Networking Essentials, 3rd Edition

Description

• Copyright 2012
• Dimensions: 8" x 10"
• Edition: 3rd

• eBook
• ISBN-10: 0-13-338168-4
• ISBN-13: 978-0-13-338168-9

Thoroughly updated to reflect CompTIA’s Network+ N10-005 exam, Networking Essentials, Third Edition, is a practical, up-to-date, and hands-on guide to the basics of networking. Written from the viewpoint of a working network administrator, it requires absolutely no experience with either network concepts or day-to-day network management.

Networking Essentials, Third Edition, includes expanded coverage of cabling, a new introduction to IPv6, and new chapters on basic switch configuration and troubleshooting. Its wireless and security chapters now focus strictly on introductory material, and you will also find up-to-date introductions to twisted-pair and fiber optic cabling, TCP/IP protocols, Internet and LAN interconnections, and basic network problem identification and resolution. Clear goals are outlined for each chapter, and every concept is introduced in easy to understand language that explains how and why networking technologies are used. Each chapter is packed with real-world examples and practical exercises that reinforce all concepts and guide you through using them to configure, analyze, and fix networks.

Key Pedagogical Features

• NET-CHALLENGE SIMULATION SOFTWARE provides hands-on experience with entering router and switch commands, setting up functions, and configuring interfaces and protocols
• WIRESHARK NETWORK PROTOCOL ANALYZER presents techniques and examples of data traffic analysis throughout
• PROVEN TOOLS FOR MORE EFFECTIVE LEARNING & NETWORK+ PREP, including chapter outlines, summaries, and Network+ objectives
• WORKING EXAMPLES IN EVERY CHAPTER to reinforce key concepts and promote mastery
• KEY TERM DEFINITIONS, LISTINGS & EXTENSIVE GLOSSARY to help you master the language of networking
• QUESTIONS, PROBLEMS, AND CRITICAL THINKING QUESTIONS to help you deepen your understanding

The accompanying CD-ROM includes Net-Challenge Simulation Software, including 6 labs, and the Wireshark Network Protocol Analyzer Software examples.

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Sample Content

Table of Contents

Introduction xxii

Chapter 1 Introduction to Computer Networks 2

1-1 INTRODUCTION 5

1-2 NETWORK TOPOLOGIES 7

    Section 1-2 Review 11

    Test Your Knowledge 12

1-3 THE OSI MODEL 12

    Section 1-3 Review 14

    Test Your Knowledge 15

1-4 THE ETHERNET LAN 15

    IP Addressing 19

    Section 1-4 Review 21

    Test Your Knowledge 22

1-5 HOME NETWORKING 22

    Securing the Home Network 34

    IP Addressing in the Home Network 36

    Section 1-5 Review 37

    Test Your Knowledge 38

1-6 ASSEMBLING AN OFFICE LAN 38

    Section 1-6 Review 43

    Test Your Knowledge 44

1-7 TESTING AND TROUBLESHOOTING A LAN 44

    Section 1-7 Review 46

    Test Your Knowledge 47

Summary 48

Questions and Problems 48

    Section 1-1 48

    Section 1-2 49

    Section 1-3 50

    Section 1-4 51

    Section 1-5 52

    Section 1-6 54

    Section 1-7 55

    Certification Questions 55

Chapter 2 Physical Layer Cabling: Twisted Pair 58

2-1 INTRODUCTION 61

2-2 STRUCTURED CABLING 62

    Horizontal Cabling 65

    Section 2-2 Review 68

    Test Your Knowledge 69

2-3 UNSHIELDED TWISTED-PAIR CABLE 69

    Shielded Twisted-pair Cable 72

    Section 2-3 Review 72

    Test Your Knowledge 72

2-4 TERMINATING CAT6/5E/5 UTP CABLES 73

    Computer Communication 74

    Straight-through and Crossover Patch Cables 76

    Section 2-4 Review 85

    Test Your Knowledge 85

2-5 CABLE TESTING AND CERTIFICATION 86

    Section 2-5 Review 90

    Test Your Knowledge 90

2-6 10 Gigabit Ethernet over Copper 90

    Overview 91

    Alien Crosstalk 91

    Signal Transmission 93

    Section 2-6 Review 94

    Test Your Knowledge 94

2-7 TROUBLESHOOTING CABLING SYSTEMS 94

    Installation 94

    Cable Stretching 95

    Cable Failing to Meet Manufacturer

    Specifications 95

    CAT5e Cable Test Examples 96

Section 2-7 Review 103

    Test Your Knowledge 104

Summary 105

Questions and Problems 105

    Section 2-1 105

    Section 2-3 106

    Section 2-4 107

    Section 2-5 109

    Section 2-6 109

    Certification Questions 112

Chapter 3 Physical Layer Cabling: Fiber Optics 114

3-1 INTRODUCTION 117

3-2 THE NATURE OF LIGHT 119

    Graded-Index Fiber 123

    Single-Mode Fibers 124

    Section 3-2 Review 125

    Test Your Knowledge 125

3-3 FIBER ATTENUATION AND DISPERSION 126

    Attenuation 126

    Dispersion 127

    Dispersion Compensation 129

    Section 3-3 Review 130

    Test Your Knowledge 130

3-4 OPTICAL COMPONENTS 130

    Intermediate Components 132

    Detectors 132

    Fiber Connectorization 134

    Section 3-4 Review 135

    Test Your Knowledge 135

3-5 OPTICAL NETWORKING 136

    Defining Optical Networking 136

    Building Distribution 138

    Campus Distribution 141

    Section 3-5 Review 144

    Test Your Knowledge 145

3-6 SAFETY 145

    Section 3-6 Review 146

    Test Your Knowledge 146

Summary 147

Questions and Problems 147

    Section 3-1 147

    Section 3-2 147

    Section 3-3 148

    Section 3-4 148

    Section 3-5 149

    Section 3-6 149

    Certification Questions 150

Chapter 4 Wireless Networking 152

4-1 INTRODUCTION 154

4-2 THE IEEE 802.11 WIRELESS LAN STANDARD 155

    Section 4-2 Review 162

    Test Your Knowledge 162

4-3 802.11 WIRELESS NETWORKING 163

    Section 4-3 Review 171

    Test Your Knowledge 172

4-4 Bluetooth, WiMAX, and RFID 172

    Bluetooth 172

    WiMAX 174

    Radio Frequency Identification 175

    Section 4-4 Review 179

    Test Your Knowledge 179

4-5 SECURING WIRELESS LANS 179

    Section 4-5 Review 182

    Test Your Knowledge 182

4-6 CONFIGURING A POINT-TO-MULTIPOINT

WIRELESS LAN: A CASE STUDY 183

    1. Antenna Site Survey 183

    2. Establishing a Point-to-Point Wireless Link to the Home Network 184

    3—4. Configuring the Multipoint Distribution/Conducting an RF Site Survey 185

    5. Configuring the Remote Installations 187

    Section 4-6 Review 187

    Test Your Knowledge 188

Summary 189

Questions and Problems 189

    Section 4-2 189

    Section 4-3 190

    Section 4-4 191

    Section 4-5 192

    Section 4-6 193

    Critical Thinking 193

    Certification Questions 194

Chapter 5 Interconnecting the LANs 196

5-1 INTRODUCTION 198

5-2 THE NETWORK BRIDGE 199

    Section 5-2 Review 203

    Test Your Knowledge 204

5-3 THE NETWORK SWITCH 204

    Hub—Switch Comparison 206

    Managed Switches 209

    Multilayer Switches 214

    Section 5-3 Review 214

    Test Your Knowledge 215

5-4 THE ROUTER 215

    The Router Interface: Cisco 2800 Series 216

    The Router Interface–Cisco 2600 Series 217

    The Router Interface–Cisco 2500 Series 218

    Section 5-4 Review 220

    Test Your Knowledge 220

5-5 INTERCONNECTING LANS WITH THE ROUTER 221

    Gateway Address 223

    Network Segments 223

    Section 5-5 Review 224

    Test Your Knowledge 224

5-6 CONFIGURING THE NETWORK INTERFACE–AUTO-NEGOTIATION 225

    Auto-Negotiation Steps 225

    Full-Duplex/Half-Duplex 226

    Section 5-6 Review 228

    Test Your Knowledge 228

Summary 229

Questions and Problems 229

    Section 5-2 229

    Section 5-3 230

    Section 5-4 232

    Section 5-5 232

    Section 5-6 233

    Critical Thinking 233

    Certification Questions 234

Chapter 6 TCP/IP 236

6-1 INTRODUCTION 238

6-2 THE TCP/IP LAYERS 239

    The Application Layer 240

    The Transport Layer 241

    The Internet Layer 245

    The Network Interface Layer 248

    Section 6-2 Review 248

    Test Your Knowledge 249

6-3 NUMBER CONVERSION 249

    Binary-to-Decimal Conversion 249

    Decimal-to-Binary Conversion 251

    Hexadecimal Numbers 252

    Section 6-3 Review 255

    Test Your Knowledge 255

6-4 IPv4 ADDRESSING 255

    Private IP Addresses n hj h 258

    IP Address Assignment 258

    Section 6-4 Review 259

    Test Your Knowledge 259

6-5 SUBNET MASKS 259

    Section 6-5 Review 266

    Test Your Knowledge 266

6-6 CIDR BLOCKS 267

    Section 6-6 Review 269

    Test Your Knowledge 270

6-7 IPV6 ADDRESSING 270

    Section 6-7 Review 273

    Test Your Knowledge 273

Summary 274

Questions and Problems 274

    Section 6-2 274

    Section 6-3 276

    Section 6-4 277

    Section 6-5 278

    Section 6-6 280

    Section 6-7 282

    Critical Thinking 282

    Certification Questions 283

Chapter 7 Introduction to Router Configuration 286

7-1 INTRODUCTION 288

7-2 ROUTER FUNDAMENTALS 289

    Layer 3 Networks 290

    Section 7-2 Review 296

    Test Your Knowledge 296

7-3 THE CONSOLE PORT CONNECTION 296

    Configuring the HyperTerminal

    Software (Windows) 298

    Configuring the Z-Term Serial

    Communications Software (Mac) 300

    Section 7-3 Review 302

    Test Your Knowledge 302

7-4 THE ROUTER’S USER EXEC MODE (ROUTER>) 303

    The User EXEC Mode 303

    Router Configuration Challenge: The User

    EXEC Mode 305

    Section 7-4 Review 308

    Test Your Knowledge 308

7-5 THE ROUTER’S PRIVILEGED EXEC MODE (ROUTER#) 308

    Hostname 309

    Enable Secret 310

    Setting the Line Console Passwords 310

    Fast Ethernet Interface Configuration 311

    Serial Interface Configuration 312

    Router Configuration Challenge: The

    Privileged EXEC Mode 314

    Section 7-5 Review 316

    Test Your Knowledge 316

Summary 317

Questions and Problems 317

    Section 7-1 317

    Section 7-2 317

    Section 7-3 320

    Section 7-4 320

    Section 7-5 321

    Critical Thinking 322

    Certification Questions 323

Chapter 8 Introduction to Switch Configuration 326

8-1 INTRODUCTION 328

8-2 Introduction to VLANs 329

    Virtual LAN 329

    Section 8-2 Review 330

    Test Your Knowledge 330

8-3 Introduction to Switch Configuration 330

    Hostname 331

    Enable Secret 332

    Setting the Line Console Passwords 332

    Static VLAN Configuration 333

    Networking Challenge–Switch Configuration 337

    Section 8-3 Review 337

    Test Your Knowledge 338

8-4 Spanning-Tree Protocol 338

    Section 8-4 Review 339

    Test Your Knowledge 340

8-5 Network Management 340

    Configuring SNMP 341

    Section 8-5 Review 344

    Test Your Knowledge 344

8-6 Power over Ethernet 344

    Section 8-6 Review 346

    Test Your Knowledge 347

Summary 348

Questions and Problems 348

    Section 8-2 348

    Section 8-3 349

    Section 8-4 350

    Section 8-5 350

    Section 8-6 352

    Critical Thinking 353

    Certification Questions 353

Chapter 9 Routing Protocols 356

9-1 INTRODUCTION 358

9-2 STATIC ROUTING 359

    Gateway of Last Resort 366

    Configuring Static Routes 366

    Networking Challenge: Chapter 9–

    Static Routes 368

    Section 9-2 Review 369

    Test Your Knowledge 369

9-3 DYNAMIC ROUTING PROTOCOLS 370

    Section 9-3 Review 371

    Test Your Knowledge 371

9-4 DISTANCE VECTOR PROTOCOLS 372

    Section 9-4 Review 374

    Test Your Knowledge 374

9-5 LINK STATE PROTOCOLS 375

    Section 9-5 Review 378

    Test Your Knowledge 378

9-6 HYBRID PROTOCOLS 378

    Section 9-6 Review 379

    Test Your Knowledge 379

9-7 CONFIGURING RIP and RIPv2 379

    Configuring Routes with RIP 381

    Configuring Routes with RIP Version 2 385

    Networking Challenge–RIP V2 387

    Section 9-7 Review 388

    Test Your Knowledge 388

Summary 389

Questions and Problems 389

    Section 9-2 389

    Section 9-3 391

    Section 9-4 392

    Section 9-5 392

    Section 9-6 393

    Section 9-7 394

    Critical Thinking 395

    Certification Questions 395

Chapter 10 Internet Technologies: Out to the Internet 398

10-1 INTRODUCTION 401

10-2 THE LINE CONNECTION 402

    Data Channels 403

    Point of Presence 404

    Section 10-2 Review 406

    Test Your Knowledge 407

10-3 REMOTE ACCESS 407

    Analog Modem Technologies 407

    Cable Modems 408

    xDSL Modems 408

    The Remote Access Server 410

    Section 10-3 Review 411

    Test Your Knowledge 411

10-4 Metro Ethernet/Carrier Ethernet 412

    Ethernet Service Types 413

    Service Attributes 414

    Section 10-4 Review 415

    Test Your Knowledge 416

10-5 NETWORK SERVICES–DHCP AND DNS 416

    The DHCP Data Packets 418

    DHCP Deployment 419

    Network Services: DNS 420

    Internet Domain Name 421

    Section 10-5 Review 423

    Test Your Knowledge 423

10-6 INTERNET ROUTING–BGP 424

    Section 10-6 Review 426

    Test Your Knowledge 427

10-7 ANALYZING INTERNET DATA TRAFFIC 427

    Utilization/Errors Strip Chart 428

    Network Layer Matrix 429

    Network Layer Host Table 430

    Frame Size Distribution 430

    Section 10-7 Review 431

    Test Your Knowledge 432

Summary 433

Questions and Problems 433

    Section 10-2 433

    Section 10-3 434

    Section 10-4 434

    Section 10-5 435

    Section 10-6 435

    Certification Questions 436

Chapter 11 Troubleshooting 438

11-1 INTRODUCTION 440

11-2 ANALYZING COMPUTER NETWORKS 441

    Using Wireshark to Inspect Data Packets 442

    Using Wireshark to Capture Packets 444

    Section 11-2 Review 446

    Test Your Knowledge 446

11-3 ANALYZING COMPUTER NETWORKS–FTP DATA PACKETS 446

    Section 11-3 Review 447

    Test Your Knowledge 448

11-4 ANALYZING CAMPUS NETWORK DATA TRAFFIC 448

    Section 11-4 Review 450

    Test Your Knowledge 450

11-5 TROUBLESHOOTING THE ROUTER INTERFACE 451

    Section 11-5 Review 454

    Test Your Knowledge 454

11-6 TROUBLESHOOTING THE SWITCH INTERFACE 454

    Section 11-6 Review 457

    Test Your Knowledge 457

11-7 TROUBLESHOOTING FIBER OPTICS–The OTDR 457

    Section 11-7 Review 459

    Test Your Knowledge 459

Summary 460

Questions and Problems 460

    Section 11-2 460

    Section 11-3 461

    Section 11-4 462

    Section 11-5 462

    Section 11-6 462

    Section 11-7 463

    Certification Questions 463

Chapter 12 Network Security 466

12-1 INTRODUCTION 468

12-2 INTRUSION (HOW AN ATTACKER GAINS CONTROL OF A NETWORK) 469

    Social Engineering 469

    Password Cracking 470

    Packet Sniffing 470

    Vulnerable Software 471

    Viruses and Worms 473

    Section 12-2 Review 474

    Test Your Knowledge 474

12-3 DENIAL OF SERVICE 475

    Distributed Denial-of-service Attacks 476

    Section 12-3 Review 477

    Test Your Knowledge 477

12-4 SECURITY SOFTWARE AND HARDWARE 477

    Antivirus Software 477

    Personal Firewall 478

    Firewall 484

    Other Security Appliances 485

    Section 12-4 Review 486

    Test Your Knowledge 486

12-5 INTRODUCTION TO VIRTUAL PRIVATE NETWORK 486

    VPN Tunneling Protocols 487

    Configuring a Remote Access VPN Server 489

    Configuring a Remote Client’s VPN

    Connection 489

    Cisco VPN Client 491

    Section 12-5 Review 495

    Test Your Knowledge 495

Summary 497

Questions and Problems 497

    Section 12-2 497

    Section 12-3 498

    Section 12-4 498

    Section 12-5 499

    Critical Thinking 500

    Certification Questions 500

Glossary of Key Terms 503

TOC, 1/31/2012, 9780789749031

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