CCENT Cisco Certified Entry Networking Technician Study Guide
(ICND1 Exam 640-822)
2nd Edition
Published on 4. January 2013
Book
Paperback/Softback
576 pages
978-1-118-43525-0 (ISBN)
Description
Todd Lammle prepares you for Cisco's entry-level networking certification exam, CCENT
If you're preparing for your Cisco Certified Entry Networking Technician (CCENT) certification, CCENT: Cisco Certified Entry Networking Technician Study Guide, Second Edition is the book you need. Cisco working authority Todd Lammle covers all the objectives for exam ICND1-the required exam for all CCENT candidates. It also includes useful hands-on labs and practice test questions.
* Prepares CCENT candidates for exam 640-822: Interconnecting Cisco Networking Devices Part 1 (ICND1)
* Expert instruction from well-known, leading Cisco networking authority Todd Lammle
* Covers all exam objectives and features expanded coverage on key topics in the exam
* Includes hands-on labs, real-world scenarios, and challenging review questions
* Gives you online access to bonus practice exams, electronic flashcards, a searchable glossary, and more
In addition, you'll get online access to practice exams, electronic flashcards, and a searchable glossary-everything you need to prepare for the exam.
If you're preparing for your Cisco Certified Entry Networking Technician (CCENT) certification, CCENT: Cisco Certified Entry Networking Technician Study Guide, Second Edition is the book you need. Cisco working authority Todd Lammle covers all the objectives for exam ICND1-the required exam for all CCENT candidates. It also includes useful hands-on labs and practice test questions.
* Prepares CCENT candidates for exam 640-822: Interconnecting Cisco Networking Devices Part 1 (ICND1)
* Expert instruction from well-known, leading Cisco networking authority Todd Lammle
* Covers all exam objectives and features expanded coverage on key topics in the exam
* Includes hands-on labs, real-world scenarios, and challenging review questions
* Gives you online access to bonus practice exams, electronic flashcards, a searchable glossary, and more
In addition, you'll get online access to practice exams, electronic flashcards, and a searchable glossary-everything you need to prepare for the exam.
More details
Person
Todd Lammle, CCSI, CCNA, CCNP, CCSP, CCVP, is the authority on Cisco networking. He has been involved in computers and networking with Fortune 500 companies for almost 30 years. Todd is President of GlobalNet Training, Inc., a networking integration and training firm based in Dallas. He is the bestselling author of numerous Cisco books, including the popular CCNA: Cisco Certified Network Associate Study Guide, with over 200,000 copies in print. He can be reached through his website at www.lammle.com.
Content
Introduction xix
Exam Objectives xxvii
Assessment Test xxx
Chapter 1 Internetworking 1
Internetworking Basics 2
Addressing 3
Internetworking Models 11
The Layered Approach 11
Advantages of Reference Models 12
The OSI Reference Model 12
The Application Layer 15
The Presentation Layer 15
The Session Layer 16
The Transport Layer 16
The Network Layer 22
The Data Link Layer 24
The Physical Layer 27
Ethernet Networking 28
Collision Domain 28
Broadcast Domain 29
CSMA/CD 29
Half- and Full-Duplex Ethernet 31
Ethernet at the Data Link Layer 32
Ethernet at the Physical Layer 38
Ethernet Cabling 43
Straight-Through Cable 43
Crossover Cable 44
Rolled Cable 44
Data Encapsulation 47
Summary 51
Exam Essentials 52
Written Lab 1 54
Written Lab 1.1: OSI Questions 54
Written Lab 1.2: Defining the OSI Layers and Devices 55
Written Lab 1.3: Identifying Collision and Broadcast
Domains 56
Written Lab 1.4: Binary/Decimal/Hexadecimal Conversion 57
Review Questions 60
Chapter 2 Internet Protocols 65
TCP/IP and the DoD Model 66
The Process/Application Layer Protocols 68
The Host-to-Host Layer Protocols 75
The Internet Layer Protocols 85
IP Addressing 95
IP Terminology 95
The Hierarchical IP Addressing Scheme 96
Private IP Addresses 101
IPv4 Address Types 102
Layer 2 Broadcasts 103
Layer 3 Broadcasts 103
Unicast Address 103
Multicast Address 104
Summary 104
Exam Essentials 105
Written Lab 2 107
Review Questions 108
Chapter 3 IP Subnetting, Troubleshooting IP, and
Introduction to NAT 113
Subnetting Basics 114
IP Subnet-Zero 115
How to Create Subnets 116
Subnet Masks 117
Classless Inter-Domain Routing (CIDR) 118
Subnetting Class C Addresses 120
Subnetting Class B Addresses 130
Subnetting Class A Addresses 137
Troubleshooting IP Addressing 140
Determining IP Address Problems 143
Introduction to Network Address Translation (NAT) 148
Types of Network Address Translation 149
NAT Names 150
How NAT Works 150
Summary 152
Exam Essentials 153
Written Labs 3 154
Written Lab 3.1: Written Subnet Practice #1 154
Written Lab 3.2: Written Subnet Practice #2 155
Written Lab 3.3: Written Subnet Practice #3 155
Review Questions 156
hapter 4 Cisco's Internetworking Operating System (IOS) 161
The IOS User Interface 163
Cisco Router IOS 163
Connecting to a Cisco Router 163
Bringing Up a Router 165
Command-Line Interface (CLI) 169
Entering the CLI 169
Overview of Router Modes 170
CLI Prompts 170
Editing and Help Features 173
Gathering Basic Routing Information 178
Router and Switch Administrative Configurations 179
Hostnames 180
Banners 180
Setting Passwords 182
Setting Interface Descriptions 190
Router Interfaces 192
Bringing Up an Interface 195
Configuring an IP Address on an Interface 196
Viewing, Saving, and Erasing Configurations 201
Deleting the Configuration and Reloading the Router 202
Verifying Your Configuration 203
Summary 213
Exam Essentials 213
Written Lab 4 216
Hands-on Labs 217
Hands-on Lab 4.1: Erasing an Existing Configuration 217
Hands-on Lab 4.2: Exploring User, Privileged,
and Configuration Modes 218
Hands-on Lab 4.3: Using the Help and Editing Features 218
Hands-on Lab 4.4: Saving a Router Configuration 220
Hands-on Lab 4.5: Setting Passwords 220
Hands-on Lab 4.6: Setting the Hostname, Descriptions,
IP Address, and Clock Rate 222
Review Questions 225
Chapter 5 Managing a Cisco Internetwork 231
The Internal Components of a Cisco Router 232
The Router Boot Sequence 233
Managing Configuration Register 234
Understanding the Configuration Register Bits 234
Checking the Current Configuration Register Value 236
Changing the Configuration Register 237
Recovering Passwords 238
Boot System Commands 242
Backing Up and Restoring the Cisco IOS 243
Verifying Flash Memory 244
Backing Up the Cisco IOS 245
Restoring or Upgrading the Cisco Router IOS 246
Using the Cisco IOS File System (Cisco IFS) 247
Backing Up and Restoring the Cisco Configuration 252
Backing Up the Cisco Router Configuration 252
Restoring the Cisco Router Configuration 254
Erasing the Configuration 255
Using the Cisco IOS File System to Manage Your
Router's Configuration (Cisco IFS) 256
Using Cisco Discovery Protocol 258
Getting CDP Timers and Holdtime Information 258
Gathering Neighbor Information 259
Gathering Interface Traffic Information 264
Gathering Port and Interface Information 264
Documenting a Network Topology Using CDP 267
Using Telnet 270
Telnetting into Multiple Devices Simultaneously 272
Checking Telnet Connections 273
Checking Telnet Users 273
Closing Telnet Sessions 274
Resolving Hostnames 274
Building a Host Table 275
Using DNS to Resolve Names 277
Checking and Troubleshooting Network Connectivity 279
Using the ping Command 280
Using the traceroute Command 280
Debugging 282
Using the show processes Command 284
Summary 285
Exam Essentials 286
Written Lab 5 287
Written Lab 5.1 287
Written Lab 5.2 288
Hands-on Labs 288
Hands-on Lab 5.1: Backing Up Your Router IOS 289
Hands-on Lab 5.2: Upgrading or Restoring Your
Router IOS 289
Hands-on Lab 5.3: Backing Up the Router Configuration 290
Hands-on Lab 5.4: Using the Cisco Discovery
Protocol (CDP) 290
Hands-on Lab 5.5: Using Telnet 291
Hands-on Lab 5.6: Resolving Hostnames 292
Review Questions 294
Chapter 6 IP Routing 299
Routing Basics 301
The IP Routing Process 303
Testing Your IP Routing Understanding 309
Configuring IP Routing 313
Configuring IP Routing in the Network 327
Static Routing 327
Default Routing 338
Dynamic Routing 341
Routing Protocol Basics 341
Distance-Vector Routing Protocols 343
Routing Loops 345
Routing Information Protocol 347
RIP Timers 348
Configuring RIP Routing 348
Verifying the RIP Routing Tables 351
Configuring RIP Routing Example 2 353
Holding Down RIP Propagations 354
RIP Version 2 355
Verifying Your Configurations 358
The show ip protocols Command 358
The debug ip rip Command 360
Enabling RIPv2 on the Internetwork 363
Summary 367
Exam Essentials 368
Written Lab 6 369
Hands-on Labs 370
Hands-on Lab 6.1: Creating Static Routes 371
Hands-on Lab 6.2: Configuring RIP Routing 372
Review Questions 374
Chapter 7 Layer 2 Switching 381
Before Layer 2 Switching 382
Switching Services 385
Limitations of Layer 2 Switching 386
Bridging vs. LAN Switching 387
Three Switch Functions at Layer 2 387
Address Learning 388
Forward/Filter Decisions 389
Port Security 391
Cisco Catalyst Switches 392
S1 394
S2 395
Core 396
Summary 398
Exam Essentials 399
Written Lab 7 399
Review Questions 400
Chapter 8 Wireless Technologies 407
Introducing Wireless Technology 408
The 802.11 Standards 410
2.4GHz (802.11b) 412
2.4GHz (802.11g) 413
5GHz (802.11a) 414
Comparing 802.11 415
2.4GHz/5GHz (802.11n) 416
Basic Service Sets 417
BSS/IBSS 418
ESS 419
Wireless Security 419
Open Access 420
SSIDs, WEP, and MAC Address Authentication 420
WPA or WPA 2 Pre-Shared Key 421
Summary 422
Exam Essentials 423
Written Lab 8 423
Review Questions 424
Chapter 9 Security 429
Introduction to Security 430
Recognizing Security Threats 431
Common Attack Profiles 432
Mitigating Security Threats 435
Mitigating Password, Router, and Switch Attacks 436
Switch Port Security 437
Virtual Private Networks 440
IPsec 442
Summary 442
Exam Essentials 443
Written Lab 9 443
Review Questions 444
Chapter 10 Introduction to Wide Area Networks 449
Introduction to Wide Area Networks 450
Defining WAN Terms 451
WAN Connection Types 452
WAN Support 453
Cabling the Wide Area Network 455
Serial Transmission 455
Data Terminal Equipment and Data Communication
Equipment 456
High-Level Data-Link Control (HDLC) Protocol 457
Point-to-Point Protocol 459
PPP Session Establishment 460
PPP Authentication Methods 461
Configuring PPP on Cisco Routers 462
Configuring PPP Authentication 462
Verifying PPP Encapsulation 463
Summary 464
Exam Essentials 465
Written Lab 10 466
Hands-on Labs 466
Hands-on Lab 10.1: Configuring PPP Encapsulation and
Authentication 466
Hands-on Lab 10.2: Configuring and Monitoring HDLC 468
Review Questions 469
Appendix A Answers to Written Labs 475
Chapter 1: Internetworking 476
Written Lab 1.1 476
Written Lab 1.2 477
Written Lab 1.3 477
Written Lab 1.4 478
Chapter 2: Internet Protocols 481
Written Lab 2 481
Chapter 3: IP Subnetting, Troubleshooting IP, and
Introduction to NAT 481
Written Lab 3.1 481
Written Lab 3.2 482
Written Lab 3.3 483
Chapter 4: Cisco's Internetworking Operating System (IOS) 484
Written Lab 4 484
Chapter 5: Managing a Cisco Internetwork 485
Written Lab 5.1 485
Written Lab 5.2 485
Chapter 6: IP Routing 486
Written Lab 6 486
Chapter 7: Layer 2 Switching 486
Written Lab 7 486
Chapter 8: Wireless Technologies 487
Written Lab 8 487
Chapter 9: Security 487
Written Lab 9 487
Chapter 10: Introduction to Wide Area Networks 488
Written Lab 10 488
Appendix B Answers to Review Questions 489
Chapter 1: Internetworking 490
Chapter 2: Internet Protocols 492
Chapter 3: IP Subnetting, Troubleshooting IP, and
Introduction to NAT 493
Chapter 4: Cisco's Internetworking Operating System (IOS) 496
Chapter 5: Managing a Cisco Internetwork 497
Chapter 6: IP Routing 499
Chapter 7: Layer 2 Switching 501
Chapter 8: Wireless Technologies 503
Chapter 9: Security 504
Chapter 10: Introduction to Wide Area Networks 506
Appendix C About the Additional Study Tools 509
Additional Study Tools 510
Sybex Test Engine 510
Electronic Flashcards 510
Study Sheets 510
Todd Lammle Videos 511
Todd Lammle Audios 511
PDF of Glossary of Terms 511
Adobe Reader 511
System Requirements 511
Using the Study Tools 511
Troubleshooting 512
Customer Care 512
Index 513
Exam Objectives xxvii
Assessment Test xxx
Chapter 1 Internetworking 1
Internetworking Basics 2
Addressing 3
Internetworking Models 11
The Layered Approach 11
Advantages of Reference Models 12
The OSI Reference Model 12
The Application Layer 15
The Presentation Layer 15
The Session Layer 16
The Transport Layer 16
The Network Layer 22
The Data Link Layer 24
The Physical Layer 27
Ethernet Networking 28
Collision Domain 28
Broadcast Domain 29
CSMA/CD 29
Half- and Full-Duplex Ethernet 31
Ethernet at the Data Link Layer 32
Ethernet at the Physical Layer 38
Ethernet Cabling 43
Straight-Through Cable 43
Crossover Cable 44
Rolled Cable 44
Data Encapsulation 47
Summary 51
Exam Essentials 52
Written Lab 1 54
Written Lab 1.1: OSI Questions 54
Written Lab 1.2: Defining the OSI Layers and Devices 55
Written Lab 1.3: Identifying Collision and Broadcast
Domains 56
Written Lab 1.4: Binary/Decimal/Hexadecimal Conversion 57
Review Questions 60
Chapter 2 Internet Protocols 65
TCP/IP and the DoD Model 66
The Process/Application Layer Protocols 68
The Host-to-Host Layer Protocols 75
The Internet Layer Protocols 85
IP Addressing 95
IP Terminology 95
The Hierarchical IP Addressing Scheme 96
Private IP Addresses 101
IPv4 Address Types 102
Layer 2 Broadcasts 103
Layer 3 Broadcasts 103
Unicast Address 103
Multicast Address 104
Summary 104
Exam Essentials 105
Written Lab 2 107
Review Questions 108
Chapter 3 IP Subnetting, Troubleshooting IP, and
Introduction to NAT 113
Subnetting Basics 114
IP Subnet-Zero 115
How to Create Subnets 116
Subnet Masks 117
Classless Inter-Domain Routing (CIDR) 118
Subnetting Class C Addresses 120
Subnetting Class B Addresses 130
Subnetting Class A Addresses 137
Troubleshooting IP Addressing 140
Determining IP Address Problems 143
Introduction to Network Address Translation (NAT) 148
Types of Network Address Translation 149
NAT Names 150
How NAT Works 150
Summary 152
Exam Essentials 153
Written Labs 3 154
Written Lab 3.1: Written Subnet Practice #1 154
Written Lab 3.2: Written Subnet Practice #2 155
Written Lab 3.3: Written Subnet Practice #3 155
Review Questions 156
hapter 4 Cisco's Internetworking Operating System (IOS) 161
The IOS User Interface 163
Cisco Router IOS 163
Connecting to a Cisco Router 163
Bringing Up a Router 165
Command-Line Interface (CLI) 169
Entering the CLI 169
Overview of Router Modes 170
CLI Prompts 170
Editing and Help Features 173
Gathering Basic Routing Information 178
Router and Switch Administrative Configurations 179
Hostnames 180
Banners 180
Setting Passwords 182
Setting Interface Descriptions 190
Router Interfaces 192
Bringing Up an Interface 195
Configuring an IP Address on an Interface 196
Viewing, Saving, and Erasing Configurations 201
Deleting the Configuration and Reloading the Router 202
Verifying Your Configuration 203
Summary 213
Exam Essentials 213
Written Lab 4 216
Hands-on Labs 217
Hands-on Lab 4.1: Erasing an Existing Configuration 217
Hands-on Lab 4.2: Exploring User, Privileged,
and Configuration Modes 218
Hands-on Lab 4.3: Using the Help and Editing Features 218
Hands-on Lab 4.4: Saving a Router Configuration 220
Hands-on Lab 4.5: Setting Passwords 220
Hands-on Lab 4.6: Setting the Hostname, Descriptions,
IP Address, and Clock Rate 222
Review Questions 225
Chapter 5 Managing a Cisco Internetwork 231
The Internal Components of a Cisco Router 232
The Router Boot Sequence 233
Managing Configuration Register 234
Understanding the Configuration Register Bits 234
Checking the Current Configuration Register Value 236
Changing the Configuration Register 237
Recovering Passwords 238
Boot System Commands 242
Backing Up and Restoring the Cisco IOS 243
Verifying Flash Memory 244
Backing Up the Cisco IOS 245
Restoring or Upgrading the Cisco Router IOS 246
Using the Cisco IOS File System (Cisco IFS) 247
Backing Up and Restoring the Cisco Configuration 252
Backing Up the Cisco Router Configuration 252
Restoring the Cisco Router Configuration 254
Erasing the Configuration 255
Using the Cisco IOS File System to Manage Your
Router's Configuration (Cisco IFS) 256
Using Cisco Discovery Protocol 258
Getting CDP Timers and Holdtime Information 258
Gathering Neighbor Information 259
Gathering Interface Traffic Information 264
Gathering Port and Interface Information 264
Documenting a Network Topology Using CDP 267
Using Telnet 270
Telnetting into Multiple Devices Simultaneously 272
Checking Telnet Connections 273
Checking Telnet Users 273
Closing Telnet Sessions 274
Resolving Hostnames 274
Building a Host Table 275
Using DNS to Resolve Names 277
Checking and Troubleshooting Network Connectivity 279
Using the ping Command 280
Using the traceroute Command 280
Debugging 282
Using the show processes Command 284
Summary 285
Exam Essentials 286
Written Lab 5 287
Written Lab 5.1 287
Written Lab 5.2 288
Hands-on Labs 288
Hands-on Lab 5.1: Backing Up Your Router IOS 289
Hands-on Lab 5.2: Upgrading or Restoring Your
Router IOS 289
Hands-on Lab 5.3: Backing Up the Router Configuration 290
Hands-on Lab 5.4: Using the Cisco Discovery
Protocol (CDP) 290
Hands-on Lab 5.5: Using Telnet 291
Hands-on Lab 5.6: Resolving Hostnames 292
Review Questions 294
Chapter 6 IP Routing 299
Routing Basics 301
The IP Routing Process 303
Testing Your IP Routing Understanding 309
Configuring IP Routing 313
Configuring IP Routing in the Network 327
Static Routing 327
Default Routing 338
Dynamic Routing 341
Routing Protocol Basics 341
Distance-Vector Routing Protocols 343
Routing Loops 345
Routing Information Protocol 347
RIP Timers 348
Configuring RIP Routing 348
Verifying the RIP Routing Tables 351
Configuring RIP Routing Example 2 353
Holding Down RIP Propagations 354
RIP Version 2 355
Verifying Your Configurations 358
The show ip protocols Command 358
The debug ip rip Command 360
Enabling RIPv2 on the Internetwork 363
Summary 367
Exam Essentials 368
Written Lab 6 369
Hands-on Labs 370
Hands-on Lab 6.1: Creating Static Routes 371
Hands-on Lab 6.2: Configuring RIP Routing 372
Review Questions 374
Chapter 7 Layer 2 Switching 381
Before Layer 2 Switching 382
Switching Services 385
Limitations of Layer 2 Switching 386
Bridging vs. LAN Switching 387
Three Switch Functions at Layer 2 387
Address Learning 388
Forward/Filter Decisions 389
Port Security 391
Cisco Catalyst Switches 392
S1 394
S2 395
Core 396
Summary 398
Exam Essentials 399
Written Lab 7 399
Review Questions 400
Chapter 8 Wireless Technologies 407
Introducing Wireless Technology 408
The 802.11 Standards 410
2.4GHz (802.11b) 412
2.4GHz (802.11g) 413
5GHz (802.11a) 414
Comparing 802.11 415
2.4GHz/5GHz (802.11n) 416
Basic Service Sets 417
BSS/IBSS 418
ESS 419
Wireless Security 419
Open Access 420
SSIDs, WEP, and MAC Address Authentication 420
WPA or WPA 2 Pre-Shared Key 421
Summary 422
Exam Essentials 423
Written Lab 8 423
Review Questions 424
Chapter 9 Security 429
Introduction to Security 430
Recognizing Security Threats 431
Common Attack Profiles 432
Mitigating Security Threats 435
Mitigating Password, Router, and Switch Attacks 436
Switch Port Security 437
Virtual Private Networks 440
IPsec 442
Summary 442
Exam Essentials 443
Written Lab 9 443
Review Questions 444
Chapter 10 Introduction to Wide Area Networks 449
Introduction to Wide Area Networks 450
Defining WAN Terms 451
WAN Connection Types 452
WAN Support 453
Cabling the Wide Area Network 455
Serial Transmission 455
Data Terminal Equipment and Data Communication
Equipment 456
High-Level Data-Link Control (HDLC) Protocol 457
Point-to-Point Protocol 459
PPP Session Establishment 460
PPP Authentication Methods 461
Configuring PPP on Cisco Routers 462
Configuring PPP Authentication 462
Verifying PPP Encapsulation 463
Summary 464
Exam Essentials 465
Written Lab 10 466
Hands-on Labs 466
Hands-on Lab 10.1: Configuring PPP Encapsulation and
Authentication 466
Hands-on Lab 10.2: Configuring and Monitoring HDLC 468
Review Questions 469
Appendix A Answers to Written Labs 475
Chapter 1: Internetworking 476
Written Lab 1.1 476
Written Lab 1.2 477
Written Lab 1.3 477
Written Lab 1.4 478
Chapter 2: Internet Protocols 481
Written Lab 2 481
Chapter 3: IP Subnetting, Troubleshooting IP, and
Introduction to NAT 481
Written Lab 3.1 481
Written Lab 3.2 482
Written Lab 3.3 483
Chapter 4: Cisco's Internetworking Operating System (IOS) 484
Written Lab 4 484
Chapter 5: Managing a Cisco Internetwork 485
Written Lab 5.1 485
Written Lab 5.2 485
Chapter 6: IP Routing 486
Written Lab 6 486
Chapter 7: Layer 2 Switching 486
Written Lab 7 486
Chapter 8: Wireless Technologies 487
Written Lab 8 487
Chapter 9: Security 487
Written Lab 9 487
Chapter 10: Introduction to Wide Area Networks 488
Written Lab 10 488
Appendix B Answers to Review Questions 489
Chapter 1: Internetworking 490
Chapter 2: Internet Protocols 492
Chapter 3: IP Subnetting, Troubleshooting IP, and
Introduction to NAT 493
Chapter 4: Cisco's Internetworking Operating System (IOS) 496
Chapter 5: Managing a Cisco Internetwork 497
Chapter 6: IP Routing 499
Chapter 7: Layer 2 Switching 501
Chapter 8: Wireless Technologies 503
Chapter 9: Security 504
Chapter 10: Introduction to Wide Area Networks 506
Appendix C About the Additional Study Tools 509
Additional Study Tools 510
Sybex Test Engine 510
Electronic Flashcards 510
Study Sheets 510
Todd Lammle Videos 511
Todd Lammle Audios 511
PDF of Glossary of Terms 511
Adobe Reader 511
System Requirements 511
Using the Study Tools 511
Troubleshooting 512
Customer Care 512
Index 513