Comptia Network+ N10-007 Cert Guide

Anthony Sequeira, CCIE No. 15626, is a seasoned trainer and author regarding all levels and tracks of Cisco certification. Anthony formally began his career in the information technology industry in 1994 with IBM in Tampa, Florida. He quickly formed his own computer consultancy, Computer Solutions, and then discovered his true passion—teaching and writing about Microsoft and Cisco technologies. Anthony joined Mastering Computers in 1996 and lectured to massive audiences around the world about the latest in computer technologies. Mastering Computers became the revolutionary online training company, KnowledgeNet, and Anthony trained there for many years. Anthony is currently pursuing his second CCIE in the area of security and then his third Cisco Data Center! When not writing for Cisco Press, Anthony is a full-time instructor at CBT Nuggets.

Introduction xxviii
Chapter 1 Computer Network Fundamentals 3
Foundation Topics 4
Defining a Network 4
The Purpose of Networks 4
Overview of Network Components 5
Networks Defined by Geography 7
LAN 7
WAN 8
WLAN 8
SAN 9
Other Categories of Networks 9
Networks Defined by Topology 10
Physical Versus Logical Topology 10
Bus Topology 11
Ring Topology 13
Star Topology 15
Hub-and-Spoke Topology 16
Full-Mesh Topology 17
Partial-Mesh Topology 18
Wireless Topologies 20
Ad Hoc 20
Infrastructure 20
Mesh 20
Networks Defined by Resource Location 21
Client/Server Networks 21
Peer-to-Peer Networks 22
Real-World Case Study 24
Summary 25
Exam Preparation Tasks 25
Review All the Key Topics 25
Complete Tables and Lists from Memory 26
Define Key Terms 26
Complete Chapter 1 Hands-On Lab in Network+ Simulator Lite 26
Additional Resources 26
Review Questions 26
Chapter 2 The OSI Reference Model 31
Foundation Topics 32
The Purpose of Reference Models 32
The OSI Model 33
The TCP/IP Stack 49
Real-World Case Study 56
Summary 57
Exam Preparation Tasks 58
Review All the Key Topics 58
Complete Tables and Lists from Memory 59
Define Key Terms 59
Complete Chapter 2 Hands-On Labs in Network+ Simulator Lite 59
Additional Resources 59
Review Questions 60
Chapter 3 Network Components 63
Foundation Topics 64
Media 64
Coaxial Cable 64
Twisted-Pair Cable 66
Shielded Twisted Pair 66
Unshielded Twisted Pair 67
Plenum Versus Nonplenum Cable 70
Fiber-Optic Cable 70
Multimode Fiber 70
Single-Mode Fiber 72
Fiber Connector Polishing Styles 74
Media Converters 75
Cable Distribution 75
Wireless Technologies 77
Technologies for the Internet of Things 78
Network Infrastructure Devices 79
Hubs 80
Bridges 81
Switches 82
Multilayer Switches 89
Routers 90
Infrastructure Device Summary 91
Specialized Network Devices 91
VPN Concentrators 91
Firewalls 92
DNS Servers 93
DHCP Servers 96
Proxy Servers 98
Content Engines 99
Content Switches 100
Other Specialized Devices 101
Virtual Network Devices 101
Virtual Servers 101
Virtual Routers and Firewalls 103
Virtual Switches 103
Virtual Desktops 104
Other Virtualization Solutions 105
Cloud Computing 105
Software-Defined Networking (SDN) 107
Voice over IP Protocols and Components 107
Real-World Case Study 108
Summary 110
Exam Preparation Tasks 110
Review All the Key Topics 110
Complete Tables and Lists from Memory 111
Define Key Terms 112
Complete Chapter 3 Hands-On Labs in Network+ Simulator Lite 112
Additional Resources 112
Review Questions 113
Chapter 4 Ethernet Technology 117
Foundation Topics 118
Principles of Ethernet 118
Ethernet Origins 118
Carrier-Sense Multiple Access/Collision Detect 120
Distance and Speed Limitations 123
Ethernet Switch Features 126
Virtual LANs 126
Switch Configuration for an Access Port 128
Trunks 129
Switch Configuration for a Trunk Port 130
Spanning Tree Protocol 130
Corruption of a Switch’s MAC Address Table 131
Broadcast Storms 132
STP Operation 133
Link Aggregation 136
LACP Configuration 137
Power over Ethernet 138
Port Monitoring 139
Port Mirroring Configuration 141
User Authentication 141
Management Access and Authentication 142
First-Hop Redundancy 144
Other Switch Features 145
Real-World Case Study 145
Summary 146
Exam Preparation Tasks 146
Review All the Key Topics 146
Complete Tables and Lists from Memory 147
Define Key Terms 147
Complete Chapter 4 Hands-On Labs in Network+ Simulator Lite 147
Additional Resources 148
Review Questions 148
Chapter 5 IPv4 and IPv6 Addresses 153
Foundation Topics 154
Binary Numbering 154
Principles of Binary Numbering 154
Converting a Binary Number to a Decimal Number 155
Converting a Decimal Number to a Binary Number 155
Binary Numbering Practice 157
Binary Conversion Exercise 1 157
Binary Conversion Exercise 1: Solution 158
Binary Conversion Exercise 2 158
Binary Conversion Exercise 2: Solution 158
Binary Conversion Exercise 3 159
Binary Conversion Exercise 3: Solution 159
Binary Conversion Exercise 4 160
Binary Conversion Exercise 4: Solution 160
IPv4 Addressing 161
IPv4 Address Structure 161
Classes of Addresses 163
Types of Addresses 165
Assigning IPv4 Addresses 166
IP Addressing Components 167
Static Configuration 168
Dynamic Configuration 172
BOOTP 173
DHCP 173
Automatic Private IP Addressing 174
Subnetting 176
Purpose of Subnetting 176
Subnet Mask Notation 177
Subnet Notation: Practice Exercise 1 178
Subnet Notation: Practice Exercise 1 Solution 178
Subnet Notation: Practice Exercise 2 179
Subnet Notation: Practice Exercise 2 Solution 179
Extending a Classful Mask 179
Borrowed Bits 179
Calculating the Number of Created Subnets 180
Calculating the Number of Available Hosts 180
Basic Subnetting Practice: Exercise 1 181
Basic Subnetting Practice: Exercise 1 Solution 181
Basic Subnetting Practice: Exercise 2 182
Basic Subnetting Practice: Exercise 2 Solution 182
Calculating New IP Address Ranges 183
Advanced Subnetting Practice: Exercise 1 186
Advanced Subnetting Practice: Exercise 1 Solution 186
Advanced Subnetting Practice: Exercise 2 187
Advanced Subnetting Practice: Exercise 2 Solution 188
Additional Practice 189
Classless Interdomain Routing 190
IP Version 6 191
Need for IPv6 191
IPv6 Address Structure 192
IPv6 Address Types 193
IPv6 Data Flows 194
Real-World Case Study 196
Summary 197
Exam Preparation Tasks 197
Review All the Key Topics 197
Complete Tables and Lists from Memory 198
Define Key Terms 199
Complete Chapter 5 Hands-On Labs in Network+ Simulator Lite 199
Additional Resources 199
Review Questions 200
Chapter 6 Routing IP Packets 205
Foundation Topics 206
Basic Routing Processes 206
Sources of Routing Information 209
Directly Connected Routes 209
Static Routes 210
Dynamic Routing Protocols 211
Routing Protocol Characteristics 213
Believability of a Route 214
Metrics 214
Interior Versus Exterior Gateway Protocols 215
Route Advertisement Method 215
Distance Vector 216
Link State 218
Routing Protocol Examples 218
Address Translation 220
NAT 220
PAT 222
Multicast Routing 224
IGMP 224
PIM 226
PIM-DM 227
PIM-SM 229
Real-World Case Study 230
Summary 231
Exam Preparation Tasks 232
Review All the Key Topics 232
Complete Tables and Lists from Memory 233
Define Key Terms 233
Complete Chapter 6 Hands-On Lab in Network+ Simulator Lite 233
Additional Resources 233
Review Questions 234
Chapter 7 Wide Area Networks (WANs) 239
Foundation Topics 240
WAN Properties 240
WAN Connection Types 240
WAN Data Rates 242
WAN Media Types 243
Physical Media 243
Wireless Media 244
WAN Technologies 245
Dedicated Leased Line 246
T1 246
E1 247
T3 247
E3 247
CSU/DSU 248
Metro Ethernet 248
Point-to-Point Protocol 249
Digital Subscriber Line 252
Cable Modem 254
Synchronous Optical Network 255
Satellite 257
Plain Old Telephone Service 258
Integrated Services Digital Network 260
Frame Relay 262
Asynchronous Transfer Mode 264
Multiprotocol Label Switching 266
Overlay Networks 268
Real-World Case Study 268
Summary 269
Exam Preparation Tasks 270
Review All the Key Topics 270
Complete Tables and Lists from Memory 270
Define Key Terms 271
Complete Chapter 7 Hands-On Lab in Network+ Simulator Lite 271
Additional Resources 271
Review Questions 271
Chapter 8 Wireless Technologies 275
Foundation Topics 276
Introducing Wireless LANs 276
WLAN Concepts and Components 276
Wireless Routers 276
Wireless Access Point 277
Antennas 278
Frequencies and Channels 281
CSMA/CA 283
Transmission Methods 284
WLAN Standards 285
Deploying Wireless LANs 287
Types of WLANs 287
Sources of Interference 289
Wireless AP Placement 291
Securing Wireless LANs 292
Security Issues 292
Approaches to WLAN Security 294
Security Standards 295
Additional Wireless Options 297
Real-World Case Study 298
Summary 298
Exam Preparation Tasks 299
Review All the Key Topics 299
Complete Tables and Lists from Memory 299
Define Key Terms 300
Complete Chapter 8 Hands-On Lab in Network+ Simulator Lite 300
Additional Resources 300
Review Questions 300
Chapter 9 Network Optimization 305
Foundation Topics 306
High Availability 306
High-Availability Measurement 306
Fault-Tolerant Network Design 307
Hardware Redundancy 308
Layer 3 Redundancy 309
Design Considerations for High-Availability Networks 310
High-Availability Best Practices 311
Content Caching 312
Load Balancing 312
Hardware Redundancy 313
QoS Technologies 313
Introduction to QoS 314
QoS Configuration Steps 315
QoS Components 316
QoS Mechanisms 317
Case Study: SOHO Network Design 323
Case Study Scenario 323
Suggested Solution 325
IP Addressing 325
Layer 1 Media 326
Layer 2 Devices 327
Layer 3 Devices 327
Wireless Design 328
Environmental Factors 329
Cost Savings Versus Performance 329
Topology 329
Real-World Case Study 330
Summary 331
Exam Preparation Tasks 331
Review All the Key Topics 331
Complete Tables and Lists from Memory 332
Define Key Terms 332
Complete Chapter 9 Hands-On Lab in Network+ Simulator Lite 332
Additional Resources 333
Review Questions 333
Chapter 10 Command-Line Tools 337
Foundation Topics 338
Windows Commands 338
arp 338
ipconfig 340
nbtstat 343
netstat 346
nslookup 348
ping 350
ping with IPv6 352
route 352
tracert 356
tracert with IPv6 358
PathPing 358
UNIX Commands 358
arp 360
dig and nslookup 362
host 363
ifconfig 363
iptables 364
nmap 365
tcpdump 365
traceroute 365
traceroute for IPv6 366
netstat 366
ping 368
Real-World Case Study 371
Summary 371
Exam Preparation Tasks 371
Review All the Key Topics 371
Complete Tables and Lists from Memory 372
Define Key Terms 373
Complete Chapter 10 Hands-On Lab in Network+ Simulator Lite 373
Additional Resources 373
Review Questions 374
Chapter 11 Network Management 379
Foundation Topics 380
Maintenance Tools 380
Bit-Error Rate Tester 380
Butt Set 381
Cable Certifier 381
Cable Tester 382
Connectivity Software 382
Crimper 383
Electrostatic Discharge Wrist Strap 383
Environmental Monitor 384
Loopback Plug 385
Multimeter 385
Protocol Analyzer 386
Wi-Fi Analyzer 387
Looking-Glass Sites 387
Speed Test Sites 388
Punch-Down Tool 388
Throughput Tester 388
Time Domain Reflectometer and Optical Time Domain Reflectometer 389
Toner Probe 390
Network Documentation 390
Monitoring Resources and Reports 392
SNMP 392
Syslog 395
Logs 398
Application Logs 398
Security Logs 399
System Logs 399
Remote Access Methods 400
Real-World Case Study 401
Summary 402
Exam Preparation Tasks 402
Review All the Key Topics 402
Complete Tables and Lists from Memory 403
Define Key Terms 403
Complete Chapter 11 Hands-On Lab in Network+ Simulator Lite 403
Additional Resources 404
Review Questions 404
Chapter 12 Network Security 409
Foundation Topics 410
Security Fundamentals 410
Network Security Goals 410
Confidentiality 410
Integrity 414
Availability 415
Categories of Network Attacks 415
Confidentiality Attacks 415
Integrity Attacks 419
Availability Attacks 422
Defending Against Attacks 427
User Training 427
Patching 428
Security Policies 429
Governing Policy 430
Technical Policies 431
End-User Policies 431
More Detailed Documents 431
Incident Response 432
Vulnerability Scanners 433
Nessus 434
Nmap 434
Honey Pots and Honey Nets 435
Access Control Lists 436
Physical Security Devices 437
Network Device Hardening 438
Layer 2 Protections 439
Remote-Access Security 439
Firewalls 442
Firewall Types 442
Firewall Inspection Types 443
Packet-Filtering Firewall 443
Stateful Firewall 444
Firewall Zones 445
Unified Threat Management Firewalls 446
Virtual Private Networks 447
Overview of IPSec with IKEv1 449
IKE Modes and Phases 449
Authentication Header and Encapsulating Security Payload 451
The Five Steps in Setting Up and Tearing Down an IPSec Site-to-Site VPN Using IKEv1 452
Other VPN Technologies 454
Intrusion Detection and Prevention 454
IDS Versus IPS 455
IDS and IPS Device Categories 456
Detection Methods 456
Deploying Network-Based and Host-Based Solutions 458
Real-World Case Study 459
Summary 460
Exam Preparation Tasks 461
Review All the Key Topics 461
Complete Tables and Lists from Memory 462
Define Key Terms 462
Complete Chapter 12 Hands-On Lab in Network Simulator Lite 463
Additional Resources 463
Review Questions 463
Chapter 13 Network Policies and Best Practices 467
Foundation Topics 468
Policies 468
Password Policy 468
Data Loss Prevention 469
Remote-Access Policies 470
Incident Response Policies 470
Bring Your Own Device (BYOD) 471
Acceptable Use Policy (AUP) 471
Safety Procedures 472
Best Practices 472
Privileged User Agreement (PUA) 472
On-boarding/Off-boarding Procedures 473
Licensing Restrictions 473
International Export Controls 474
Non-Disclosure Agreement (NDA) 474
System Life Cycle 474
Real-World Case Study 475
Summary 475
Exam Preparation Tasks 476
Review All the Key Topics 476
Complete Tables and Lists from Memory 476
Define Key Terms 476
Complete Chapter 13 Hands-On Lab in Network+ Simulator Lite 477
Additional Resources 477
Review Questions 477
Chapter 14 Network Troubleshooting 481
Foundation Topics 482
Troubleshooting Basics 482
Troubleshooting Fundamentals 482
Structured Troubleshooting Methodology 484
Physical Layer Troubleshooting 487
Physical Layer Troubleshooting: Scenario 488
Physical Layer Troubleshooting: Solution 489
Data Link Layer Troubleshooting 490
Data Link Layer Troubleshooting: Scenario 491
Data Link Layer Troubleshooting: Solution 491
Network Layer Troubleshooting 492
Layer 3 Data Structures 492
Common Layer 3 Troubleshooting Issues 494
Network Layer Troubleshooting: Scenario 496
Network Layer Troubleshooting: Solution 496
Wireless Troubleshooting 497
Wireless Network Troubleshooting: Scenario 499
Wireless Network Troubleshooting: Solution 500
Specialized Networks 500
Real-World Case Study 501
Troubleshooting Scenarios 501
Summary 522
Exam Preparation Tasks 523
Review All the Key Topics 523
Complete Tables and Lists from Memory 523
Define Key Terms 524
Complete Chapter 14 Hands-On Lab in Network+ Simulator Lite 524
Additional Resources 524
Review Questions 524
Chapter 15 Final Preparation 529
Tools for Final Preparation 529
Video Training 530
Memory Tables 530
Simulations and Performance-Based Exercises 531
End-of-Chapter Review Tools 531
Suggested Plan for Final Review and Study 531
Strategies for Taking the Exam 533
Summary 535
Appendix A Answers to Review Questions 537
Appendix B CompTIA Network+ N10-07 Cert Guide Exam Updates 547
Glossary 551


ONLINE ELEMENTS:
Appendix C Memory Tables
Appendix D Memory Tables Answer Key
Appendix E Study Planner
Exam Essentials Interactive Study Guide
Key Terms Flash Cards Application
Instructional Videos
Performance-Based Exercises
CompTIA Network+ N10-007 Hands-on Lab Simulator Lite Software