Introduction xxxv Assessment Test xlvi Chapter 1 Introduction to Networks 1 First Things First: What''s a Network? 2 Physical Network Topologies 14 Topology Selection, Backbones, and Segments 22 Summary 29 Exam Essentials 29 Written Lab 30 Review Questions 31 Chapter 2 The Open Systems Interconnection (OSI) Reference Model 35 Internetworking Models 36 Introduction to Encapsulation 53 Modulation Techniques 54 Summary 55 Exam Essentials 56 Written Lab 56 Review Questions 57 Chapter 3 Networking Connectors and Wiring Standards 61 Physical Media 63 Cable Properties 82 Wiring Standards 84 Installing Wiring Distributions 92 Summary 94 Exam Essentials 95 Written Lab 95 Review Questions 97 Chapter 4 The Current Ethernet Specifications 101 Network Basics 102 Ethernet Basics 104 Ethernet at the Data Link Layer 110 Ethernet at the Physical Layer 117 Ethernet over Other Standards (IEEE 1905.1- 2013) 123 Summary 127 Exam Essentials 127 Written Lab 127 Review Questions 129 Chapter 5 Networking Devices 133 Common Network Connectivity Devices 135 Other Specialized Devices 157 Networked Devices 174 Planning and Implementing a Basic SOHO Network Using Network Segmentation 175 Summary 186 Exam Essentials 186 Written Lab 187 Review Questions 189 Chapter 6 Introduction to the Internet Protocol 193 Introducing TCP/IP 195 Data Encapsulation 230 Summary 234 Exam Essentials 235 Written Lab 236 Review Questions 237 Chapter 7 IP Addressing 241 IP Terminology 243 The Hierarchical IP Addressing Scheme 244 IPv4 Address Types 251 Internet Protocol Version 6 (IPv6) 253 Summary 263 Exam Essentials 264 Written Labs 265 Review Questions 267 Chapter 8 IP Subnetting, Troubleshooting IP, and Introduction to NAT 271 Subnetting Basics 273 Troubleshooting IP Addressing 296 Introduction to Network Address Translation (NAT) 304 Summary 309 Exam Essentials 309 Written Lab 310 Review Questions 311 Chapter 9 Introduction to IP Routing 319 Routing Basics 320 The IP Routing Process 323 Testing Your IP Routing Understanding 329 Static and Dynamic Routing 331 Summary 334 Exam Essentials 334 Written Lab 335 Review Questions 336 Chapter 10 Routing Protocols 341 Routing Protocol Basics 343 Distance- Vector Routing Protocols 347 Link- State Routing Protocols 357 High Available Routes 362 Advanced IPv6 Concepts 363 Tunneling 366 Dual Stack 369 IPv6 Routing Protocols 370 RIPng 370 EIGRPv 6 371 OSPFv 3 371 Summary 371 Exam Essentials 372 Written Lab 372 Review Questions 375 Chapter 11 Switching and Virtual LANs 379 Networking Before Layer 2 Switching 381 Switching Services 385 Spanning Tree Protocol 392 Virtual LANs 397 VLAN Trunking Protocol 409 Advanced Features of Switches 419 Summary 424 Exam Essentials 424 Written Lab 425 Review Questions 426 Chapter 12 Wireless Networking 431 Introduction to Wireless Technology 433 Cellular Technologies 436 The 802.11 Standards (Regulatory Impacts) 438 Comparing 802.11 Standards 445 Wireless Network Components 447 Site Survey 466 Providing Capacity 468 Multiple Floors 469 Location- Based WLAN 470 Site Survey Tools 470 Wireless Security 471 Summary 482 Exam Essentials 483 Written Lab 484 Review Questions 485 Chapter 13 Remote Network Access 489 Site- to- Site VPN 490 Client- to- Site VPN 491 Remote Desktop Connection 493 Virtual Network Computing 495 Connection Methods 496 Jump Box/Host 501 In- Band vs. Out- of- Band Management 502 Summary 502 Exam Essentials 502 Written Lab 503 Review Questions 504 Chapter 14 Using Statistics and Sensors to Ensure Network Availability 509 Performance Monitoring/Metrics/Sensors 511 SNMP 518 Application Programming Interface Integration 523 Protocol Analyzer/Packet Capture 524 Flow Data 525 Log Aggregation 526 Summary 532 Exam Essentials 532 Written Lab 532 Review Questions 534 Chapter 15 Organizational Documents and Policies 537 Plans and Procedures 539 Hardening and Security Policies 545 Common Documentation 554 IP Address Management 566 Common Agreements 566 Summary 568 Exam Essentials 568 Written Lab 568 Review Questions 570 Chapter 16 High Availability and Disaster Recovery 575 Load Balancing 576 Multipathing 577 Network Interface Card (NIC) Teaming 578 Redundant Hardware/Clusters 579 Facilities and Infrastructure Support 587 Redundancy and High Availability Concepts 591 Backups 600 Testing 602 Summary 603 Exam Essentials 603 Written Lab 604 Review Questions 605 Chapter 17 Data Center Architecture and Cloud Concepts 609 Cloud Computing 611 Infrastructure as Code 625 Software- Defined Networking 628 Virtual Extensible Local Area Network 633 Zero Trust Architecture 633 Secure Access Secure Edge/Security Service Edge 634 Summary 635 Exam Essentials 636 Written Lab 636 Review Questions 638 Chapter 18 Network Troubleshooting Methodology 643 Narrowing Down the Problem 646 Troubleshooting Steps 666 Troubleshooting Tips 695 Summary 699 Exam Essentials 699 Written Lab 700 Review Questions 701 Chapter 19 Network Software Tools and Commands 705 Software Tools 707 Using traceroute 712 Using ipconfig, ifconfig, and ip 715 Using the ifconfig Utility 720 Using the ip Utility 720 Using the iptables Utility 721 Using the ping Utility 722 Using the arp Utility 726 Using the nslookup Utility 729 Resolving Names with the Hosts File 731 Using the mtr Command (pathping) 732 Using the Nmap Utility 734 Using the route Command 735 Using tcpdump 747 Basic Networking Device Commands 748 Hardware Tools 762 Summary 766 Exam Essentials 767 Written Lab 768 Review Questions 769 Chapter 20 Network Security Concepts 775 Common Security Terminology 777 AAA Model 790 Regulatory Compliance 801 Summary 805 Exam Essentials 806 Written Lab 807 Review Questions 808 Chapter 21 Common Types of Attacks 813 Technology- Based Attacks 817 Human and Environmental 829 Hardening Security 831 Implementing Network Segmentation 837 Physical Security Concepts 847 Summary 851 Exam Essentials 852 Written Lab 853 Review Questions 854 Appendix A Answers to Written Labs 859 Chapter 1: Introduction to Networks 860 Chapter 2: The Open Systems Interconnection (OSI) Reference Model 860 Chapter 3: Networking Connectors and Wiring Standards 860 Chapter 4: The Current Ethernet Specifications 861 Chapter 5: Networking Devices 862 Chapter 6: Introduction to the Internet Protocol 862 Chapter 7: IP Addressing 863 Chapter 8: IP Subnetting, Troubleshooting IP, and Introduction to NAT 864 Chapter 9: Introduction to IP Routing 865 Chapter 10: Routing Protocols 865 Chapter 11: Switching and Virtual LANs 867 Chapter 12: Wireless Networking 867 Chapter 13: Remote Network Access 868 Chapter 14: Using Statistics and Sensors to Ensure Network Availability 868 Chapter 15: Organizational Documents and Policies 869 Chapter 16: High Availability and Disaster Recovery 870 Chapter 17: Data Center Architecture and Cloud Concepts 870 Chapter 18: Network Troubleshooting Methodology 871 Chapter 19: Network Software Tools and Commands 871 Chapter 20: Network Security Concepts 872 Chapter 21: Common Types of Attacks 872 Appendix B Answers to Review Questions 873 Chapter 1: Introduction to Networks 874 Chapter 2: The Open Systems Interconnection (OSI) Reference Model 876 Chapter 3: Networking Connectors and Wiring Standards 878 Chapter 4: The Current Ethernet Specifications 881 Chapter 5: Networking Devices 883 Chapter 6: Introduction to the Internet Protocol 885 Chapter 7: IP Addressing 888 Chapter 8: IP Subnetting, Troubleshooting IP, and Introduction to NAT 890 Chapter 9: Introduction to IP Routing 892 Chapter 10: Routing Protocols 895 Chapter 11: Switching and Virtual LANs 897 Chapter 12: Wireless Networking 900 Chapter 13: Remote Network Access 902 Chapter 14: Using Statistics and Sensors to Ensure Network Availability 905 Chapter 15: Organizational Documents and Policies 907 Chapter 16: High Availability and Disaster Recovery 910 Chapter 17: Data Center Architecture and Cloud Concepts 912 Chapter 18: Network Troubleshooting Methodology 915 Chapter 19: Network Software.