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<p>Introduction xxxv</p> <p> Assessment Test  xlvi</p> <p><b>Chapter 1 Introduction to Networks 1</b></p> <p>First Things First: What’s a Network? 2</p> <p>Physical Network Topologies 14</p> <p>Topology Selection, Backbones, and Segments 22</p> <p>Summary 29</p> <p>Exam Essentials 29</p> <p>Written Lab 30</p> <p>Review Questions 31</p> <p><b>Chapter 2 The Open Systems Interconnection (OSI) Reference Model 35</b></p> <p>Internetworking Models 36</p> <p>Introduction to Encapsulation 53</p> <p>Modulation Techniques 54</p> <p>Summary 55</p> <p>Exam Essentials 56</p> <p>Written Lab 56</p> <p>Review Questions 57</p> <p><b>Chapter 3 Networking Connectors and Wiring Standards 61</b></p> <p>Physical Media 63</p> <p>Cable Properties 82</p> <p>Wiring Standards 84</p> <p>Installing Wiring Distributions 92</p> <p>Summary 94</p> <p>Exam Essentials 95</p> <p>Written Lab 95</p> <p>Review Questions 97</p> <p><b>Chapter 4 The Current Ethernet Specifications 101</b></p> <p>Network Basics 102</p> <p>Ethernet Basics 104</p> <p>Ethernet at the Data Link Layer 110</p> <p>Ethernet at the Physical Layer 117</p> <p>Ethernet over Other Standards (IEEE 1905.1- 2013) 123</p> <p>Summary 127</p> <p>Exam Essentials 127</p> <p>Written Lab 127</p> <p>Review Questions 129</p> <p><b>Chapter 5 Networking Devices 133</b></p> <p>Common Network Connectivity Devices 135</p> <p>Other Specialized Devices 157</p> <p>Networked Devices 174</p> <p>Planning and Implementing a Basic SOHO Network Using Network Segmentation 175</p> <p>Summary 186</p> <p>Exam Essentials 186</p> <p>Written Lab 187</p> <p>Review Questions 189</p> <p><b>Chapter 6 Introduction to the Internet Protocol 193</b></p> <p>Introducing TCP/IP 195</p> <p>Data Encapsulation 230</p> <p>Summary 234</p> <p>Exam Essentials 235</p> <p>Written Lab 236</p> <p>Review Questions 237</p> <p><b>Chapter 7 IP Addressing 241</b></p> <p>IP Terminology 243</p> <p>The Hierarchical IP Addressing Scheme 244</p> <p>IPv4 Address Types 251</p> <p>Internet Protocol Version 6 (IPv6) 253</p> <p>Summary 263</p> <p>Exam Essentials 264</p> <p>Written Labs 265</p> <p>Review Questions 267</p> <p><b>Chapter 8 IP Subnetting, Troubleshooting IP, and Introduction to NAT 271</b></p> <p>Subnetting Basics 273</p> <p>Troubleshooting IP Addressing 296</p> <p>Introduction to Network Address Translation (NAT) 304</p> <p>Summary 309</p> <p>Exam Essentials 309</p> <p>Written Lab 310</p> <p>Review Questions 311</p> <p><b>Chapter 9 Introduction to IP Routing 319</b></p> <p>Routing Basics 320</p> <p>The IP Routing Process 323</p> <p>Testing Your IP Routing Understanding 329</p> <p>Static and Dynamic Routing 331</p> <p>Summary 334</p> <p>Exam Essentials 334</p> <p>Written Lab 335</p> <p>Review Questions 336</p> <p><b>Chapter 10 Routing Protocols 341</b></p> <p>Routing Protocol Basics 343</p> <p>Distance- Vector Routing Protocols 347</p> <p>Link- State Routing Protocols 357</p> <p>High Available Routes 362</p> <p>Advanced IPv6 Concepts 363</p> <p>Tunneling 366</p> <p>Dual Stack 369</p> <p>IPv6 Routing Protocols 370</p> <p>RIPng 370</p> <p>EIGRPv 6 371</p> <p>OSPFv 3 371</p> <p>Summary 371</p> <p>Exam Essentials 372</p> <p>Written Lab 372</p> <p>Review Questions 375</p> <p><b>Chapter 11 Switching and Virtual LANs 379</b></p> <p>Networking Before Layer 2 Switching 381</p> <p>Switching Services 385</p> <p>Spanning Tree Protocol 392</p> <p>Virtual LANs 397</p> <p>VLAN Trunking Protocol 409</p> <p>Advanced Features of Switches 419</p> <p>Summary 424</p> <p>Exam Essentials 424</p> <p>Written Lab 425</p> <p>Review Questions 426</p> <p><b>Chapter 12 Wireless Networking 431</b></p> <p>Introduction to Wireless Technology 433</p> <p>Cellular Technologies 436</p> <p>The 802.11 Standards (Regulatory Impacts) 438</p> <p>Comparing 802.11 Standards 445</p> <p>Wireless Network Components 447</p> <p>Site Survey 466</p> <p>Providing Capacity 468</p> <p>Multiple Floors 469</p> <p>Location- Based WLAN 470</p> <p>Site Survey Tools 470</p> <p>Wireless Security 471</p> <p>Summary 482</p> <p>Exam Essentials 483</p> <p>Written Lab 484</p> <p>Review Questions 485</p> <p><b>Chapter 13 Remote Network Access 489</b></p> <p>Site- to- Site VPN 490</p> <p>Client- to- Site VPN 491</p> <p>Remote Desktop Connection 493</p> <p>Virtual Network Computing 495</p> <p>Connection Methods 496</p> <p>Jump Box/Host 501</p> <p>In- Band vs. Out- of- Band Management 502</p> <p>Summary 502</p> <p>Exam Essentials 502</p> <p>Written Lab 503</p> <p>Review Questions 504</p> <p><b>Chapter 14 Using Statistics and Sensors to Ensure Network Availability 509</b></p> <p>Performance Monitoring/Metrics/Sensors 511</p> <p>SNMP 518</p> <p>Application Programming Interface Integration 523</p> <p>Protocol Analyzer/Packet Capture 524</p> <p>Flow Data 525</p> <p>Log Aggregation 526</p> <p>Summary 532</p> <p>Exam Essentials 532</p> <p>Written Lab 532</p> <p>Review Questions 534</p> <p><b>Chapter 15 Organizational Documents and Policies 537</b></p> <p>Plans and Procedures 539</p> <p>Hardening and Security Policies 545</p> <p>Common Documentation 554</p> <p>IP Address Management 566</p> <p>Common Agreements 566</p> <p>Summary 568</p> <p>Exam Essentials 568</p> <p>Written Lab 568</p> <p>Review Questions 570</p> <p><b>Chapter 16 High Availability and Disaster Recovery 575</b></p> <p>Load Balancing 576</p> <p>Multipathing 577</p> <p>Network Interface Card (NIC) Teaming 578</p> <p>Redundant Hardware/Clusters 579</p> <p>Facilities and Infrastructure Support 587</p> <p>Redundancy and High Availability Concepts 591</p> <p>Backups 600</p> <p>Testing 602</p> <p>Summary 603</p> <p>Exam Essentials 603</p> <p>Written Lab 604</p> <p>Review Questions 605</p> <p><b>Chapter 17 Data Center Architecture and Cloud Concepts 609</b></p> <p>Cloud Computing 611</p> <p>Infrastructure as Code 625</p> <p>Software- Defined Networking 628</p> <p>Virtual Extensible Local Area Network 633</p> <p>Zero Trust Architecture 633</p> <p>Secure Access Secure Edge/Security Service Edge 634</p> <p>Summary 635</p> <p>Exam Essentials 636</p> <p>Written Lab 636</p> <p>Review Questions 638</p> <p><b>Chapter 18 Network Troubleshooting Methodology 643</b></p> <p>Narrowing Down the Problem 646</p> <p>Troubleshooting Steps 666</p> <p>Troubleshooting Tips 695</p> <p>Summary 699</p> <p>Exam Essentials 699</p> <p>Written Lab 700</p> <p>Review Questions 701</p> <p><b>Chapter 19 Network Software Tools and Commands 705</b></p> <p>Software Tools 707</p> <p>Using traceroute 712</p> <p>Using ipconfig, ifconfig, and ip 715</p> <p>Using the ifconfig Utility 720</p> <p>Using the ip Utility 720</p> <p>Using the iptables Utility 721</p> <p>Using the ping Utility 722</p> <p>Using the arp Utility 726</p> <p>Using the nslookup Utility 729</p> <p>Resolving Names with the Hosts File 731</p> <p>Using the mtr Command (pathping) 732</p> <p>Using the Nmap Utility 734</p> <p>Using the route Command 735</p> <p>Using tcpdump 747</p> <p>Basic Networking Device Commands 748</p> <p>Hardware Tools 762</p> <p>Summary 766</p> <p>Exam Essentials 767</p> <p>Written Lab 768</p> <p>Review Questions 769</p> <p><b>Chapter 20 Network Security Concepts 775</b></p> <p>Common Security Terminology 777</p> <p>AAA Model 790</p> <p>Regulatory Compliance 801</p> <p>Summary 805</p> <p>Exam Essentials 806</p> <p>Written Lab 807</p> <p>Review Questions 808</p> <p><b>Chapter 21 Common Types of Attacks 813</b></p> <p>Technology- Based Attacks 817</p> <p>Human and Environmental 829</p> <p>Hardening Security 831</p> <p>Implementing Network Segmentation 837</p> <p>Physical Security Concepts 847</p> <p>Summary 851</p> <p>Exam Essentials 852</p> <p>Written Lab 853</p> <p>Review Questions 854</p> <p><b>Appendix A Answers to Written Labs 859</b></p> <p>Chapter 1: Introduction to Networks 860</p> <p>Chapter 2: The Open Systems Interconnection (OSI) Reference Model 860</p> <p>Chapter 3: Networking Connectors and Wiring Standards 860</p> <p>Chapter 4: The Current Ethernet Specifications 861</p> <p>Chapter 5: Networking Devices 862</p> <p>Chapter 6: Introduction to the Internet Protocol 862</p> <p>Chapter 7: IP Addressing 863</p> <p>Chapter 8: IP Subnetting, Troubleshooting IP, and Introduction to NAT 864</p> <p>Chapter 9: Introduction to IP Routing 865</p> <p>Chapter 10: Routing Protocols 865</p> <p>Chapter 11: Switching and Virtual LANs 867</p> <p>Chapter 12: Wireless Networking 867</p> <p>Chapter 13: Remote Network Access 868</p> <p>Chapter 14: Using Statistics and Sensors to Ensure Network Availability 868</p> <p>Chapter 15: Organizational Documents and Policies 869</p> <p>Chapter 16: High Availability and Disaster Recovery 870</p> <p>Chapter 17: Data Center Architecture and Cloud Concepts 870</p> <p>Chapter 18: Network Troubleshooting Methodology 871</p> <p>Chapter 19: Network Software Tools and Commands 871</p> <p>Chapter 20: Network Security Concepts 872</p> <p>Chapter 21: Common Types of Attacks 872</p> <p><b>Appendix B Answers to Review Questions 873</b></p> <p>Chapter 1: Introduction to Networks 874</p> <p>Chapter 2: The Open Systems Interconnection (OSI) Reference Model 876</p> <p>Chapter 3: Networking Connectors and Wiring Standards 878</p> <p>Chapter 4: The Current Ethernet Specifications 881</p> <p>Chapter 5: Networking Devices 883</p> <p>Chapter 6: Introduction to the Internet Protocol 885</p> <p>Chapter 7: IP Addressing 888</p> <p>Chapter 8: IP Subnetting, Troubleshooting IP, and Introduction to NAT 890</p> <p>Chapter 9: Introduction to IP Routing 892</p> <p>Chapter 10: Routing Protocols 895</p> <p>Chapter 11: Switching and Virtual LANs 897</p> <p>Chapter 12: Wireless Networking 900</p> <p>Chapter 13: Remote Network Access 902</p> <p>Chapter 14: Using Statistics and Sensors to Ensure Network Availability 905</p> <p>Chapter 15: Organizational Documents and Policies 907</p> <p>Chapter 16: High Availability and Disaster Recovery 910</p> <p>Chapter 17: Data Center Architecture and Cloud Concepts 912</p> <p>Chapter 18: Network Troubleshooting Methodology 915</p> <p>Chapter 19: Network Software Tools and Commands 917</p> <p>Chapter 20: Network Security Concepts 920</p> <p>Chapter 21: Common Types of Attacks 922</p> <p><b>Appendix C Subnetting Class A 927</b></p> <p>Subnetting Practice Examples: Class A Addresses 928</p> <p>Subnetting in Your Head: Class A Addresses 930</p> <p>Written Lab C. 1 931</p> <p>Written Lab C. 2 932</p> <p>Answers to Written Lab C. 1 932</p> <p>Answers to Written Lab C. 2 933</p> <p>Index 935</p>

<p> <B>ABOUT THE AUTHORS </B> <p><b>Todd Lammle, </b> Network+, CCSI, CCNA, CCNP, is <i>the </i>networking authority. Todd is President of GlobalNet System Solutions, Inc., a networking integration and training firm, and is the bestselling author of numerous titles, including the popular <i>CompTIA Network+ Study Guide. </i>Todd has over 900,000 copies of his books in print. He can be reached through his website at www.lammle.com. <p><b>Jon Buhagiar, </b> Network+, A+, CCNA, is Supervisor of Network Operations at Pittsburgh Technical Institute. In addition to teaching, he has been creating course content for almost 20 years.

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