Comptia Network+ Guide To Networks, 9th Edition PDF by Jill West

By

Comptia Network+ Guide To Networks, Ninth Edition

By Jill West

Comptia Network+ Guide To Networks, 9th Edition PDF by Jill West

Table of Contents

Preface_ix

Module 1

Introduction to Networking 1

Network Models 2

Peer-to-Peer Network Model 3

Client-Server Network Model 5

Client-Server Applications 7

Network Services and Their Protocols 7

Network Hardware 10

LANs and Their Hardware 11

MANs and WANs 16

The Seven-Layer OSI Model 18

Layer 7: Application Layer 20

Layer 6: Presentation Layer 20

Layer 5: Session Layer 20

Layer 4: Transport Layer 20

Layer 3: Network Layer 21

Layer 2: Data Link Layer 21

Layer 1: Physical Layer 22

Protocol Data Unit or PDU 22

Summary of How the Layers Work

Together 22

Safety Procedures and Policies 25

Emergency Procedures 25

Safety Precautions 26

Troubleshooting Network Problems 29

Module Summary_33

Key Terms_36

Review Questi ons_36

Hands-On Projects_38

Module 2

Infrastructure and

Documentation 53

Components of Structured Cabling 54

From the Demarc to a Workstation 55

Cabling 62

Monitoring the Environment

and Security 65

Network Documentation 67

Network Diagrams 67

Operating Procedures 74

Inventory Management 76

Labeling and Naming Conventions 77

Business Documents 78

Change Management 80

Software and Hardware Changes 80

Change Management Documentation 82

Module Summary_85

Key Terms_86

Review Questions_87

Hands-On Projects_88

Module 3

Addressing 107

Addressing Overview 108

MAC Addresses 109

IP Addresses 112

IPv4 Addresses 114

IPv6 Addresses 121

Types of IPv6 Addresses 122

Ports and Sockets 126

Domain Names and DNS_130

Namespace Databases 131

Name Servers 131

Resource Records in a DNS Database 133

DNS Server Software 135

Troubleshooting Address Problems 137

Troubleshooting Tools 137

Common Network Issues 147

Module Summary_151

Key Terms_154

Review Questions_155

Hands-On Projects_156

Module 4

Protocols 167

TCP/IP Core Protocols 168

TCP (Transmission Control Protocol) 169

UDP (User Datagram Protocol) 174

IP (Internet Protocol) 175

ICMP (Internet Control Message Protocol) 180

ARP (Address Resolution Protocol) on IPv4

Networks 181

NDP (Neighbor Discovery Protocol) 182

Ethernet 183

Encryption Protocols 186

Key Encryption 187

IPsec (Internet Protocol Security) 188

SSL (Secure Sockets Layer) and TLS

(Transport Layer Security) 189

Remote Access Protocols 192

Remote File Access 194

Terminal Emulation 194

VPNs (Virtual Private Networks) 199

Remote Access Policies 202

Troubleshooting Network Issues 204

Troubleshooting Tools 204

Solving Common Network Problems 208

Module Summary 211

Key Terms_214

Review Questi ons_215

Hands-On Projects_216

Module 5

Cabling 231

Transmission Basics 232

Frequency, Bandwidth, and Throughput 232

Transmission Flaws 235

Duplex, Half-Duplex, and Simplex 237

Multiplexing 238

Copper Cable 240

Coaxial Cable and Twinaxial Cable 240

Twisted-Pair Cable 243

STP (Shielded Twisted Pair) 245

UTP (Unshielded Twisted Pair) 247

Comparing STP and UTP 247

Cable Pinouts 248

PoE (Power over Ethernet) 254

Ethernet Standards for Twisted-Pair Cable 256

Fiber-Optic Cable 258

SMF (Single Mode Fiber) 260

MMF (Multimode Fiber) 261

Fiber Connectors 261

Media Converters 263

Fiber Transceivers 264

Ethernet Standards for Fiber-Optic Cable 266

Common Fiber-Cable Problems 267

Cable Troubleshooting Tools 268

Toner and Probe Kit 269

Multimeter 270

Cable Continuity Tester 271

Cable Performance Tester 273

OPM (Optical Power Meter) 274

Module Summary_275

Key Terms_278

Review Questi ons_279

Hands-On Projects_280

Module 6

Wireless Networking 295

Characteristics of Wireless Transmissions 296

The Wireless Spectrum 296

Channel Management 300

Antennas 301

Signal Propagation 303

802.11 WLAN Standards 306

802.11 Innovations 308

Access Method 310

Association and Wireless Topologies 311

IEEE 802.11 Frames 314

Implementing a Wi-Fi Network 316

Determine the Design 316

Configure Wi-Fi Connectivity Devices 321

Configure Wi-Fi Clients 322

Wi-Fi Network Security 325

WPA (Wi-Fi Protected Access) 326

WPA2 (Wi-Fi Protected Access, Version 2) 326

Personal and Enterprise 327

Other Security Configurations 329

Security Threats to Wi-Fi Networks 331

Troubleshooting Wi-Fi Networks 334

Wi-Fi Network Tools 334

Avoid Pitfalls 335

Module Summary_340

Key Terms_342

Review Questi ons_343

Hands-On Projects_344

Module 7

Network Architecture 357

Physical Architecture 359

Managed Switches 360

Switch Path Management 360

Switch Port Security 363

Hierarchical Design 363

Software-Defined Networking (SDN) 367

Storage Area Network (SAN) 370

Virtual Architecture 374

Network Connection Types 376

Pros and Cons of Virtualization 383

NFV (Network Functions Virtualization) 385

Cloud Architecture 386

Cloud Service Models 388

Cloud Deployment Models 390

Orchestration and Automation 391

Connectivity and Security 392

Network Availability 394

Fault Tolerance 395

Module Summary_402

Key Terms_404

Review Questi ons_404

Hands-On Projects_406

Module 8

Segmentation 423

Network Segmentation 424

Subnet Masks 426

How Subnet Masks Work 428

Calculating Subnets 431

IPv4 Subnet Calculation in Binary 432

IPv4 Subnet Calculations Using

Formulas 434

Subnet Mask Tables 437

Subnetting Questions on Exams 437

Implementing Subnets on a Network 439

Variable Length Subnet Mask (VLSM) 442

Subnets in IPv6 444

Virtual LANs (VLANs) 447

Switch Port Configuration 448

VLAN Trunks 451

VLANs and Subnets 452

Types of VLANs 453

View Configured VLANs 455

Dynamic VLAN Assignment 456

Troubleshoot and Secure VLANs 456

Module Summary_458

Key Terms_460

Review Questi ons_460

Hands-On Projects_461

Module 9

Wide Area Networking 481

WAN Essentials 482

Entry Point Equipment 483

Routing Protocols 485

Routing Tables 487

Routing Path Types 489

route 489

Routing Metrics 490

Routing Protocols to Determine Best Paths 490

Interior and Exterior Gateway Protocols 491

Routing Redundancy 493

WAN Connectivity 495

DSL (Digital Subscriber Line) 498

Cable Broadband 500

Fiber 503

Leased Lines 504

MPLS (Multiprotocol Label Switching) 505

Cloud Connectivity Options 507

Software-defined WAN (SD-WAN) 508

Wireless WANs 511

Cellular 511

Satellite 515

Troubleshooting Connections 517

Internet Connectivity Issues 517

Interface Problems 517

Routing Issues 520

Module Summary_524

Key Terms_527

Review Questi ons_527

Hands-On Projects_528

Module 10

Risk Management_541

Security Risks 542

People Risks 545

Technology Risks 548

Malware Risks 552

Risk Assessment and Management 557

Attack Simulations 558

Red Team–Blue Team Exercise 559

Scanning Tools 560

Honeypots and Honeynets 561

Physical Security 562

Prevention Methods 563

Detection Methods 566

Device Hardening 569

Updates and Security Patches 569

Administrative Credentials 571

Services and Protocols 573

Passwords 575

Anti-Malware Software 578

Asset Disposal 579

Security Policies for Users 580

Security Policy Goals 581

BYOD (Bring Your Own Device) 582

AUP (Acceptable Use Policy) 582

NDA (Non-Disclosure Agreement) 584

Password Policy 584

Privileged User Agreement 587

Anti-Malware Policy 587

Module Summary_589

Key Terms_591

Review Questions_592

Hands-On Projects_593

Module 11

Security in Network Design 607

Network Hardening by Design 608

Router and Switch Security Configurations 608

Switch Security Configurations 611

Network Security Technologies 615

Proxy Servers 615

Firewalls 617

IDS (Intrusion Detection System) 624

IPS (Intrusion Prevention System) 627

Cloud Security Technologies 627

Authentication, Authorization, and

Accounting (AAA) 629

Authentication 630

Authorization 634

Accounting 634

Authentication Technologies 637

Directory Services 638

Kerberos 639

SSO (Single Sign-On) 642

RADIUS (Remote Authentication Dial-In

User Service) 643

TACACS1 (Terminal Access Controller Access

Control System Plus) 644

Module Summary_646

Key Terms_648

Review Questi ons_649

Hands-On Projects_650

Module 12

Performance and Recovery 667

Collect Network Data 668

Environmental Monitoring 668

Traffic Monitoring Tools 672

Manage Network Traffic 683

Performance Baselines 684

Bandwidth Management 685

Flow Control 686

Congestion Control 687

QoS (Quality of Service) Assurance 688

Plan Response and Recovery

Strategies 691

Incident Response 692

Data Preservation 693

Disaster Recovery Planning 694

Disaster Recovery Contingencies 695

Power Management 696

Backup Systems 701

Module Summary_706

Key Terms_707

Review Questi ons_708

Hands-On Projects_709

appendix a

CompTIA Network+ N10-008

Certification Exam

Objectives 725

appendix B

Visual Guide to Connectors 745

appendix C

CompTIA Network+ Practice

Exam_747

appendix D

Rubric for Hands-on

Projects and Capstone

Projects 759

GLO SSARY 761

Index

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