Introduction xxiiCHAPTER 1 Introduction to Computer Networks 2 Chapter Outline 3 Objectives 3 Key Terms 3 1-1 Introduction 5 1-2 Network Topologies 7 Section 1-2 Review 11 Test Your Knowledge 11 1-3 The OSI Model 12 Section 1-3 Review 14 Test Your Knowledge 15 1-4 The Ethernet LAN 16 IP Addressing 20 Section 1-4 Review 22 Test Your Knowledge 23 1-5 Home Networking 24 Securing a Home Network 33 IP Addressing in a Home Network 34 Section 1-5 Review 36 Test Your Knowledge 37 1-6 Assembling an Office LAN 38 Section 1-6 Review 43 Test Your Knowledge 43 1-7 Testing and Troubleshooting a LAN 44 Section 1-7 Review 47 Test Your Knowledge 47 Summary 48 Questions and Problems 48 Certification Questions 56CHAPTER 2 Physical Layer Cabling: Twisted-Pair 60 Chapter Outline 61 Objectives 61 Key Terms 61 2-1 Introduction 63 2-2 Structured Cabling 64 Horizontal Cabling 67 Section 2-2 Review 70 Test Your Knowledge 70 2-3 Unshielded Twisted-Pair Cable 71 Shielded Twisted-Pair Cable 74 Section 2-3 Review 75 Test Your Knowledge 75 2-4 Terminating CAT6/5e/5 UTP Cables 76 Computer Communication 78 Straight-through and Crossover Patch Cables 80 Section 2-4 Review 87 Test Your Knowledge 88 2-5 Cable Testing and Certification 89 Section 2-5 Review 93 Test Your Knowledge 93 2-6 10 Gigabit Ethernet over Copper 94 Overview 94 Alien Crosstalk 95 Signal Transmission 96 Section 2-6 Review 97 Test Your Knowledge 97 2-7 Troubleshooting Cabling Systems 98 Installation 98 Cable Stretching 99 Cable Failing to Meet Manufacturer Specifications 99 CAT5e Cable Test Examples 100 Section 2-7 Review 106 Test Your Knowledge 106 Summary 107 Questions and Problems 107 Certification Questions 115CHAPTER 3 Physical Layer Cabling: Fiber Optics 118 Chapter Outline 119 Objectives 119 Key Terms 119 3-1 Introduction 120 3-2 The Nature of Light 123 Graded-Index Fiber 127 Single-Mode Fibers 127 Section 3-2 Review 128 Test Your Knowledge 129 3-3 Fiber Attenuation and Dispersion 129 Attenuation 129 Dispersion 131 Dispersion Compensation 132 Section 3-3 Review 133 Test Your Knowledge 133 3-4 Optical Components 134 Intermediate Components 135 Detectors 136 Fiber Connectorization 138 Section 3-4 Review 139 Test Your Knowledge 140 3-5 Optical Networking 140 Defining Optical Networking 141 Building Distribution 143 Campus Distribution 147 Section 3-5 Review 150 Test Your Knowledge 150 3-6 Safety 151 Section 3-6 Review 152 Test Your Knowledge 152 Summary 153 Questions and Problems 153 Certification Questions 156CHAPTER 4 Wireless Networking 158 Chapter Outline 159 Objectives 159 Key Terms 159 4-1 Introduction 160 4-2 The IEEE 802.11 Wireless LAN Standard 161 Section 4-2 Review 169 Test Your Knowledge 170 4-3 802.11 Wireless Networking 170 Section 4-3 Review 180 Test Your Knowledge 181 4-4 Bluetooth, WiMAX, RFID, and Mobile Communications 181 Bluetooth 181 WiMAX 184 Radio Frequency Identification 185 Mobile (Cellular) Communications 188 Section 4-4 Review 189 Test Your Knowledge 189 4-5 Configuring a Point-to-Multipoint Wireless LAN: A Case Study 190 Step 1. Conducting an Antenna Site Survey 191 Step 2. Establishing a Point-to-Point Wireless Link to the Home Network 191 Steps 3 and 4. Configuring the Multipoint Distribution and Conducting an RF Site Survey 192 Step 5. Configuring the Remote Installations 194 Section 4-5 Review 195 Test Your Knowledge 195 Summary 196 Questions and Problems 196 Critical Thinking 200 Certification Questions 201CHAPTER 5 Interconnecting the LANs 204 Chapter Outline 205 Objectives 205 Key Terms 205 5-1 Introduction 206 5-2 The Network Bridge 207 Section 5-2 Review 212 Test Your Knowledge 213 5-3 The Network Switch 213 Hub and Switch Comparison 216 Managed Switches 218 Multilayer Switches 223 Section 5-3 Review 224 Test Your Knowledge 224 5-4 The Router 225 The Router Interface: Cisco 2800 Series 226 Section 5-4 Review 229 Test Your Knowledge 230 5-5 Interconnecting LANs with the Router 230 Gateway Address 233 Network Segments 233 Section 5-5 Review 233 Test Your Knowledge 234 5-6 Configuring the Network Interface: Auto-negotiation 234 Auto-negotiation Steps 235 Full-Duplex/Half-Duplex 235 Section 5-6 Review 237 Test Your Knowledge 237 5-7 The Console Port Connection 238 Configuring the HyperTerminal Software (Windows) 240 Configuring the ZTerm Serial Communications Software (Mac) 242 Section 5-7 Review 244 Test Your Knowledge 244 Summary 245 Questions and Problems 245 Critical Thinking 250 Certification Questions 251CHAPTER 6 TCP/IP 254 Chapter Outline 255 Objectives 255 Key Terms 255 6-1 Introduction 256 6-2 The TCP/IP Layers 257 The Application Layer 258 The Transport Layer 260 The Internet Layer 264 The Network Interface Layer 266 Section 6-2 Review 267 Test Your Knowledge 267 6-3 Number Conversion 268 Binary-to-Decimal Conversion 268 Decimal-to-Binary Conversion 270 Hexadecimal Numbers 271 Section 6-3 Review 274 Test Your Knowledge 274 6-4 IPv4 Addressing 274 Section 6-4 Review 278 Test Your Knowledge 278 6-5 Subnet Masks 278 Section 6-5 Review 285 Test Your Knowledge 286 6-6 CIDR Blocks 286 Section 6-6 Review 289 Test Your Knowledge 289 6-7 IPv6 Addressing 290 IPv6 CIDR 294 Section 6-7 Review 295 Test Your Knowledge 295 Summary 296 Questions and Problems 296 Critical Thinking 305 Certification Questions 306CHAPTER 7 Introduction to Switch Configuration 310 Chapter Outline 311 Objectives 311 Key Terms 311 7-1 Introduction 312 7-2 Introduction to VLANs 313 Virtual LANs 313 Section 7-2 Review 315 Test Your Knowledge 315 7-3 Introduction to Switch Configuration 316 Hostname 316 Enable Secret 317 Setting the Line Console Passwords 317 Static VLAN Configuration 319 Networking Challenge: Switch Configuration 323 Section 7-3 Review 323 Test Your Knowledge 324 7-4 Spanning-Tree Protocol 324 Section 7-4 Review 326 Test Your Knowledge 327 7-5 Network Management 327 Configuring SNMP 328 Section 7-5 Review 331 Test Your Knowledge 331 7-6 Power over Ethernet 332 Section 7-6 Review 334 Test Your Knowledge 335 7-7 Switch Security 335 Switch Port Security 337 STP Special Features 338 Section 7-7 Review 340 Test Your Knowledge 340 Summary 341 Questions and Problems 341 Critical Thinking 348 Certification Questions 348CHAPTER 8 Introduction to Router Configuration 352 Chapter Outline 353 Objectives 353 Key Terms 353 8-1 Introduction 354 8-2 Router Fundamentals 355 Layer 3 Networks 356 Section 8-2 Review 362 Test Your Knowledge 362 8-3 The Router's User EXEC Mode (Router>) 363 The User EXEC Mode 363 Router Configuration Challenge: User EXEC Mode 366 Section 8-3 Review 368 Test Your Knowledge 369 8-4 The Router's Privileged EXEC Mode (Router#) 369 Hostname 371 Enable Secret 371 Setting the Line Console Passwords 372 FastEthernet Interface Configuration 373 Serial Interface Configuration 374 Router Configuration Challenge: Privileged EXEC Mode 376 Section 8-4 Review 378 Test Your Knowledge 379 Summary 380 Questions and Problems 380 Critical Thinking 385 Certification Questions 387CHAPTER 9 Routing Protocols 390 Chapter Outline 391 Objectives 391 Key Terms 391 9-1 Introduction 392 9-2 Static Routing 393 Gateway of Last Resort 400 Configuring Static Routes 400 Networking Challenge: Static Routes 403 Section 9-2 Review 404 Test Your Knowledge 404 9-3 Dynamic Routing Protocols 405 Section 9-3 Review 406 Test Your Knowledge 407 9-4 Distance Vector Protocols 407 Section 9-4 Review 410 Test Your Knowledge 410 9-5 Configuring RIP and RIPv2 410 Configuring Routes with RIP 412 Configuring Routes with RIPv2 417 Networking Challenge: RIPv2 418 Section 9-5 Review 419 Test Your Knowledge 420 9-6 Link State Protocols 420 Section 9-6 Review 423 Test Your Knowledge 423 9-7 Configuring the Open Shortest Path First (OSPF) Routing Protocol 424 Networking Challenge: OSPF 429 Section 9-7 Review 430 Test Your Knowledge 430 9-8 Advanced Distance Vector Protocol: Configuring Enhanced Interior Gateway Routing Protocol (EIGRP) 430 Configuring Routes with EIGRP 431 Networking Challenge: EIGRP 436 Section 9-8 Review 437 Test Your Knowledge 437 9-9 IPv6 Routing 438 IPv6 Static Routing 438 RIP for IPv6 438 OSPF for IPv6 439 EIGRP for IPv6 440 Section 9-9 Review 440 Test Your Knowledge 440 Summary 442 Questions and Problems 442 Critical Thinking 455 Certification Questions 456CHAPTER 10 Internet Technologies: Out to the Internet 458 Chapter Outline 459 Objectives 459 Key Terms 459 10-1 Introduction 461 10-2 The Line Connection 463 Data Channels 464 Point of Presence 465 Section 10-2 Review 468 Test Your Knowledge 468 10-3 Remote Access 468 Analog Modem Technologies 469 Cable Modems 470 xDSL Modems 470 Remote Access Server 472 Section 10-3 Review 475 Test Your Knowledge 475 10-4 Metro Ethernet/Carrier Ethernet 476 Ethernet Service Types 477 Service Attributes 479 Section 10-4 Review 479 Test Your Knowledge 480 10-5 Network Services: DHCP and DNS 480 The DHCP Data Packets 482 DHCP Deployment 483 Network Services: DNS 485 Internet Domain Names 486 Section 10-5 Review 491 Test Your Knowledge 492 10-6 Internet Routing: BGP 492 Section 10-6 Review 495 Test Your Knowledge 495 10-7 Analyzing Internet Data Traffic 495 Utilization/Errors Strip Chart 497 Network Layer Matrix 497 Network Layer Host Table 498 Frame Size Distribution 498 Section 10-7 Review 499 Test Your Knowledge 500 Summary 501 Questions and Problems 501 Certification Questions 507CHAPTER 11 Troubleshooting 510 Chapter Outline 511 Objectives 511 Key Terms 511 11-1 Introduction 512 11-2 Analyzing Computer Networks 514 Using Wireshark to Inspect Data Packets 514 Using Wireshark to Capture Packets 517 Section 11-2 Review 519 Test Your Knowledge 519 11-3 Analyzing Computer Networks: FTP Data Packets 519 Section 11-3 Review 520 Test Your Knowledge 521 11-4 Analyzing Campus Network Data Traffic 521 Section 11-4 Review 524 Test Your Knowledge 524 11-5 Troubleshooting the Router Interface 525 Section 11-5 Review 529 Test Your Knowledge 529 11-6 Troubleshooting the Switch Interface 530 Section 11-6 Review 534 Test Your Knowledge 534 11-7 Troubleshooting Fiber Optics: The OTDR 535 Section 11-7 Review 537 Test Your Knowledge 537 11-8 Troubleshooting Wireless Networks 537 Hardware Issues 537 Signal Strength Problems 538 Frequency Interference Problems 538 Load Issues 538 DHCP Issues 538 SSID Issues 538 Securing Wi-Fi Issues 538 Wireless Printer Issues 538 Wireless Router Issues 539 Extending the Wireless Range 539 Selecting Wireless Channels 539 Wireless Compatibility 539 Cable Issues 540 Switch Uptime 540 Section 11-8 Review 540 Test Your Knowledge 540 11-9 Troubleshooting IP Networks 541 Verifying Network Settings 543 Investigating IP Address Issues 543 Finding Subnet Mask Issues 544 Looking for Gateway Issues 544 Identifying Name Resolution Issues 544 Investigating DHCP Issues 545 Checking for Blocked TCP/UDP Ports 546 Section 11-9 Review 546 Test Your Knowledge 547 Summary 548 Questions and Problems 548 Certification Questions 555CHAPTER 12 Network Security 558 Chapter Outline 559 Objectives 559 Key Terms 559 12-1 Introduction 560 12-2 Intrusion: How Attackers Gain Control of a Network 562 Social Engineering 562 Password Cracking 563 Packet Sniffing 564 Vulnerable Software 566 Preventing Vulnerable Software Attacks 567 Viruses and Worms 569 Section 12-2 Review 570 Test Your Knowledge 571 12-3 Denial of Service 571 Distributed Denial of Service Attacks 574 Section 12-3 Review 574 Test Your Knowledge 574 12-4 Security Software and Hardware 575 Antivirus Software 575 Personal Firewalls 575 Configuring Firewall Settings for Windows 10 576 Configuring Firewall Settings for Mac OS X 580 Configuring Firewall Settings for Linux 581 Firewalls 582 Other Security Appliances 584 Computer Forensics 585 Section 12-4 Review 586 Test Your Knowledge 587 12-5 Managing Network Access 587 Section 12-5 Review 589 Test Your Knowledge 589 12-6 Introduction to Virtual Private Networks 590 VPN Tunneling Protocols 591 Configuring a Remote Access VPN Server 593 Configuring a Remote Client's VPN Connection 593 Windows 10/8/7 VPN Client 593 Mac OS X VPN Client 594 Cisco VPN Client 595 Section 12-6 Review 599 Test Your Knowledge 599 12-7 Wireless Security 600 Section 12-7 Review 604 Test Your Knowledge 604 Summary 605 Questions and Problems 605 Critical Thinking 610 Certification Questions 611CHAPTER 13 Cloud Computing and Virtualization 614 Chapter Outline 615 Objectives 615 Key Terms 615 13-1 Introduction 616 13-2 Virtualization 617 Setting Up Virtualization on Windows 8 or 10 620 Section 13-2 Review 628 Test Your Knowledge 628 13-3 Cloud Computing 629 Infrastructure as a Service (IaaS) 631 Platform as a Service (PaaS) 632 Software as a Service (SaaS) 632 Cloud Infrastructures 632 Section 13-3 Review 633 Test Your Knowledge 634 13-4 Enterprise Storage 634 Section 13-4 Review 635 Test Your Knowledge 635 Summary 637 Questions and Problems 637 Certification Questions 640CHAPTER 14 Codes and Standards 642 Chapter Outline 643 Objectives 643 Key Terms 643 14-1 Introduction 644 14-2 Safety Standards and Codes 645 Design and Construction Requirements for Exit Routes (29 CFR 1910.36) 645 Maintenance, Safeguards, and Operational Features for Exit Routes (29 CFR 1910.37) 646 Emergency Action Plans (29 CFR 1910.38) 647 Fire Prevention Plans (29 CFR 1910.39) 647 Portable Fire Extinguishers (29 CFR 1910.157) 648 Fixed Extinguishing Systems (29 CFR 1910.160) 648 Fire Detection Systems (29 CFR 1910.164) 650 Employee Alarm Systems (29 CFR 1910.165) 650 Hazard Community

Provides a practical approach to introductory networking concepts Presents tons of hands-on activities to help students learn by doing Clearly outlines goals for each chapter with chapter-opening objectives and introductions Highlights key terms and acronyms in the margins to enhance retention of networking terminology Guides readers through application of concepts through configuring, analyzing, and troubleshooting sections Includes extensive problem sets, summaries, questions, and problems (including critical thinking questions) at the end of each chapter to assess learning Allows students to practice custom-designed, hands-on router and switch configuration exercises with the Net-Challenge software

Most changes will be small additions/updates to existing chapters and question sets. Major new topics include:Chapter 8  Switch SecurityChapter 11 Troubleshooting IP NetworksChapter 12 Authorization and Access ControlChapter 14 Best Practices and Disaster Recovery