Networking Essentials

Jeff Beasley is a professor in the Information and Communications Technology program at New Mexico State University, where he teaches computer networking and many related topics. He is coauthor of Modern Electronic Communication, 9th edition, author of Networking, 2nd edition, and coauthor of Networking Essentials, 4th edition, and Practical Guide to Advanced Networking. Piyasat Nilkaew is the director of Telecommunications and Networking at New Mexico State University. He has more than 20 years of experience in network management and consulting. He has extensive expertise in deploying and integrating multi-protocol and multi-vendor data, voice, and video network solutions. He is coauthor of Networking Essentials, 4th edition, and Practical Guide to Advanced Networking.

Introduction xxiii

CHAPTER 1 Introduction to Computer Networks 2

1-1 Introduction 4

1-2 Network Topologies 6

1-3 The OSI Model 12

1-4 The Ethernet LAN 16

1-5 Home Networking 24

1-6 Assembling an Office LAN 38

1-7 Testing and Troubleshooting a LAN 45

CHAPTER 2 Physical Layer Cabling: Twisted-Pair 62

2-1 Introduction 65

2-2 Structured Cabling 66

2-3 Twisted-Pair Cable 74

2-4 Terminating Twisted-Pair Cables 78

2-5 Cable Testing and Certification 92

2-6 10 Gigabit Ethernet over Copper 97

2-7 Troubleshooting Cabling Systems 102

CHAPTER 3 Physical Layer Cabling: Fiber Optics 124

3-1 Introduction 126

3-2 The Nature of Light 129

3-3 Fiber Attenuation and Dispersion 136

3-4 Optical Components 141

3-5 Optical Networking 147

3-6 Safety 160

3-7 Troubleshooting Fiber Optics: The OTDR 162

CHAPTER 4 Wireless Networking 172

4-1 Introduction 174

4-2 The IEEE 802.11 Wireless LAN Standard 175

4-3 802.11 Wireless Networking 185

4-4 Bluetooth, WiMAX, RFID, and Mobile Communications 197

4-5 Configuring a Point-to-Multipoint Wireless LAN: A Case Study 206

4-6 Troubleshooting Wireless Networks 213

CHAPTER 5 Interconnecting the LANs 228

5-1 Introduction 230

5-2 The Network Bridge 232

5-3 The Network Switch 237

5-4 The Router 249

5-5 The Console Port Connection 254

5-6 Interconnecting LANs with the Router 262

5-7 Interconnecting LANs and WANs 267

CHAPTER 6 TCP/IP 290

6-1 Introduction 292

6-2 The TCP/IP Layers 294

6-3 Number Conversion 306

6-4 IPv4 Addressing 312

6-5 Subnet Masks: Subnetting and Supernetting 317

6-6 Supernetting, CIDR Blocks, and VLSM 328

6-7 IPv6 Addressing 333

CHAPTER 7 Introduction to Router Configuration 354

7-1 Introduction 356

7-2 Router Fundamentals 358

7-3 The Router’s User EXEC Mode (Router>) 366

7-4 The Router’s Privileged EXEC Mode (Router#) 373

7-5 Configuring the Network Interface: Auto-negotiation 383

7-6 Troubleshooting the Router Interface 387

CHAPTER 8 Introduction to Switch Configuration 404

8-1 Introduction 406

8-2 Introduction to VLANs 407

8-3 Introduction to Switch Configuration 410

8-4 Spanning Tree Protocol 422

8-5 Power over Ethernet 425

8-6 Troubleshooting the Switch Interface 429

CHAPTER 9 Routing Protocols 444

9-1 Introduction 446

9-2 Static Routing 447

9-3 Dynamic Routing Protocols 460

9-4 Distance Vector Protocols 463

9-5 Configuring RIP and RIPv2 466

9-6 Link State Protocols 476

9-7 Configuring the Open Shortest Path First (OSPF) Routing Protocol 481

9-8 Advanced Distance Vector Protocol: Configuring Enhanced Interior

9-9 Internet Routing with Border Gateway Protocol (BGP) 496

9-10 IPv6 Routing 499

CHAPTER 10 Managing the Network Infrastructure 524

10-1 Introduction 527

10-2 Domain Name and IP Address Assignment 528

10-3 IP Address Management with DHCP 531

10-4 Scaling a Network with NAT and PAT 537

10-5 Domain Name System (DNS) 539

10-6 Network Management Protocols 546

10-7 Analyzing Network Traffic 552

10-8 Network Analyzer: Wireshark 560

10-9 Analyzing Computer Networks: FTP Data Packets 566

10-10 Troubleshooting IP Networks 568

CHAPTER 11 Network Security 590

11-1 Introduction 592

11-2 Intrusion: How Attackers Gain Control of a Network 594

11-3 Denial-of-Service 606

11-4 Security Software and Hardware 610

11-5 Managing Network Access 623

11-6 Router Security 626

11-7 Switch Security 631

11-8 Wireless Security 637

11-9 Remote Access and VPN Technologies 642

11-10 Physical Security 659

CHAPTER 12 Cloud Computing and Virtualization 676

12-1 Introduction 678

12-2 Virtualization 679

12-3 Cloud Computing 692

12-4 Enterprise Storage 698

CHAPTER 13 Codes and Standards 706

13-1 Introduction 708

13-2 Safety Standards and Codes 708

13-3 Industry Regulatory Compliance 718

13-4 Business Policies, Procedures, and Other Best Practices 723

13-5 Business Continuity and Disaster Recovery 729

Glossary 742

Online Only Elements:

Net-Challenge Software

Wireshark Captures

Network+ quizzes

9780137455928, TOC, 9/28/2021