《CCNA资格认证考试及培训必读 英文本》

1 What Is CCNA?2

1 What Is CCNA?2

CCNA Exam Philosophy4

What Cisco Says about CCNA4

What We Can Infer from What Cisco States5

Summary of the CCNA Exam Philosophy6

Determining Your Strengths and Weaknesses7

Core Chapters Match the Major Topics in the CCNA Objectives7

CCNA Exam Preparation Philosophy7

Questions and Exercises That Are Harder Than the Actual Exam8

Summary of the CCNA Exam Preparation Philosophy9

Simulated Testing on the CD9

Scenarios for Final Preparation9

Analysis of CCNA Training Paths10

Cisco s Recommended Courses11

Analysis of Prerequisite Courses17

The 60 Stated CCNA Objectives19

List and Interpretation of the 60 Stated CCNA Objectives20

Cross Reference to Book Chapters Covering an Objective29

A Game Plan for CCNA Success32

Your Final Preparation for the Exam33

Summary33

2 Understanding Cisco s Internetwork Operating System(IOS)Software34

2 Understanding Cisco s Internetwork Operating System(IOS)Software34

How to Best Use This Chapter35

Do I Know This Already?Quiz36

Routers: The IOS and Its User Interface39

Hardware Review39

Foundation Topics39

Internetwork Operating System(IOS)41

The Command-Line Interface(CLI)41

Commands Made Easier on the CLI43

Cisco Discovery Protocol(CDP)45

Routers: Configuration Processes and the Configuration File46

Example Configuration Process49

Managing Configuration Files51

Routers: Managing IOS Images56

Upgrading an IOS Image into Flash Memory57

Choosing Which IOS Image to Load59

Q A61

Scenarios64

Scenario 2-164

Questions on Scenario 2-165

Scenario 2-266

Questions on Scenario 2-266

Answers to Scenarios69

Scenario 2-1 Answers69

Scenario 2-2 Answers69

3 Understanding the OSI Reference Model70

3 Understanding the OSI Reference Model70

How to Best Use This Chapter71

Do I Know This Already?Quiz72

Foundation Topics75

The OSI，TCP/IP，and Novell NetWare Network Protocol Architectures75

OSI: Origin and Evolution75

OSI Layers76

Layering Benefits and Concepts79

Layer Interactions80

Connection-Oriented Protocols，Connectionless Protocols，and Flow Control87

A Close Examination of OSI Data-Link(Layer-2)Functions94

A Close Examination of OSI Layer 3 Functions102

Q A110

Scenarios112

Scenario3-1112

Scenario Answers115

Answers to Task 1 for Scenario 3-1115

Answers to Task 2 for Scenario 3-1115

Answers to Task 3 for Scenario 3-1117

4 Understanding LANs and LAN Switching120

4 Understanding LANs and LAN Switching120

How to Best Use This Chapter122

Do I Know This Already?Quiz123

Foundation Topics126

LAN Overview126

MAC Addresses128

Ethernet Standards and Operation130

Fast Ethernet133

Ethernet LAN Segmentation134

Transparent Bridging135

LAN Segmentation Advantages (CCNA Objective 46)135

LAN Segmentation Using Routers139

LAN Segmentation Using Switches141

LAN Switching and Virtual LANs145

Virtual LANs149

Spanning-Tree Protocol152

How the Spanning-Tree Protocol Works155

Noticing and Reacting to Changes in Network Topology159

Reacting to Changes in the Spanning Tree160

Q A166

5 Network Protocols: Understanding the TCP/IP Suite and Novell NetWare Protocols168

5 Network Protocols: Understanding the TCP/IP Suite and Novell NetWare Protocols168

How to Best Use This Chapter169

Do I Know This Already?Quiz170

Foundation Topics173

Functions at Each Layer173

Transmission Control Protocol173

User Datagram Protocol177

Address Resolution Protocol179

Internet Control Message Protocol180

IP Addressing and Subnetting184

IP Addressing Basics: Terminology and Concepts184

IP Subnetting191

Dissecting IP Addresses: Deriving Subnet Numbers197

Dissecting IP Addresses: Deriving Broadcast Addresses202

Configuration of IP204

Using Secondary Addresses213

IP Addressing with Frame Relay Subinterfaces215

IPX Addressing and Routing217

Internal Networks and Encapsulation Types219

Configuration of IPX223

Q A232

Scenario 5-1: IP Addressing and Subnet Calculation235

Scenarios235

Scenario 5-2: IP Subnet Design with a Class B Network238

Scenario 5-3: IP Subnet Design with a Class C Network239

Scenario 5-4: IPX Examination240

Scenario 5-5: IPX Configuration247

Scenario Answers249

Answers to Scenario 5-1:IP Addressing and Subnet Calculation249

Answers to Scenario 5-2:IP Subnet Design with a Class B Network250

Answers to Task 1 for Scenario 5-2250

Answers to Task 2 for Scenario 5-2251

Answers to Task 3 for Scenario 5-2252

Answers to Scenario 5-3:IP Subnet Design with a Class C Network253

Answers to Task 1 for Scenario 5-3253

Answers to Task 2 for Scenario 5-3254

Answers to Task 3 for Scenario 5-3255

Answers to Scenario 5-4:IPX Examination256

Answers to Task 1 for Scenario 5-5258

Answers to Scenario 5-5:IPX Configuration258

Answers to Task 2 for Scenario 5-5259

Answers to Task 3 for Scenario 5-5260

6 Understanding Routing262

6 Understanding Routing262

How to Best Use This Chapter263

Do I Know This Already?Quiz264

Foundation Topics267

How Distance Vector Routing Protocols Work267

Distance Vector Routing Protocols270

Configuration of RIP and IGRP280

The network Command281

Split-Horizon and Infinity284

IPX RIP，Plus SAP and GNS291

Integrated Routing Protocols298

Q A303

Scenarios305

Scenario 6-1: IP Configuration 1305

Scenario 6-2: IP Configuration 2306

Scenario 6-3: IP Addressing and Subnet Derivation308

Scenario 6-4: IPX Examination314

Scenario Answers323

Answers to Scenario 6-1: IP Configuration 1323

Answers to Scenario 6-2: IP Configuration 2326

Answers to Scenario 6-3: IP Addressing and Subnet Derivation328

Answers to Scenario 6-4: IPX Examination330

7 Understanding Network Security334

7 Understanding Network Security334

How to Best Use This Chapter335

Do I Know This Already?Quiz336

Foundation Topics339

Filtering IP Traffic339

Standard IP Access Lists341

Extended IP Access Lists344

Named IP Access Lists351

Access List Summary353

Filtering IPX Traffic and SAPs354

Q A366

Scenarios369

Scenario 7-1: IP Filtering Sample 1369

Scenario 7-3: IP Filtering Sample 3370

Scenario 7-2: IP Filtering Sample 2370

Scenario 7-4: IPX Filtering371

Scenario Answers374

Answers to Scenario 7-1: IP Filtering Sample 1374

Answers to Scenario 7-2: IP Filtering Sample 2374

Answers to Scenario 7-3: IP Filtering Sample 3375

Answers to Scenario 7-4: IPX Filtering376

Answers to Task 1 for Scenario 7-4376

Answers to Task 2 for Scenario 7-4377

Answers to Task 3 for Scenario 7-4378

8 WAN Protocols: Understanding Point-to-Point，Frame Relay，and ISDN380

8 WAN Protocols: Understanding Point-to-Point，Frame Relay，and ISDN380

How to Best Use This Chapter381

Do I Know This Already?Quiz382

Foundation Topics385

Point-to-Point Leased Lines385

HDLC and PPP Configuration388

PPP389

Frame Relay Protocols390

How Address Mapping Works402

Frame Relay Configuration408

ISDN Protocols and Design421

Multilink PPP432

ISDN Configuration433

Q A437

Scenarios440

Scenario 8-1: Point-to-Point Verification440

Scenario 8-2: Frame Relay Verification445

Scenario 8-3: Point-to-Point Configuration451

Scenario 8-4: Frame Relay Configuration453

Scenario 8-5: Frame Relay Configuration Dissection455

Answers to Scenario 8-1: Point-to-Point Verification458

Answers to Scenarios458

Answers to Scenario 8-2: Frame Relay Verification459

Answers to Scenario 8-3: Point-to-Point Configuration461

Answers to Scenario 8-4: Frame Relay Configuration464

Answers to Scenario 8-5: Frame Relay Configuration Dissection469

9 Scenarios for Final Preparation472

9 Scenarios for Final Preparation472

How to Best Use This Chapter474

Scenario 9-1474

Scenario 9-1a—Planning475

Scenario 9-1a—Planning Answers477

Scenario 9-1b—Configuration478

Scenario 9-1b—Configuration Answers479

Scenario 9-1c—Verification and Questions480

Scenario 9-1c—Verification and Questions Answers489

Scenario 9-2490

Scenario 9-2a—Planning491

Scenario 9-2a—Planning Answers492

Scenario 9-2b—Configuration494

Scenario 9-2b—Configuration Answers494

Scenario 9-2c—Verification and Questions496

Scenario 9-2c—Verification and Questions Answers505

Scenario 9-3507

Scenario 9-3a—Planning507

Scenario 9-3a—Planning Answers510

Scenario 9-3b—Configuration512

Scenario 9-3b—Configuration Answers512

Scenario 9-3c—Verification and Questions515

Scenario 9-3c—Verification and Questions Answers528

A Decimal to Hexadecimal and Binary Conversion Table530

A Decimal to Hexadecimal and Binary Conversion Table530

B Answers to theDo I Know This Already? Quizzes and Q A Sections540

B Answers to the Do I Know This Already? Quizzes and Q A Sections540

Answers to the Chapter 2 Do I Know This Already? Quiz541

Answers to the Chapter 2 Q A Section543

Answers to the Chapter 3 Do I Know This Already? Quiz549

Answers to the Chapter 3 Q A Section550

Answers to the Chapter 4 Do I Know This Already? Quiz555

Answers to the Chapter 4 Q A Section557

Answers to the Chapter 5 Do I Know This Already? Quiz562

Answers to the Chapter 5 Q A Section564

Answers to the Chapter 6 Do I Know This Already? Quiz573

Answers to the Chapter 6 Q A Section574

Answers to the Chapter 7 Do I Know This Already? Quiz579

Answers to the Chapter 7 Q A Section581

Answers to the Chapter 8 Do I Know This Already? Quiz587

Answers to the Chapter 8 Q A Section588

Index595

Index595