1 What Is CCNA? 2
1 What Is CCNA? 2
CCNA Exam Philosophy 4
What Cisco Says about CCNA 4
What We Can Infer from What Cisco States 5
Summary of the CCNA Exam Philosophy 6
Determining Your Strengths and Weaknesses 7
Core Chapters Match the Major Topics in the CCNA Objectives 7
CCNA Exam Preparation Philosophy 7
Questions and Exercises That Are Harder Than the Actual Exam 8
Summary of the CCNA Exam Preparation Philosophy 9
Simulated Testing on the CD 9
Scenarios for Final Preparation 9
Analysis of CCNA Training Paths 10
Cisco s Recommended Courses 11
Analysis of Prerequisite Courses 17
The 60 Stated CCNA Objectives 19
List and Interpretation of the 60 Stated CCNA Objectives 20
Cross Reference to Book Chapters Covering an Objective 29
A Game Plan for CCNA Success 32
Your Final Preparation for the Exam 33
Summary 33
2 Understanding Cisco s Internetwork Operating System(IOS)Software 34
2 Understanding Cisco s Internetwork Operating System(IOS)Software 34
How to Best Use This Chapter 35
Do I Know This Already? Quiz 36
Routers: The IOS and Its User Interface 39
Hardware Review 39
Foundation Topics 39
Internetwork Operating System(IOS) 41
The Command-Line Interface(CLI) 41
Commands Made Easier on the CLI 43
Cisco Discovery Protocol(CDP) 45
Routers: Configuration Processes and the Configuration File 46
Example Configuration Process 49
Managing Configuration Files 51
Routers: Managing IOS Images 56
Upgrading an IOS Image into Flash Memory 57
Choosing Which IOS Image to Load 59
Q A 61
Scenarios 64
Scenario 2-1 64
Questions on Scenario 2-1 65
Scenario 2-2 66
Questions on Scenario 2-2 66
Answers to Scenarios 69
Scenario 2-1 Answers 69
Scenario 2-2 Answers 69
3 Understanding the OSI Reference Model 70
3 Understanding the OSI Reference Model 70
How to Best Use This Chapter 71
Do I Know This Already? Quiz 72
Foundation Topics 75
The OSI，TCP/IP，and Novell NetWare Network Protocol Architectures 75
OSI: Origin and Evolution 75
OSI Layers 76
Layering Benefits and Concepts 79
Layer Interactions 80
Connection-Oriented Protocols，Connectionless Protocols，and Flow Control 87
A Close Examination of OSI Data-Link(Layer-2)Functions 94
A Close Examination of OSI Layer 3 Functions 102
Q A 110
Scenarios 112
Scenario3-1 112
Scenario Answers 115
Answers to Task 1 for Scenario 3-1 115
Answers to Task 2 for Scenario 3-1 115
Answers to Task 3 for Scenario 3-1 117
4 Understanding LANs and LAN Switching 120
4 Understanding LANs and LAN Switching 120
How to Best Use This Chapter 122
Do I Know This Already? Quiz 123
Foundation Topics 126
LAN Overview 126
MAC Addresses 128
Ethernet Standards and Operation 130
Fast Ethernet 133
Ethernet LAN Segmentation 134
Transparent Bridging 135
LAN Segmentation Advantages (CCNA Objective 46) 135
LAN Segmentation Using Routers 139
LAN Segmentation Using Switches 141
LAN Switching and Virtual LANs 145
Virtual LANs 149
Spanning-Tree Protocol 152
How the Spanning-Tree Protocol Works 155
Noticing and Reacting to Changes in Network Topology 159
Reacting to Changes in the Spanning Tree 160
Q A 166
5 Network Protocols: Understanding the TCP/IP Suite and Novell NetWare Protocols 168
5 Network Protocols: Understanding the TCP/IP Suite and Novell NetWare Protocols 168
How to Best Use This Chapter 169
Do I Know This Already? Quiz 170
Foundation Topics 173
Functions at Each Layer 173
Transmission Control Protocol 173
User Datagram Protocol 177
Address Resolution Protocol 179
Internet Control Message Protocol 180
IP Addressing and Subnetting 184
IP Addressing Basics: Terminology and Concepts 184
IP Subnetting 191
Dissecting IP Addresses: Deriving Subnet Numbers 197
Dissecting IP Addresses: Deriving Broadcast Addresses 202
Configuration of IP 204
Using Secondary Addresses 213
IP Addressing with Frame Relay Subinterfaces 215
IPX Addressing and Routing 217
Internal Networks and Encapsulation Types 219
Configuration of IPX 223
Q A 232
Scenario 5-1: IP Addressing and Subnet Calculation 235
Scenarios 235
Scenario 5-2: IP Subnet Design with a Class B Network 238
Scenario 5-3: IP Subnet Design with a Class C Network 239
Scenario 5-4: IPX Examination 240
Scenario 5-5: IPX Configuration 247
Scenario Answers 249
Answers to Scenario 5-1:IP Addressing and Subnet Calculation 249
Answers to Scenario 5-2:IP Subnet Design with a Class B Network 250
Answers to Task 1 for Scenario 5-2 250
Answers to Task 2 for Scenario 5-2 251
Answers to Task 3 for Scenario 5-2 252
Answers to Scenario 5-3:IP Subnet Design with a Class C Network 253
Answers to Task 1 for Scenario 5-3 253
Answers to Task 2 for Scenario 5-3 254
Answers to Task 3 for Scenario 5-3 255
Answers to Scenario 5-4:IPX Examination 256
Answers to Task 1 for Scenario 5-5 258
Answers to Scenario 5-5:IPX Configuration 258
Answers to Task 2 for Scenario 5-5 259
Answers to Task 3 for Scenario 5-5 260
6 Understanding Routing 262
6 Understanding Routing 262
How to Best Use This Chapter 263
Do I Know This Already? Quiz 264
Foundation Topics 267
How Distance Vector Routing Protocols Work 267
Distance Vector Routing Protocols 270
Configuration of RIP and IGRP 280
The network Command 281
Split-Horizon and Infinity 284
IPX RIP，Plus SAP and GNS 291
Integrated Routing Protocols 298
Q A 303
Scenarios 305
Scenario 6-1: IP Configuration 1 305
Scenario 6-2: IP Configuration 2 306
Scenario 6-3: IP Addressing and Subnet Derivation 308
Scenario 6-4: IPX Examination 314
Scenario Answers 323
Answers to Scenario 6-1: IP Configuration 1 323
Answers to Scenario 6-2: IP Configuration 2 326
Answers to Scenario 6-3: IP Addressing and Subnet Derivation 328
Answers to Scenario 6-4: IPX Examination 330
7 Understanding Network Security 334
7 Understanding Network Security 334
How to Best Use This Chapter 335
Do I Know This Already? Quiz 336
Foundation Topics 339
Filtering IP Traffic 339
Standard IP Access Lists 341
Extended IP Access Lists 344
Named IP Access Lists 351
Access List Summary 353
Filtering IPX Traffic and SAPs 354
Q A 366
Scenarios 369
Scenario 7-1: IP Filtering Sample 1 369
Scenario 7-3: IP Filtering Sample 3 370
Scenario 7-2: IP Filtering Sample 2 370
Scenario 7-4: IPX Filtering 371
Scenario Answers 374
Answers to Scenario 7-1: IP Filtering Sample 1 374
Answers to Scenario 7-2: IP Filtering Sample 2 374
Answers to Scenario 7-3: IP Filtering Sample 3 375
Answers to Scenario 7-4: IPX Filtering 376
Answers to Task 1 for Scenario 7-4 376
Answers to Task 2 for Scenario 7-4 377
Answers to Task 3 for Scenario 7-4 378
8 WAN Protocols: Understanding Point-to-Point，Frame Relay，and ISDN 380
8 WAN Protocols: Understanding Point-to-Point，Frame Relay，and ISDN 380
How to Best Use This Chapter 381
Do I Know This Already? Quiz 382
Foundation Topics 385
Point-to-Point Leased Lines 385
HDLC and PPP Configuration 388
PPP 389
Frame Relay Protocols 390
How Address Mapping Works 402
Frame Relay Configuration 408
ISDN Protocols and Design 421
Multilink PPP 432
ISDN Configuration 433
Q A 437
Scenarios 440
Scenario 8-1: Point-to-Point Verification 440
Scenario 8-2: Frame Relay Verification 445
Scenario 8-3: Point-to-Point Configuration 451
Scenario 8-4: Frame Relay Configuration 453
Scenario 8-5: Frame Relay Configuration Dissection 455
Answers to Scenario 8-1: Point-to-Point Verification 458
Answers to Scenarios 458
Answers to Scenario 8-2: Frame Relay Verification 459
Answers to Scenario 8-3: Point-to-Point Configuration 461
Answers to Scenario 8-4: Frame Relay Configuration 464
Answers to Scenario 8-5: Frame Relay Configuration Dissection 469
9 Scenarios for Final Preparation 472
9 Scenarios for Final Preparation 472
How to Best Use This Chapter 474
Scenario 9-1 474
Scenario 9-1a—Planning 475
Scenario 9-1a—Planning Answers 477
Scenario 9-1b—Configuration 478
Scenario 9-1b—Configuration Answers 479
Scenario 9-1c—Verification and Questions 480
Scenario 9-1c—Verification and Questions Answers 489
Scenario 9-2 490
Scenario 9-2a—Planning 491
Scenario 9-2a—Planning Answers 492
Scenario 9-2b—Configuration 494
Scenario 9-2b—Configuration Answers 494
Scenario 9-2c—Verification and Questions 496
Scenario 9-2c—Verification and Questions Answers 505
Scenario 9-3 507
Scenario 9-3a—Planning 507
Scenario 9-3a—Planning Answers 510
Scenario 9-3b—Configuration 512
Scenario 9-3b—Configuration Answers 512
Scenario 9-3c—Verification and Questions 515
Scenario 9-3c—Verification and Questions Answers 528
A Decimal to Hexadecimal and Binary Conversion Table 530
A Decimal to Hexadecimal and Binary Conversion Table 530
B Answers to the Do I Know This Already? Quizzes and Q A Sections 540
B Answers to the Do I Know This Already? Quizzes and Q A Sections 540
Answers to the Chapter 2 Do I Know This Already? Quiz 541
Answers to the Chapter 2 Q A Section 543
Answers to the Chapter 3 Do I Know This Already? Quiz 549
Answers to the Chapter 3 Q A Section 550
Answers to the Chapter 4 Do I Know This Already? Quiz 555
Answers to the Chapter 4 Q A Section 557
Answers to the Chapter 5 Do I Know This Already? Quiz 562
Answers to the Chapter 5 Q A Section 564
Answers to the Chapter 6 Do I Know This Already? Quiz 573
Answers to the Chapter 6 Q A Section 574
Answers to the Chapter 7 Do I Know This Already? Quiz 579
Answers to the Chapter 7 Q A Section 581
Answers to the Chapter 8 Do I Know This Already? Quiz 587
Answers to the Chapter 8 Q A Section 588
Index 595
Index 595