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CCENT ICND1 100-101 Exam Cram, CourseSmart eTextbook, 2nd Edition

By Michael Valentine, Keith Barker

Published by Pearson IT Certification

Published Date: Dec 9, 2013

Description

CCENT 640-823 Exam Cram is the perfect study guide to help your student pass Cisco’s challenging CCENT exam. It provides coverage and practice questions for every exam topic. The book contains an extensive set of preparation tools which has made the Exam Cram series one of the most popular study guides in the technical certification market. Clear links to exam objectives help readers organize their study. Cram Saver quizzes help them assess knowledge in each section. Concise but detailed topic review sections help readers understand exactly what they need to know on the exam. Exam Alerts help identify potential exam trouble spots. The Cram Sheet helps the reader focus on key exam topics for review and last minute preparation. Review questions help to test knowledge, and the powerful Pearson IT Certification Practice Test software contains several complete exams to ensure each reader is ready for exam day.

Table of Contents

Introduction . . . . . . . . . . . . . . . . . . . 1

Taking a Certification Exam . . . . . . . .  . . . . . . . 2

Tracking Your Certification Status . . . . .  . . . . . . . 3

How to Prepare for an Exam . . . . . . . .  . . . . . . . . 4

    What This Book Will Not Do . . . . . . . . . .  . . . . . 5

    What This Book Is Designed to Do . . . . . . . . . . . . 5

About This Book . . . . . . . .  . . . . . . . . . . . 6

    CCENT Official Exam Topics . . . .. . . . . 6

    Chapter Formats . . . . . . . . . . . . . . . . . 12

Pearson IT Certification Practice Test Engine and Questions on the CD-ROM .  . . 14

    Install the Software from the CD . . . . . . . . .. . . . . 14

    Activate and Download the Practice Exam . . . . . . . . . . 15

    Activating Other Exams . . . . . . . .  . . . . . . . 16

    Contacting the Authors . . . . . . . . . . . 16

 

Self-Assessment . . . . . .  . . . . . . . . . . 17

CCENT in the Real World . . . . . . . . . . . . . 17

    The Ideal CCENT Candidate . . . . .  . . . . . . . 18

    Put Yourself to the Test . . . . . . . . . . 19

 

CHAPTER 1: Networking Fundamentals . . . . . . . 25

Essential Terms and Components . . . .. . . . . . . . 26

    Topologies . . . . . . .. . . . . . . . 27

    Ethernet . . . . . . . . . . . . . . 28

    WAN Technologies . . . . . .  . . . . . 31

Review Questions . . . . . . . . . . . .  . . . . . 34

Answers to Review Questions . . . .  . . . . . . 36

What Next? . . . . . . . . . . . . . . 37

 

CHAPTER 2: Network Models . . . . . . . . 39

Cisco Hierarchical Design . . . .. . . . . . . . . . . 40

    Access Layer . . . . . . . . . . . . . . . . . 40

    Distribution Layer . . . . . . . . . . . . . 41

    Core Layer . . . . . . . . . . . .  . . . . . 41

    Advantages of the Three-Layer Model . . .. . . . . 42

OSI Model . . . . . . . . . . . .  . . . . 44

    Layer 7: The Application Layer . . . . . .  . . . 45

    Layer 6: The Presentation Layer . . . . . . . . . 47

    Layer 5: The Session Layer . . .. . . . . . . . 47

    Layer 4: The Transport Layer . . . .  . . . . 47

    Layer 3: The Network Layer . . . .. . . . . . . 54

    Layer 2: The Data Link Layer . . . . . . . . . . . 56

    Layer 1: The Physical Layer . . . . . . . . . . . . . 57

TCP/IP Model . . . . . .. . . . . . . 61

Review Questions . . . . . . . . . .. . . . . . . 64

Answers to Review Questions . . . . . . . . . . . . . 67

 

CHAPTER 3: Concepts in IP Addressing . . . . . . . 69

Binary . . . . . . . . . . .. . . . . 70

Hexadecimal . . . . . . . .. . . . . . . . 74

Conversion Between Binary, Hex, and Decimal .  . . . . . 75

    Decimal to Hexadecimal Conversions . . . . . . . . 75

    Hexadecimal to Decimal Conversions . . . .. . . . . 75

IP Address Components . . . .  . . . . . . . . . 77

    Address Class . . . . . . . .  . . . . . . 77

    Public and Private IP Addresses . . . . . . . . . 78

    Default Subnet Mask . . . . . . . . . . . 78

    The Network Field . . . . . . .. . . . . . . 79

    The Host Field . . . . . . . . . . . . . . . . 80

    Nondefault Masks . . . . . . . . . . . . . 80

    The Subnet Field . . . . . . . . .. . . . . . 81

Subnetting . . . . . . . . . . . . . . . . . . . . . 82

    Address Class and Default Mask . . . . . . . . . . . . . 83

    The Increment . . . . . . . . . . . . . . . . . . . 84

    Number of Hosts . . . . . . . . .. . . . . . 86

    The Broadcast ID . . . . . . . . . . . . . 88

    Number of Subnets . . . . . . . . .. . . . . . . 89

    Working with Subnetting Questions . . . .  . . . 91

    The Subnetting Chart . . . . . . . . . . . 93

VLSM . . . . . . . . . . . . . . . . . . . . 96

Route Summarization . . . . . . . . . . . . . . . . 100

    Summarization Guidelines . . . . . .. . . . . 102

    Determining Summary Addresses . . . . . . . 104

IPv6 . . . . . . . . . . . .. . . . . . . . . 110

    IPv6 Address Allocation . . . . . . . . . . . . . . . 112

    IPv6 Address Notation . . . . . . . . . . . . 113

    Types of IPv6 Addresses . . . . . . . . . . 114

    IPv6 Address Configuration . . . . .. . . . 115

    IPv6 Router Configuration . . . . . .. . . . . 116

    IPv6 Features . . . . . . . . . . . . . . . 117

    The IPv6 Header . . . . . . . .. . . . 118

    IPv6 Transition Strategies . . . . . .  . . . . 119

Review Questions . . . . . . . . . . . .. . . 122

Answers to Review Questions . . . . . . . . . 128

What Next? . . . . . . . . . . . . .. . . . 131

 

CHAPTER 4: Working with Cisco Equipment. . . . . . . 133

Introducing Your Cisco Gear . . .  . . . . . . . . . 134

    External Connections . . . . . .. . . . . . . . 135

    Other Connections . . . . . . . . . . . . . . . . 139

Connecting and Configuring Cisco Devices . . . .  . . . . 141

    Device Memory Locations . . . . . . . . . 142

    IOS Startup Process . . . . . . .. . . . . 142

    Setup Mode . . . . . . . . . . . . . . 144

    Configuration Register . . . . .. . . . . 144

    Password Recovery . . . . . . . . . . . 145

    Command-Line Modes . . . . .. . . . . 146

    Command Shortcuts . . . . . . . . . . . . . 148

Context-Sensitive Help . . . . .  . . . . 149

Managing IOS Licensing . . . . . . . . . . . 150

Remote Management . . . . . . . . . . . . . . 152

    Telnet . . . . . . . . . . . . . . . . . 152

    Secure Shell . . . . . . . . . . . . . 154

    Cisco Discovery Protocol . . . . . . . . . . . . . . 155

    Internet Control Message Protocol . . .  . . . 156

    Network Time Protocol . . . . . . . . . . . 158

    Simple Network Management Protocol. . . . .. . . 158

    Syslog . . . . . . . . . . .  . . . . . 159

    NetFlow . . . . . . . . . . . . . . 159

    Basic Switch Configuration . . . . . . . . . . 159

    Basic Router Configuration . . . . . . . . . 160

Review Questions . . . . . . . .. . . . . . . 164

Answers to Review Questions . . . . . . . . . . . . . . . 166

What Next? . . . . . . . . . . . . .  . . . . . . . 167

 

CHAPTER 5: Securing Your Cisco Devices . . . . .. .  . . . . 169

Securing Routers and Switches . . . . . .. . . . . . . . . . 170

    Configuring Password Security . . . . . . . .. . . . 170

Configuring SSH Access to Your Router . . . . . . . . . . 174

    External Authentication Methods . . . . . . . . . . . . . 176

Switch Port Security . . . . . . . . . . .. . . . . . . . 178

    Security Best Practices for Switches . . . . .. . . . . 178

Review Questions . . . . . . . . . . . . . . . . . . . . 184

Answers to Review Questions . . . . .. . . . . . . . . 186

What Next? . . . . . . . . . . . . . . . . . . . . . . . 187

 

CHAPTER 6: Basic Switch Operations and Configuration . .  . . . . 189

Bridging and Switching . . . . . . . . . . .. . . . . . . . 190

    Functions of Bridges and Switches . . . . . . . . . . 191

    The Differences Between Switches and Bridges . . . . . . . 195

    STP . . . . . . . . . . . . . . .. . . . . . 200

VLAN Concepts and Applications . . . . . . . . . . . . 204

    The Definition of a VLAN . . . . . . . . . 206

    Benefits of VLANs . . . . . . . .. . . . . . . . 206

    Implementing VLANs . . . . . .  . . . . 208

    VLAN Membership . . . . . . .  . . . . . 210

Trunking . . . . . . . . . . . . . . .  . . . . . . 212

    802.1Q . . . . . . . . . . . . . . . . . . 214

    Configuring Switches for Trunking . . . . . . . . . . 215

Review Questions . . . . . . . .  . . . . . . . . 219

Answers to Review Questions . . . . .  . . . . . . . . 222

What Next? . . . . . . . . . . . . . . . . . 224

 

CHAPTER 7: Basic Routing . . . .  . . 225

Routing Fundamentals . . . . . . . . . . . . . . 226

    The Next Hop Concept . . . . . . . . . . 227

    Connected Networks . . .  . . . . . . . . . 228

    Static Routes . . . . . . . . . . . . . . . 229

    Default Routes . . . . . . . . . . . . . . 230

    Dynamic Routes . . . . . . . . . . 232

    Understanding the Router Lookup Process and the IP Route Table . . .. . 235

Inter-VLAN Routing . . . . . . . . . . 242

    Router on a Stick . . . . . . . . . 243

    L3 Switching . . . .  . . . . . . . 245

OSPF . . . . . . . . . . . . . . . . . . . 248

    Characteristics . . . . . .. . . . . . . . 249

    Configuring Single-Area OSPFv2. . . . . . . . 254

    Configuring Single-Area OSPFv3. . . . . . . . . . . 258

    Verifying and Troubleshooting OSPF. . . . . . . . 260

    Verification of OSPFv3 . . .  . . . . . . . . 261

Review Questions . . . . . . . . . . .. . . . . . 265

Answers to Review Questions . . . .. . . . . . 269

 

CHAPTER 8: Visualizing Data Flow Between Two Hosts on a Network . .  . 271

Host-to-Host Direct Communications . . . . . . . . . 272

Host to Host Through a Switch . . . . . . . . . . . 275

Host to Host Through a Router . . . . . . . . . . 278

Review Questions . . . . . . . . . . . . . . .  . . . . 283

Answers to Review Questions . . . . . . . . . . . . . 286

What Next? . . . . . . . . . . . . . . 288

 

CHAPTER 9: IP Access Lists . . . . . . . 289

IP Access Lists as Packet Filters . . . . . . . . . . . . . 290

    Types of ACLs . . . . . .  . . . . . . . . . 293

Configuring and Implementing . . . . . . . . . . . . . . 296

    Configuring Standard ACLs . . . .  . . . . . . 297

    Configuring Extended ACLs . . . . . . . . . . . 300

    Filtering Telnet and SSH Access . . . . . . . . . . 302

Troubleshooting and Verifying ACL Configurations. . . . .. . . . 308

Review Questions . . . . . . . . . . . . . 311

Answers to Review Questions . . . . .  . . . . . . . . 316

What Next? . . . . . . . . . . . . . . 318

 

CHAPTER 10: IP Services . . .  . . 319

Network Address Translation . . .. . . . . . . . 320

    NAT Terminology . . . .  . . . . . . 321

    Applications, Advantages, and Disadvantages of NAT . . . . . . . . . 323

    Static NAT . . . . . . . .  . . . . . . . . . . . 324

    Dynamic NAT . . . . .. . . . . . . . . . . 326

    PAT . . . . . . . . . . . . . . . . . 328

    Verification and Troubleshooting NAT and PAT . . . . . 330

Network Time Protocol . . . . . . .  . . . . 334

    Configuring an IOS Router as an NTP Client . . . . . . . 335

    Verification of NTP . . . . .. . . . . . . . 336

DHCP . . . . . . . . .. . . . . . . . . 338

    Configuring an IOS Router as a DHCP Client . . . . . . 338

    Configuring an IOS Router as a DHCP Server . . .. . . . 339

    Verification of DHCP Operation . . . . . . . . 340

Review Questions . . . . . . .. . . . . . . . . . 343

Answers to Review Questions . . . . . .  . . . . . . 345

 

CHAPTER 11: Troubleshooting . . . . 347

Troubleshoot Layer 1 Problems . . .. . . . . . . . . . . 348

    Problems with the Wiring . . . . .. . . . . . . 348

    Duplex . . . . . . . . . . . . . . . . . . 349

    Finding the Errors . . . . . . .. . . . . . 349

Verify and Troubleshoot VLANs and Port Membership . . . .. . . . 353

    Troubleshooting VLANs . . . . .. . . . . . 354

Verify Trunk Configuration and Operation . . . .. . . . . . 357

    Is the Link Up and Configured? . . . . . . . . . . 357

    VLANs Must Exist for the Trunk to Support Them . . . . . . 357

    Administrative Versus Operational . . . . . . . . . 358

Troubleshoot Problems with IP Addressing and Host Configurations . . 361

    Verify Hosts Have Correct IP Addresses . . . . . . . . . . 362

    How to Remotely Change a Cisco IP Address . . . . . . . . 362

    Making Sure That We Have a Default Gateway on Hosts . . . . . . 362

    Troubleshooting NAT . . . . . . . .. . . . . . . . . 363

Troubleshoot ACL Issues . . . . . . . . . . . . 365

Review Questions . . . . . . . . . . . . . . . . . . . 368

Answers to Review Questions . . . . . . . . . . . . 375

 

Practice Exam 1 . . . . . . . . .  . . . . . . . 377

 

Answer Key to Practice Exam 1 . . . . . . . . . . . . 413

Answers at a Glance to Practice Exam 1 . . . . . . . . . 413

Answers with Explanations . . . . . . . .. . . . . 413

 

Practice Exam 2 . . . . . . . . . . . . .. . . . . 423

 

Answer Key to Practice Exam 2 . . . . . . . . . . . . . . . 459

Answers at a Glance to Practice Exam 2 . . . . . . . . . . . 459

Answers with Explanations . . . . . . . . . . . . 460

 

Glossary . . . .  . . . . . . . 469

 

Index . . . . . . . . . . . . . . . . . 487

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