Mike Meyers' CompTIA Network+ Guide to Managing and Troubleshooting Networks, Sixth Edition (Exam N10-008)

by Scott Jernigan, Mike Meyers (Editor)

Overview

This fully updated four-color textbook is designed for classroom use and covers every topic on the latest version of the challenging CompTIA Network+ exam

Written by Mike Meyers, the leading CompTIA certification and training expert, this full-color resource prepares students for the CompTIA Network+ exam and puts you on the path to becoming an expert networking professional. Thoroughly revised for the current version of the CompTIA Network+ exam, the book contains helpful on-the-job advice, hands-on examples, chapter summaries, key terms quizzes, review questions, lab projects, and hundreds of photographs and illustrations.

Mike Meyers’ CompTIA Network+ Guide to Managing and Troubleshooting Networks, Sixth Edition (Exam N10-008) covers the latest concepts and technologies, including basic datacenter, cloud, and virtual networking concepts. Students will learn networking fundamentals and best practices, and networking fundamentals while following the path to becoming an effective networking professional. Special design elements throughout reinforce salient points while preparing you for exam day.

• Contains 100% coverage of every objective for CompTIA Network+ exam N10-008
• Online content includes 100 accurate practice questions, a self-assessment practice exam engine, videos and lab simulations from Mike Meyers, and on-the-job tools and utilities
• Written by CompTIA certification and training guru Mike Meyers
• Instructor materials and answer keys are available to adopting instructors through your McGraw Hill sales representative (answers are not printed in the book)
  
  
  

Product Details

ISBN-13:	9781264269037
Publisher:	McGraw Hill LLC
Publication date:	03/31/2022
Edition description:	6th ed.
Pages:	784
Sales rank:	204,582
Product dimensions:	8.30(w) x 10.80(h) x 1.20(d)

About the Author

Mike Meyers, A+, Network+, Security+, is the industry’s leading authority on A+ and Network+ certification. He is the president and founder of Total Seminars, LLC. Mike is the author of many books, including Mike Meyers’ Network+ Guide to Managing and Troubleshooting Networks.

Scott Jernigan is editor-in-chief for Total Seminars. He has edited and contributed to dozens of books on computer literacy, hardware, operating systems, networking, and certification. He is the author of Computer Literacy―Your Ticket to IC3 Certification and is the co-author of the bestselling CompTIA A+ Certification All-in-One Exam Guide, and the Mike Meyers’ A+ Guide to Managing and Troubleshooting PCs textbook (both with Mike Meyers). Jernigan has taught computer classes all over the United States, including stints at the United Nations in New York and the FBI Academy in Quantico.


Scott Jernigan (Houston, TX) is Editor in Chief for Total Seminars. Jernigan holds a Master of Arts degree in Medieval History, and after leaving academics, Jernigan began a career in IT, working as an instructor, editor, and writer. Mr. Jernigan has edited and contributed to dozens of books on computer literacy, hardware, operating systems, networking, and certification. His is the author of Computer Literacy—Your Ticket to IC3 Certification, and is the co-author of the bestselling CompTIA A+ Certification All-in-One Exam Guide, and the Mike Meyers’ A+ Guide to Managing and Troubleshooting PCs textbook (both with Mike Meyers). He has taught computer classes all over the United States, including stints at the United Nations in New York and the FBI Academy in Quantico.

Table of Contents

Preface xix

Introduction xx

Additional Resources For Teachers xxix

Chapter 1 Network Models 1

Historical/Conceptual 1

Working with Models 1

Biography of a Model 2

Network Models 2

The OSI Seven-Layer Model on a Simple Network 3

Welcome to MHTechEd! 4

Test Specific 4

Let's Get Physical-Network Hardware and Layers 1-2 4

Beyond the Single Wire-Network Software and Layers 3-7 14

The OSI Seven-Layer Model and Remote Work 23

Chapter 1 Review 26

Chapter 2 Cabling and Topology 30

Test Specific 31

Network Topologies 31

Bus and Ring 31

Star 32

Hybrid 32

Mesh 33

Parameters of a Topology 34

Cabling and Connectors 34

Copper Cabling and Connectors 35

Fiber-Optic Cabling and Connectors 39

Fire Ratings 41

Networking Industry Standards-IEEE 42

Chapter 2 Review 43

Chapter 3 Ethernet Basics 48

Historical/Conceptual 49

Ethernet 49

802.3 Standards 49

Test Specific 50

Ethernet Frames 50

Early Ethernet Standards 52

Bus Ethernet 52

10BASE-T 52

10BASE-FL 55

CSMA/CD 56

Enhancing and Extending Ethernet Networks 58

The Trouble with Hubs 58

Switches to the Rescue 58

Connecting Ethernet Segments 60

Troubleshooting Switches 62

Chapter 3 Review 64

Chapter 4 Ethernet Standards 68

Test Specific 69

100-Megabit Ethernet 69

100BASE-T 69

100BASE-FX 70

100BASE-SX 71

Full-Duplex Ethernet 71

Gigabit Ethernet 72

1000BASE-SX 73

1000BASE-LX 73

SFF Fiber Connectors 73

Mechanical Connection Variations 74

Implementing Multiple Types of Gigabit Ethernet 74

Ethernet Evolutions 75

10 Gigabit Ethernet 75

Chapter 4 Review 81

Chapter 5 Installing a Physical Network 86

Historical/Conceptual 87

Understanding Structured Cabling 87

Cable Basics-A Star Is Born 88

Test Specific 89

Structured Cable-Network Components 89

Structured Cable-Beyond the Star 97

Demarc 97

Installing Structured Cabling 99

Getting a Floor Plan 99

Mapping the Runs 100

Determining the Location of the Telecommunications Room 101

Pulling Cable 102

Making Connections 104

Testing the Cable Runs 107

NICs 114

Buying NICs 114

Link Lights 116

Diagnostics and Repair of Physical Cabling 117

Diagnosing Physical Problems 117

Check Your Lights 117

Check the NIC 118

Cable Testing 118

Problems in the Telecommunications Room 119

Toners 121

Chapter 5 Review 122

Chapter 6 TCP/IP Basics 128

Historical/Conceptual 129

Test Specific 129

The TCP/IP Protocol Suite 129

Network Layer Protocols 130

Transport Layer Protocols 131

Application Layer Protocols 132

IP and Ethernet 133

IP Addresses 135

IP Addresses in Action 140

Class IDs 145

CIDR and Subnetting 147

Subnetting 147

CIDR: Key Takeaways 153

IP Address Assignment 153

Static IP Addressing 154

Dynamic IP Addressing 156

Special IP Addresses 166

Chapter 6 Review 167

Chapter 7 Routing 172

Historical/Conceptual 173

How Routers Work 173

Test Specific 174

Routing Tables 174

Freedom from Layer 2 181

Network Address Translation 181

Dynamic Routing 186

Routing Metrics 186

Distance Vector and Path Vector 187

Link State 193

EIGRP 194

Dynamic Routing Makes the Internet 195

Route Redistribution and Administrative Distance 195

Working with Routers 195

Connecting to Routers 196

Basic Router Configuration 201

Router Problems 203

Chapter 7 Review 207

Chapter 8 TCP/IP Applications 212

Historical/Conceptual 213

Transport Layer and Network Layer Protocols 213

How People Communicate 213

Test Specific 214

TCP 214

UDP 214

ICMP 215

IGMP 216

The Power of Port Numbers 217

Registered Ports 219

Connection Status 221

Rules for Determining Good vs. Bad Communications 223

Common TCP/IP Applications 223

Telnet and SSH 224

E-mail 225

SQL 229

FTP 230

HTTP and HTTPS 231

TCP/IP Applications Chart 234

Beyond Network+ 234

Other Layer 7 Applications 234

Chapter 8 Review 236

Chapter 9 Network Naming 242

Historical/Conceptual 243

Before DNS 243

NetBIOS 243

Hosts 244

Test Specific 245

DNS 245

How DNS Works 245

Administering DNS Servers 254

Troubleshooting DNS on Clients 261

Diagnosing TCP/IP Network Issues 263

Chapter 9 Review 266

Chapter 10 Securing TCP/IP 270

Historical/Conceptual 271

Making TCP/IP Secure 271

Encryption 271

Integrity 276

Nonrepudiation 280

Test Specific 284

Authentication 284

Authorization 284

TCP/IP Security Standards 285

User Authentication Standards 285

Encryption Standards 291

Combining Authentication and Encryption 294

Secure TCP/IP Applications 296

HTTPS 296

Securing E-Mail Protocols 297

SCP 297

SFTP 297

SNMP 298

LDAP 299

NTP 299

Chapter 10 Review 300

Chapter 11 Switch Features 306

Test Specific 307

Switch Management 307

Access Management 308

Port Configuration 308

Port Security 309

Virtual LANs 310

Trunking 311

Configuring a VLAN-Capable Switch 311

Assigning VLANs and Tagging 312

VLAN Trunking Protocol 313

Inter-VLAN Routing 314

DHCP and VLANs 315

Voice VLANs 315

Private VLANs 316

Troubleshooting VLANs 316

Multilayer Switches 316

Load Balancing 317

QoS and Traffic Shaping 319

Port Bonding 320

Network Protection 320

Chapter 11 Review 326

Chapter 12 IPv6 332

Test Specific 333

IPv6 Concepts 333

IPv6 Addresses 333

Neighbor Discovery 338

IPv6 Implementations 339

Stateless Address Autoconfiguration (SLAAC) 339

Aggregation 342

IPv6 and DNS 345

Moving to IPv6 345

IPv4 and IPv6 345

Transition Mechanisms 346

Chapter 12 Review 348

Chapter 13 WAN Connectivity 352

Historical/Conceptual 353

WAN Technologies 353

SONET 353

Test Specific 354

Fiber Improvements 354

Private WANs 354

Last-Mile Technologies 357

DSL 358

Broadband Cable 360

Satellite 361

Fiber 361

Cellular WAN 362

Which Connection? 364

Remote Access 364

Remote Terminal 365

Virtual Private Networks 367

WAN Troubleshooting Scenarios 372

Loss of Internet Connectivity 372

Interface Errors 372

DNS Issues 373

Interference 373

Chapter 13 Review 375

Chapter 14 Wireless Networking 380

Historical/Conceptual 381

Test Specific 381

Wi-Fi Standards 381

802.11 381

802.11b 388

802.11a 388

802.11g 389

802.11n 389

802.11ac 390

802.11ax 390

WPS 391

Wi-Fi Security 391

Enterprise Wireless 397

Implementing Wi-Fi 400

Performing a Site Survey 400

Installing the Client 402

Setting Up an Ad Hoc Network 403

Setting Up an Infrastructure Network 404

Extending the Network 411

Verifying the Installation 412

Troubleshooting Wi-Fi 412

No Connection 412

Slow Connection 414

Weird Connection 417

Chapter 14 Review 420

Chapter 15 Virtualization and Cloud Computing 426

Test Specific 427

Virtualization and Cloud Computing Concepts 427

Virtualization 427

Cloud Computing 432

Infrastructure as Code 437

Virtual Networking 439

Putting Network Virtualization and Cloud Computing to Work 444

Setting Up Rocket.Chat in a Local Hypervisor 444

Managing Cloud Resources 447

Setting Up Rocket.Chat on IaaS 450

Desktop as a Service 452

Interconnecting Local and Cloud Resources 454

Chapter 15 Review 456

Chapter 16 Data Centers 462

Test Specific 463

Classic Data Center Architecture and Design 463

Tiers 464

Traffic Flows 465

Data Storage 466

Where Is the Classic Data Center? 468

The Modern Data Center 468

Virtualization 468

Software-Defined Networking 469

Spine and Leaf 469

High Availability in the Data Center 469

Load Balancing 470

Redundancy 470

Facilities and Infrastructure Support 471

Documenting the Data Center 472

Network Diagrams 473

Baseline Configurations 476

Assessments 476

Chapter 16 Review 478

Chapter 17 Integrating Network Devices 484

Test Specific 485

Internet of Things 485

IoT Home Automation 486

IoT Home Security 487

IoT Communications Technologies 487

Hardening IoT Devices 489

Unified Communication 489

It Started with VoIP 489

Unified Communication Features 490

VTC and Medianets 491

UCaaS 493

ICS 493

DCS 494

PLC 496

SCADA 496

Chapter 17 Review 498

Chapter 18 Network Operations 502

Test Specific 503

Risk Management 503

Hardening and Security Policies 503

Change Management 507

Patching and Updates 509

Training 510

Common Agreements 511

Security Preparedness 512

Contingency Planning 517

Incident Response 517

Disaster Recovery 518

Business Continuity 519

Forensics 520

Chapter 18 Review 523

Chapter 19 Protecting Your Network 528

Test Specific 529

Security Concepts 529

CIA 529

Zero Trust 530

Defense in Depth 530

Separation of Duties 531

Network Threats 531

Threat Terminology 532

Spoofing 532

Packet/Protocol Abuse 533

Zero-Day Attacks 534

Rogue Devices 534

ARP Cache Poisoning 535

Denial of Service 537

On-Path Attack 539

Session Hijacking 539

Password Attacks 540

Physical/Local Access 540

Malware 543

Social Engineering 545

Common Vulnerabilities 546

Unnecessary Running Services 547

Unpatched/Legacy Systems 548

Unencrypted Channels 548

Cleartext Credentials 548

RF Emanation 549

Hardening Your Network 549

Physical Security 549

Network Security 553

Device Hardening 559

Host Security 560

Firewalls 563

Types of Firewalls 563

Implementing and Configuring Firewalls 564

Troubleshooting Firewalls 567

Chapter 19 Review 569

Chapter 20 Network Monitoring 576

Test Specific 577

SNMP 577

Monitoring Tools 579

Packet Sniffers 580

Protocol Analyzers 580

Sensors 583

Interface Monitors 584

Performance Monitors 585

Putting It All Together 587

Scenario: Monitoring and Managing 587

SIEM 591

Chapter 20 Review 592

Chapter 21 Network Troubleshooting 596

Test Specific 597

Troubleshooting Tools 597

Hardware Tools 597

Software Tools 600

The Troubleshooting Process 609

Identify the Problem 610

Establish a Theory of Probable Cause 612

Test the Theory to Determine the Cause 613

Establish a Plan of Action and Identify Potential Effects 614

Implement the Solution or Escalate as Necessary 614

Verify Full System Functionality and Implement Preventive Measures 615

Document Findings, Actions, Outcomes, and Lessons Learned 615

Resolving Common Network Service Issues 616

"We Can't Access Our Web Server in Istanbul!" 616

Network Troubleshooting Considerations 617

Hands-On Problems 619

Nearby Problems 621

Far-flung Problems 627

Network Performance Issues 629

Troubleshooting Is Fun! 630

Chapter 21 Review 631

Appendix A Exam Objective Map 638

Exam N10-008 638

Appendix B Create Your Study Plan 655

Review Your Overall Score 655

Review Your Score by CompTIA Network+ Exam Domain 655

Appendix C About the Online Content 656

System Requirements 656

Your Total Seminars Training Hub Account 656

Privacy Notice 657

Single User License Terms and Conditions 657

TotalTester Online 658

Pre-Assessment 659

Create Your Study Plan 659

Playing the CompTIA Network+ Introduction Video 659

Mike's CompTIA Network+ Video Training Sample 659

TotalSims Sample for CompTIA Networks+ 659

Mike's Cool Tools 660

Technical Support 660

Glossary 661

Index 715