Take your first step to CCNA certification From bestselling author Todd Lammle comes the most up-to-date book on CCNA exam 640-821, the first exam in Cisco's popular two-exam Cisco Certified Network Associate (CCNA) certification track. Understand networking for the small or home office market, prepare for the exam, and acquire the skills you need with this comprehensive guide. Inside you'll find: Complete coverage of all exam objectives in a systematic approach, so you can be confident you're getting the instruction you need Practical hands-on exercises to reinforce critical skills Real-world scenarios that show you life beyond the classroom and put what you've learned in the context of actual job roles Challenging review questions in each chapter to prepare you for exam day Exam Essentials, a key feature at the end of each chapter that identifies critical areas you must become proficient in before taking exam 640-821 A handy tear card that maps every official exam objective to the corresponding chapter in the book, so you can track your exam prep objective by objective Look inside for complete coverage of all exam objectives. Featured on the CD SYBEX TEST ENGINE: Test your knowledge with advanced testing software. Includes all chapter review questions and bonus exams. ELECTRONIC FLASHCARDS: Reinforce your understanding with flashcards that can run on your PC, Pocket PC, or Palm handheld. Also on CD, you'll find preview editions of the CCNA Video Series and the CCNA Audio Series from author Todd Lammle, as well as the entire book in searchable and printable PDF. Study anywhere, any time, and approach the exam with confidence.
Author(s): Todd Lammle
Publisher: Sybex
Year: 2006
Language: English
Pages: 509
Cover......Page 1
Acknowledgments......Page 7
Contents at a Glance......Page 8
Contents......Page 10
Cisco’s Network Support Certifications......Page 18
Assessment Test......Page 26
Answers to Assessment Test......Page 30
Internetworking......Page 32
Internetworking Basics......Page 34
Internetworking Models......Page 41
Advantages of Reference Models......Page 42
The OSI Reference Model......Page 43
The Application Layer......Page 45
The Transport Layer......Page 46
The Network Layer......Page 52
The Data Link Layer......Page 54
The Physical Layer......Page 60
Ethernet Networking......Page 61
Half- and Full-Duplex Ethernet......Page 63
Ethernet at the Data Link Layer......Page 64
Ethernet at the Physical Layer......Page 67
Straight-Through Cable......Page 69
Rolled Cable......Page 70
Data Encapsulation......Page 73
The Cisco Three-Layer Hierarchical Model......Page 77
The Core Layer......Page 78
The Access Layer......Page 79
Exam Essentials......Page 80
Written Lab 1.1: OSI Questions......Page 81
Written Lab 1.3: Identifying Collision and Broadcast Domains......Page 83
Review Questions......Page 85
Answers to Review Questions......Page 89
Answers to Written Lab 1......Page 91
Answers to Written Lab 1.3......Page 92
Internet Protocols......Page 94
TCP/IP and the DoD Model......Page 95
The Process/Application Layer Protocols......Page 97
The Host-to-Host Layer Protocols......Page 101
The Internet Layer Protocols......Page 110
The Hierarchical IP Addressing Scheme......Page 120
Private IP Addresses......Page 126
Summary......Page 127
Written Lab 2......Page 128
Review Questions......Page 129
Answers to Review Questions......Page 133
Answers to Written Lab 2......Page 135
IP Subnetting and Variable Length Subnet Masks (VLSMs) and Troubleshooting IP......Page 136
Subnetting Basics......Page 137
How to Create Subnets......Page 138
Subnet Masks......Page 140
Classless Inter-Domain Routing (CIDR)......Page 141
Subnetting a Class C Address: The Fast Way!......Page 143
Subnetting Class B Addresses......Page 151
Subnetting Class A Addresses......Page 158
Variable Length Subnet Masks (VLSMs)......Page 161
VLSM Design......Page 162
Troubleshooting IP Addressing......Page 164
Determining IP Address Problems......Page 166
Exam Essentials......Page 171
Written Lab 3......Page 172
Review Questions......Page 173
Answers to Review Questions......Page 178
Answers to Written Lab 3......Page 180
Introduction to the Cisco IOS......Page 182
Connecting to a Cisco Router......Page 184
Bringing Up a Router......Page 186
Command-Line Interface (CLI)......Page 188
Overview of Router Modes......Page 189
CLI Prompts......Page 190
Editing and Help Features......Page 193
Gathering Basic Routing Information......Page 198
Hostnames......Page 199
Banners......Page 200
Setting Passwords......Page 201
Encrypting Your Passwords......Page 206
Descriptions......Page 208
Router Interfaces......Page 209
Bringing Up an Interface......Page 210
Viewing, Saving, and Erasing Configurations......Page 215
Verifying Your Configuration......Page 217
Exam Essentials......Page 226
Written Lab 4......Page 228
Hands-on Lab 4.1: Logging into a Router......Page 229
Hands-on Lab 4.2: Using the Help and Editing Features......Page 230
Hands-on Lab 4.4: Setting Your Passwords......Page 231
Hands-on Lab 4.5: Setting the Hostname, Descriptions, IP Address, and Clock Rate......Page 233
Review Questions......Page 236
Answers to Review Questions......Page 241
Answers to Written Lab 4......Page 243
IP Routing......Page 244
Routing Basics......Page 245
The IP Routing Process......Page 247
Testing Your IP Routing Understanding......Page 253
Configuring IP Routing......Page 257
Static Routing......Page 264
Default Routing......Page 269
Written Lab 5......Page 271
Hands-on Labs......Page 273
Hands-on Lab 5.1: Creating Static Routes......Page 274
Review Questions......Page 276
Answers to Review Questions......Page 281
Answers to Written Lab 5......Page 282
Dynamic Routing Protocols......Page 284
Administrative Distances......Page 285
Routing Protocols......Page 286
Distance-Vector Routing Protocols......Page 287
Routing Information Protocol (RIP)......Page 288
RIP Timers......Page 289
Configuring RIP Routing......Page 290
Verifying the RIP Routing Tables......Page 292
Configuring RIP Routing Example 2......Page 294
RIP Version 2 (RIPv2)......Page 295
Interior Gateway Routing Protocol (IGRP)......Page 297
Configuring IGRP Routing......Page 298
Verifying the IGRP Routing Tables......Page 300
Troubleshooting IGRP......Page 301
Using Both RIP and IGRP......Page 302
The show protocols Command......Page 303
The show ip protocols Command......Page 304
The debug ip rip Command......Page 305
The debug ip igrp events Command......Page 307
Exam Essentials......Page 308
Written Lab 6......Page 309
Hands-on Labs......Page 310
Hands-on Lab 6.1: Dynamic Routing with RIP......Page 311
Hands-on Lab 6.2: Dynamic Routing with IGRP......Page 312
Review Questions......Page 313
Answers to Review Questions......Page 317
Answers to Written Lab 6......Page 319
Layer 2 Switching......Page 320
Before Layer 2 Switching......Page 321
Switching Services......Page 324
Limitations of Layer 2 Switching......Page 325
Three Switch Functions at Layer 2......Page 326
Spanning Tree Protocol (STP)......Page 331
Spanning Tree Terms......Page 332
Spanning-Tree Port States......Page 333
LAN Switch Types......Page 334
Summary......Page 335
Written Lab 7......Page 336
Review Questions......Page 337
Answers to Review Questions......Page 342
Answers to Written Lab 7......Page 344
Managing a Cisco Internetwork......Page 346
The Internal Components of a Cisco Router......Page 347
The Router Boot Sequence......Page 348
Understanding the Configuration Register Bits......Page 349
Changing the Configuration Register......Page 351
Recovering Passwords......Page 353
Backing Up and Restoring the Cisco IOS......Page 356
Verifying Flash Memory......Page 357
Backing Up the Cisco IOS......Page 358
Restoring or Upgrading the Cisco Router IOS......Page 359
Backing Up the Cisco Router Configuration......Page 362
Restoring the Cisco Router Configuration......Page 364
Using Cisco Discovery Protocol (CDP)......Page 365
Getting CDP Timers and Holdtime Information......Page 366
Gathering Neighbor Information......Page 367
Gathering Port and Interface Information......Page 370
Documenting a Network Topology using CDP......Page 372
Using Telnet......Page 375
Telnetting into Multiple Devices Simultaneously......Page 377
Closing Telnet Sessions......Page 379
Building a Host Table......Page 381
Using DNS to Resolve Names......Page 383
Checking Network Connectivity and Troubleshooting......Page 385
Using the ping Command......Page 386
Using the traceroute Command......Page 387
Debugging......Page 388
Using the show processes Command......Page 390
Exam Essentials......Page 391
Written Lab 8......Page 392
Hands-on Lab 8.2: Upgrading or Restoring Your Router IOS......Page 394
Hands-on Lab 8.4: Using the Cisco Discovery Protocol CDP)......Page 395
Hands-on Lab 8.5: Using Telnet......Page 396
Hands-on Lab 8.6: Resolving Hostnames......Page 397
Review Questions......Page 399
Answers to Review Questions......Page 404
Answers to Written Lab 8......Page 406
Wide Area Networking Protocols......Page 408
Introduction to Wide Area Networks......Page 409
WAN Connection Types......Page 410
WAN Support......Page 411
Cabling the Wide Area Network......Page 413
Serial Transmission......Page 414
Data Terminal Equipment and Data Communication Equipment......Page 415
High-Level Data Link Control (HDLC) Protocol......Page 416
Point-to-Point Protocol (PPP)......Page 417
PPP Authentication Methods......Page 418
Configuring PPP Authentication......Page 419
Verifying PPP Encapsulation......Page 420
Written Lab 9......Page 421
Hands-on Lab 9.1: Configuring PPP Encapsulation and Authentication......Page 423
Hands-on Lab 9.2: Configuring and Monitoring HDLC......Page 424
Review Questions......Page 425
Answers to Review Questions......Page 429
Answers to Written Lab 9......Page 431
Glossary......Page 432
Index......Page 492
