Accessing the WAN, CCNA Exploration Companion Guide
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Accessing the WAN, CCNA Exploration Companion Guide

Accessing the WAN, CCNA Exploration Companion Guide

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About the Book

Accessing the WAN CCNA Exploration Companion Guide   Bob Vachon Rick Graziani   Accessing 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 Guide, 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 using Packet Tracer v4.1 developed by Cisco. The files for these activities are on the accompanying CD-ROM.   Also available for the Accessing the WAN Course Accessing the WAN, CCNA Exploration Labs and Study Guide ISBN-10: 1-58713-201-X ISBN-13: 978-1-58713-201-8   Companion CD-ROM **See instructions within the ebook on how to get access to the files from the CD-ROM that accompanies this print book.** The 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 Networking   This 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.

Table of Contents:
&atext-align=left align=left>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 I    nternet 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 168     Configuring Frame Relay Subinterfaces 168     Verifying Frame Relay Operation 171     Troubleshooting Frame Relay Configuration 178 Summary 180 Labs 181 Check Your Understanding 182 Challenge Questions and Activities 188 To Learn More 188   Chapter 4 Network Security 189 Objectives 189 Key Terms 189 Introduction to Network Security 190     Why Is Network Security Important? 190     Common Security Threats 199     Types of Network Attacks 206     General Mitigation Techniques 219     The Network Security Wheel 226     The Enterprise Security Policy 229 Securing Cisco Routers 232     Router Security Issues 232     Applying Cisco IOS Security Features to Routers 235 Securing Router Network Services 250     Vulnerable Router Services and Interfaces 250     Securing Routing Protocols 256     Locking Down Your Router with Cisco AutoSecure 263 Using Cisco SDM 264     Cisco SDM Overview 264     Configuring Your Router to Support SDM 265     Starting SDM 267     The SDM Interface 269     Cisco SDM Wizards 272     Locking Down a Router with SDM 272 Secure Router Management 275     Maintaining Cisco IOS Software Images 275     Managing Cisco IOS Images 276     Managing Cisco IOS Images 283     Backing Up and Upgrading a Software Image 284     Recovering Software Images 288     Troubleshooting Cisco IOS Configurations 294     Recovering a Lost Password 297 Summary 301 Labs 301 Check Your Understanding 302 Challenge Questions and Activities 308   Chapter 5 ACLs 309 Objectives 309 Key Terms 309 Using ACLs to Secure Networks 310     A TCP Conversation 310     Packet Filtering 313     What Is an ACL? 316     ACL Operation 318     Types of Cisco ACLs 322     How a Standard ACL Works 323     Numbering and Naming ACLs 323     Where to Place ACLs 324     General Guidelines for Creating ACLs 327 Configuring Standard ACLs 327     Entering Criteria Statements 327     Configuring a Standard ACL 328     ACL Wildcard Masking 332     Applying Standard ACLs to Interfaces 339     Editing Numbered ACLs 343     Creating Standard Named ACLs 345     Monitoring and Verifying ACLs 346     Editing Named ACLs 347 Configuring an Extended ACL 348     Extended ACLs 349     Configuring Extended ACLs 351     Applying Extended ACLs to the Interfaces 353     Creating Named Extended ACLs 355 Configure Complex ACLs 357     What Are Complex ACLs? 357     Dynamic ACLs 358     Reflexive ACLs 360     Time-Based ACLs 363     Troubleshooting Common ACL Errors 364 Summary 368 Labs 368 Check Your Understanding 369 Challenge Questions and Activities 375   Chapter 6 Teleworker Services 377 Objectives 377 Key Terms 377 Business Requirements for Teleworker Services 379     The Business Requirements for Teleworker Services 379     The Teleworker Solution 380 Broadband Services 384     Connecting Teleworkers to the WAN 384     Cable 385     DSL 391     Broadband Wireless 396 VPN Technology 401     VPNs and Their Benefits 402     Types of VPNs 405     VPN Components 407     Characteristics of Secure VPNs 408     VPN Tunneling 409     VPN Data Confidentiality and Integrity 410     IPsec Security Protocols 416 Summary 419 Labs 419 Check Your Understanding 419 Challenge Questions and Activities 423   Chapter 7 IP Addressing Services 429 Objectives 429 Key Terms 429 Introduction 431 DHCP 431     Introduction to DHCP 432     DHCP Operation 432     BOOTP and DHCP 435     Configuring a Cisco Router as a DHCP Server 440     Configuring a DHCP Client 447     DHCP Relay 449     Configuring a DHCP Server Using SDM 453     Troubleshooting DHCP Configuration 456 Scaling Networks with NAT 460     What Is NAT? 462     Benefits and Drawbacks of Using NAT 468     Configuring Static NAT 470     Configuring Dynamic NAT 471     Configuring NAT Overload for a Single Public IP Address 473     Configuring NAT Overload for a Pool of Public IP Addresses 475     Configuring Port Forwarding 477     Verifying NAT and NAT Overload 479     Troubleshooting NAT and NAT Overload Configuration 483 IPv6 485     Reasons for Using IPv6 489     IPv6 Addressing 493     IPv6 Transition Strategies 499     Cisco IOS Dual Stack 500     IPv6 Tunneling 502     Routing Configurations with IPv6 503     Configuring IPv6 Addresses 506     Configuring RIPng with IPv6 508 Summary 512 Labs 512 Check Your Understanding 514 Challenge Questions and Activities 522   Chapter 8 Network Troubleshooting 525 Objectives 525 Key Terms 525 Establishing the Network Performance Baseline 526     Documenting Your Network 526     Network Documentation Process 533     Why Is Establishing a Network Baseline Important? 535     Steps for Establishing a Network Baseline 535 Troubleshooting Methodologies and Tools 541     A General Approach to Troubleshooting 541     Using Layered Models for Troubleshooting 541     General Troubleshooting Procedures 544     Troubleshooting Methods 545     Gathering Symptoms 548     Troubleshooting Tools 551 Review of WAN Communications 560     WAN Communications 560     Steps in WAN Design 561     WAN Traffic Considerations 562     WAN Topology Considerations 564     WAN Connection Technologies 567     WAN Bandwidth Considerations 568     Common WAN Implementations Issues 569     WAN Troubleshooting from an ISP’s Perspective 570 Network Troubleshooting 571     Physical Layer Troubleshooting 573     Data Link Layer Troubleshooting 577     Network Layer Troubleshooting 584     Transport Layer Troubleshooting 586     Application Layer Troubleshooting 589 Summary 595 Labs 595 Check Your Understanding 596 Challenge Questions and Activities 600 Appendix 601 Glossary 637


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Product Details
  • ISBN-13: 9780132877572
  • Publisher: Pearson Education (US)
  • Publisher Imprint: Cisco Press
  • Language: English
  • Weight: 1 gr
  • ISBN-10: 0132877570
  • Publisher Date: 28 Apr 2008
  • Binding: Digital download
  • No of Pages: 692


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