ABOUT THE AUTHORJon Buhagiar, Network+, A+, CCNA, MCSA, MCSE, BS/ITM, is Supervisor of Network Operations at Pittsburgh Technical College. In addition to teaching, he has been creating course content for the past 20 years. Some of his more recent work can be found on YouTube http://www.youtube.com/networkedminds.

• Introduction xviiChapter 1 Domain 1.0: Networking Fundamentals 11.1 Compare and contrast the Open Systems Interconnection (OSI) model layers and encapsulation concepts 11OSI Model 12Protocol Data Units 21Data Encapsulation and Decapsulation 22Exam Essentials 261.2 Explain the characteristics of network topologies and network types 28Wired Topologies 28Types 33Service- Related Entry Point 39Virtualization 40Virtual Networking Components 40Service Type 43Service Delivery 48Exam Essentials 501.3 Summarize the types of cables and connectors and explain which is the appropriate type for a solution 51Media Types 51Connector Types 55Transceivers 60Media Converters 62Characteristics of Fiber Transceivers 63Termination Points 65Copper Cabling Standards 70Copper Termination Standards 73Ethernet Deployment Standards 76Exam Essentials 781.4 Given a scenario, configure a subnet and use appropriate IP addressing schemes 80Private vs. Public 80Nat/pat 81IPv4 Concepts 84IPv6 Concepts 88Address Assignments 93Subnetting 99Virtual IP (VIP) 107Exam Essentials 1081.5 Explain common ports and protocols, their application, and encrypted alternatives 110Protocols and Ports 110IP Protocol Types 117Connection- Oriented vs. Connectionless 121Exam Essentials 1221.6 Explain the use and purpose of network services 123Dns 123DHCP Service 132Ntp 137Exam Essentials 1371.7 Explain basic corporate and datacenter network architecture 139Three- Tiered Model 139Software- Defined Networking 140Spine and Leaf 142Traffic Flows 143Host Locations 144Network Storage Types 145Connection Type 147Exam Essentials 1501.8 Summarize cloud concepts and connectivity options 151Characteristics of a Cloud 151Cloud Delivery Models 152Types of Services 155Infrastructure as Code 157Connectivity Methods 160Multitenancy 161Elasticity 161Scalability 162Security Implications/Considerations 162Relationship Between Local and Cloud Resources 163Exam Essentials 163Review Questions 165Chapter 2 Domain 2.0: Network Implementations 1692.1 Compare and contrast various devices, their features, and their appropriate placement on the network 173Network Devices 173Exam Essentials 2032.2 Compare and contrast routing technologies and bandwidth management concepts 204Routing 204Bandwidth Management 212Exam Essentials 2152.3 Given a scenario, configure and deploy common Ethernet switching features 216Characteristics of Ethernet and IP Communications 216Basic Switch Functions 220Segmentation and Interface Properties 227Switching Features 231Exam Essentials 2342.4 Given a scenario, install and configure the appropriate wireless standards and technologies 235802.11 Standards 235Frequencies 238Wireless Considerations 239Wireless Modes of Operation 245Wireless Security 248Cellular 252Exam Essentials 254Review Questions 256Chapter 3 Domain 3.0: Network Operations 2613.1 Given a scenario, use the appropriate statistics and sensors to ensure network availability 265Performance Metrics 265Snmp 270Network Device Logs 274Interface Statistics/Status 279Interface Errors or Alerts 286Environmental Factors and Sensors 289Performance Baselines 291NetFlow Data 292Uptime/Downtime 293Exam Essentials 2943.2 Explain the purpose of organizational documents and policies 296Plans and Procedures 296Hardening and Security Policies 303Common Documentation 307Common Agreements 315Exam Essentials 3163.3 Explain high availability and disaster recovery concepts and summarize which is the best solution 318Load Balancing 318Multipathing 318Network Interface Card (NIC) Teaming 320Redundant Hardware/Clusters 320Facilities and Infrastructure Support 326Redundancy and High Availability (HA) Concepts 330Backups 334Exam Essentials 336Review Questions 338Chapter 4 Domain 4.0: Network Security 3434.1 Explain common security concepts 348Confidentiality, Integrity, Availability (CIA) 348Threats 349Vulnerabilities 350Exploits 351Least Privilege 351Role- Based Access 352Zero Trust 352Defense in Depth 353Authentication Methods 357Security Assessments 364Security Information and Event Management (SIEM) 366Exam Essentials 3664.2 Compare and contrast common types of attacks 368Technology- Based 368Human and Environmental 378Exam Essentials 3794.3 Given a scenario, apply network hardening techniques 381Best Practices 381Wireless Security 390IOT Considerations 395Exam Essentials 3964.4 Compare and contrast remote access methods and security implications 397Vpn 397Remote Desktop Connection 400Remote Desktop Gateway 401Ssh 401Virtual Network Computing (VNC) 402Virtual Desktop 402Authentication and Authorization Considerations 403In- Band vs. Out- of- Band Management 403Exam Essentials 4054.5 Explain the importance of physical security 406Detection Methods 407Prevention Methods 410Asset Disposal 413Exam Essentials 415Review Questions 416Chapter 5 Domain 5.0: Network Troubleshooting 4215.1 Explain the network troubleshooting methodology 427Identify the Problem 428Establish a Theory of Probable Cause 430Test the Theory to Determine the Cause 431Establish a Plan of Action to Resolve the Problem and Identify Potential Effects 432Implement the Solution or Escalate as Necessary 432Verify Full System Functionality and, If Applicable, Implement Preventive Measures 433Document Findings, Actions, Outcomes, and Lessons Learned 433Exam Essentials 4335.2 Given a scenario, troubleshoot common cable connectivity issues and select the appropriate tools 434Specifications and Limitations 434Cable Considerations 435Cable Application 437Common Issues 439Common Tools 445Exam Essentials 4565.3 Given a scenario, use the appropriate network software tools and commands 458Software Tools 458Command- Line Tools 466Basic Network Platform Commands 481Exam Essentials 4855.4 Given a scenario, troubleshoot common wireless connectivity issues 486Specifications and Limitations 486Considerations 489Common Issues 493Exam Essentials 4985.5 Given a scenario, troubleshoot general networking issues 499Considerations 499Common Issues 501Exam Essentials 530Review Questions 532Appendix Answers to Review Questions 537Chapter 1: Domain 1.0: Networking Fundamentals 538Chapter 2: Domain 2.0: Network Implementations 541Chapter 3: Domain 3.0: Network Operations 544Chapter 4: Domain 4.0: Network Security 547Chapter 5: Domain 5.0: Network Troubleshooting 550Index 553

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