Rent 9781587132056 | Accessing the WAN, CCNA Exploration Companion Guide | Vachon, Bob; Graziani, Rick @knetbooks.com

Rick Graziani teaches computer science and computer networking courses at Cabrillo College in Aptos, California.

Accessing the WANCCNA Exploration Companion GuideBob VachonRick GrazianiAccessing the WAN, CCNA Exploration Companion Guide is the official supplemental textbook for the Accessing the WAN course in the Cisco Networking Academy CCNA Exploration curriculum version 4. This course discusses the WAN technologies and network services required by converged applications in enterprise networks. The Companion Guid... MOREe, written and edited by Networking Academy instructors, is designed as a portable desk reference to use anytime, anywhere. The book's features reinforce the material in the course to help you focus on important concepts and organize your study time for exams.New and improved features help you study and succeed in this course: Chapter objectives: Review core concepts by answering the focus questions listed at the beginning of each chapter. Key terms: Refer to the updated lists of networking vocabulary introduced and turn to the highlighted terms in context in each chapter. Glossary: Consult the all-new comprehensive glossary with more than 250 terms. Check Your Understanding questions and answer key: Evaluate your readiness with the updated end-of-chapter questions that match the style of questions you see on the online course quizzes. The answer key explains each answer. Challenge questions and activities: Strive to ace more challenging review questions and activities designed to prepare you for the complex styles of questions you might see on the CCNA exam. The answer key explains each answer.Bob Vachon is the coordinator of the Computer Systems Technology program and teaches networking infrastructure courses at Cambrian College in Sudbury, Ontario, Canada. Bob has worked and taught in the computer networking and information technology field for 25 years and is a scholar graduate of Cambrian College.Rick Graziani teaches computer science and computer networking courses at Cabrillo College in Aptos, California. Rick has worked and taught in the computer networking and information technology field for 30 years.How To: Look for this icon to study the steps that you need to learn to perform certain tasks.Packet Tracer Activities: Explore networking concepts in activities interspersed throughout some chapters usingPacket Tracer v4.1 developed by Cisco. The files for these activities are on the accompanying CD-ROM.Also available for the Accessing the WAN CourseAccessing the WAN,CCNA ExplorationLabs and Study GuideISBN-10: 1-58713-201-XISBN-13: 978-1-58713-201-8Companion CD-ROMThe CD-ROM provides many useful tools and information to support your education:Packet Tracer Activity exercise files A Guide to Using a Networker's Journal booklet Taking Notes: A .txt file of the chapter objectives More IT Career Information Tips on Lifelong Learning in NetworkingThis book is part of the Cisco Networking Academy Series from Cisco Press. The products in this series support and complement the Cisco Networking Academy online curriculum.

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Introduction to WANs	p. 1
Objectives	p. 1
Key Terms	p. 1
Introducing Wide-Area Networks (WANs)	p. 3
What Is a WAN?	p. 3
Why Are WANs Necessary?	p. 5
The Evolving Enterprise	p. 5
Businesses and Their Networks	p. 5
Small Office (Single LAN)	p. 6
Campus (Multiple LANs)	p. 6
Branch (WAN)	p. 8
Distributed (Global)	p. 9
The Evolving Network Model	p. 11
The Hierarchical Design Model	p. 11
The Enterprise Architecture	p. 13
WAN Technology Concepts	p. 17
WAN Technology Overview	p. 17
WAN Physical Layer Concepts	p. 18
WAN Data Link Layer Concepts	p. 23
WAN Switching Concepts	p. 26
WAN Connection Options	p. 29
WAN Link Connection Options	p. 29
Dedicated Connection Link Options	p. 31
Circuit-Switched Connection Options	p. 32
Packet-Switched Connection Options	p. 35
I nternet Connection Options	p. 38
Choosing a WAN Link Connection	p. 44
Summary	p. 48
Labs	p. 49
Check Your Understanding	p. 50
Challenge Questions and Activities	p. 54
PPP	p. 55
Objectives	p. 55
Key Terms	p. 55
Introducing Serial Communications	p. 56
How Does Serial Communication Work?	p. 56
Serial Communication Standards	p. 59
TDM	p. 61
Demarcation Point	p. 66
Data Terminal Equipment and Data Communications Equipment	p. 67
HDLC Encapsulation	p. 72
Configuring HDLC Encapsulation	p. 75
Troubleshooting Serial Interfaces	p. 76
PPP Concepts	p. 83
Introducing PPP	p. 83
PPP Layered Architecture	p. 84
PPP Frame Structure	p. 87
Establishing a PPP Session	p. 88
Establishing a Link with LCP	p. 89
NCP Explained	p. 95
PPP Configuration Options	p. 97
PPP Configuration Commands	p. 98
Verifying a Serial PPP Encapsulation Configuration	p. 101
Troubleshooting PPP Encapsulation	p. 102
PPP Authentication Protocols	p. 108
Password Authentication Protocol	p. 109
Challenge Handshake Authentication Protocol (CHAP)	p. 110
PPP Encapsulation and Authentication Process	p. 112
Configuring PPP with Authentication	p. 115
Troubleshooting a PPP Configuration with Authentication	p. 118
Summary	p. 120
Labs	p. 120
Check Your Understanding	p. 122
Challenge Questions and Activities	p. 126
Frame Relay	p. 127
Objectives	p. 127
Key Terms	p. 127
Introduction	p. 128
Basic Frame Relay Concepts	p. 128
Introducing Frame Relay	p. 128
Virtual Circuits	p. 134
Frame Relay Encapsulation	p. 140
Frame Relay Topologies	p. 141
Frame Relay Address Mapping	p. 145
Configuring Frame Relay	p. 152
Enabling Frame Relay Encapsulation	p. 153
Configuring Static Frame Relay Maps	p. 156
Advanced Frame Relay Concepts	p. 159
Solving Reachability Issues	p. 159
Frame Relay Subinterfaces	p. 161
Paying for Frame Relay	p. 162
Frame Relay Flow Control	p. 166
Configuring Advanced Frame Relay	p. 168
Configuring Frame Relay Subinterfaces	p. 168
Verifying Frame Relay Operation	p. 171
Troubleshooting Frame Relay Configuration	p. 178
Summary	p. 180
Labs 181
Check Your Understanding	p. 182
Challenge Questions and Activities	p. 188
To Learn More	p. 188
Network Security	p. 189
Objectives	p. 189
Key Terms	p. 189
Introduction to Network Security	p. 190
Why Is Network Security Important?	p. 190
Common Security Threats	p. 199
Types of Network Attacks	p. 206
General Mitigation Techniques	p. 219
The Network Security Wheel	p. 226
The Enterprise Security Policy	p. 229
Securing Cisco Routers	p. 232
Router Security Issues	p. 232
Applying Cisco IOS Security Features to Routers	p. 235
Securing Router Network Services	p. 250
Vulnerable Router Services and Interfaces	p. 250
Securing Routing Protocols	p. 256
Lockin
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