relay 128

Virtual Circuits 134

Frame Relay Encapsulation 140

Frame Relay Topologies 141

Frame Relay Address Mapping 145

Configuring Frame Relay 152

Enabling Frame Relay Encapsulation 153

Configuring Static Frame Relay Maps 156

Advanced Frame Relay Concepts 159

Solving Reachability Issues 159

Frame Relay Subinterfaces 161

Paying for Frame Relay 162

Frame Relay Flow Control 166

Configuring Advanced Frame Relay...

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