CCNA Certification Study Guide Volume 1

Auteur

ABOUT THE AUTHORS TODD LAMMLE, Cisco certified in almost every category, is the authority on Cisco networking and certification. His three decades of real-world experience is prevalent in his writing. He is an experienced networking engineer with very practical experience working on the largest bounded and unbounded networks in the world at such companies as Xerox, Hughes Aircraft, Texaco, AAA, Cisco, and Toshiba, among many others. Todd has published over 60 books, including the very popular and bestselling CCNA Cisco Certified Network Associate Study Guide and Cisco Firepower NGIPS. Todd runs an international training company from Texas, and a large-scale consulting business out of Colorado. You can reach Todd through his forum and blog at www.lammle.com/ccna. DONALD ROBB has over 15 years of experience with most areas of IT, including networking, security, collaboration, data center, cloud, SDN, and automation/devops. He's earned many advanced certifications and specializations. Currently he's a SDN/Cloud/DevOps SME. Visit his blog at https://www.the-packet-thrower.com and YouTube channel at https://www.youtube.com/c/ThePacketThrower.

Texte du rabat

Your complete guide to the UPDATED CCNA® exam The second edition of CCNA® Certification Study Guide Volume 1, is your one-stop resource for preparing for Cisco's Exam 200-301 v1.1. Requiring only one exam, the Cisco CCNA certification validates your ability to implement and administer a broad range of modern networking and IT infrastructure. Covering 100% of all exam objectives, accurate and reader-friendly chapters contain practical examples, hands-on exercises, in-depth explanations, and a wealth of challenging review questions. Access to Sybex's online learning system provides you with hundreds of practice test questions, electronic flashcards, a searchable glossary, and more. Coverage of 100% of all exam objectives in this Study Guide means you'll be ready for:

• Network Fundamentals
• Network Access
• IP Connectivity
• IP Services
• Security Fundamentals

• Automation and Programmability ABOUT THE CISCO CCNA CERTIFICATION The Cisco Certified Network Associate (CCNA) certification prepares candidates for associate-level job roles in IT technologies. The CCNA exam tests a candidate's knowledge and skills related to network fundamentals, network access, IP connectivity, IP services, security fundamentals, and automation and programmability. Interactive learning environment Take your exam prep to the next level with Sybex's superior interactive online study tools. To access our learning environment, simply visit www.wiley.com/go/sybextestprep, follow the instructions to register your book, and instantly gain one year of FREE access after activation to:

• 1 practice exam helps you to identify areas where further review is needed. Get more than 90% of the answers correct, and you're ready to take the certification exam.
• 100 electronic flashcards reinforce learning and last-minute prep before the exam
• Comprehensive glossary in PDF format gives you instant access to the key terms so you are fully prepared

Contenu

Introduction xxi

Assessment Test xxxv

Chapter 1 Network Fundamentals 1

Network Components 2

LANs and SOHOs 2

Routers and Switches 3

Next-Generation Firewalls and IPS 6

Network Topology Architectures 10

The Cisco Three-Layer Hierarchical Model (Three-Tier) 10

Collapsed Core (Two-Tier) 13

Spine-Leaf 14

Wide Area Networks 15

Defining WAN Terms 16

WAN Connection Bandwidth 17

Summary 18

Exam Essentials 18

Written Lab 19

Review Questions 20

Chapter 2 Ethernet Networking 23

Ethernet Networks in Review 24

Collision Domain 25

Broadcast Domains 26

Csma/cd 27

Half- and Full-Duplex Ethernet 29

Ethernet at the Data Link Layer 31

Ethernet at the Physical Layer 37

Ethernet Cabling 40

Categories of Ethernet Cables 41

Straight-Through Cable 42

Crossover Cable 42

Rolled Cable 44

Fiber-Optic 47

Power over Ethernet (802.3af, 802.3at) 48

Summary 48

Exam Essentials 49

Written Labs 50

Written Lab 2.1: Binary/Decimal/Hexadecimal Conversion 50

Written Lab 2.2: CSMA/CD Operations 54

Written Lab 2.3: Cabling 54

Review Questions 55

Chapter 3 Tcp/ip 61

Introducing TCP/IP 62

A Brief History of TCP/IP 62

TCP/IP and the DoD Model 63

The Process/Application Layer Protocols 65

The Host-to-Host or Transport Layer Protocols 74

The Internet Layer Protocols 84

IP Addressing 92

IP Terminology 92

The Hierarchical IP Addressing Scheme 93

Private IP Addresses (RFC 1918) 98

IPv4 Address Types 99

Layer 2 Broadcasts 100

Layer 3 Broadcasts 100

Unicast Address 101

Multicast Address 102

Summary 103

Exam Essentials 103

Written Labs 105

Written Lab 3.1: TCP/IP 105

Written Lab 3.2: Mapping Applications to the DoD Model 105

Review Questions 107

Chapter 4 Easy Subnetting 111

Subnetting Basics 112

How to Create Subnets 113

Subnet Masks 114

Classless Inter-Domain Routing (CIDR) 116

IP Subnet-Zero 117

Subnetting Class C Addresses 118

Subnetting Class B Addresses 130

Summary 138

Exam Essentials 139

Written Labs 139

Written Lab 4.1: Written Subnet Practice # 1 139

Written Lab 4.2: Written Subnet Practice # 2 140

Written Lab 4.3: Written Subnet Practice # 3 141

Review Questions 142

Chapter 5 Troubleshooting IP Addressing 147

Endpoint Overview 148

Desktops/Laptops 148

Mobile Phones/Tablets 148

Access Points 149

IP Phones 149

Internet of Things 149

Servers 149

Server Roles 150

Cisco's Way of Troubleshooting IP 151

Verify IP Parameters for Operating Systems 153

Determining IP Address Problems 154

Summary 159

Exam Essentials 159

Written Lab 160

Review Questions 161

Chapter 6 Cisco's Internetworking Operating System (IOS) 163

The IOS User Interface 164

Cisco IOS 165

Connecting to a Cisco IOS Device 165

Bringing Up a Switch 167

Command-Line Interface 167

Entering the cli 168

Overview of Router Modes 168

cli Prompts 169

Editing and Help Features 171

Administrative Configurations 176

Hostnames 177

Banners 177

Setting Passwords 179

Encrypting Your Passwords 185

Descriptions 187

Router and Switch Interfaces 189

Bringing Up an Interface 192

Viewing, Saving, and Erasing Configurations 198

Deleting the Configuration and Reloading the Device 200

Verifying Your Configuration 200

Summary 213

Exam Essentials 214

Written Lab 217

Review Questions 218

Chapter 7 Managing a Cisco Internetwork 223

The Internal Components of a Cisco Router and Switch 224

The Router and Switch Boot Sequence 225

Backing Up and Restoring the Cisco Configuration 226

Backing Up the Cisco Configuration 227

Restoring the Cisco Configuration 229

Erasing the Configuration 230

Configuring DHCP 230

DHCP Relay 232

Verifying DHCP on Cisco IOS 233

Using Telnet 233

Telnetting into Multiple Devices Simultaneously 235

Checking Telnet Connections 236

Checking Telnet Users 236

Closing Telnet Sessions 236

Resolving Hostnames 237

Building a Host Table 237

Using DNS to Resolve Names 239

Checking Network Connectivity and Troubleshooting 241

Using the ping Command 241

Using the traceroute Command 242

Debugging 243

Using the show processes Command 245

Summary 246

Exam Essentials 246

Written Labs 248

Written Lab 7.1: IOS Management 248

Written Lab 7.2: Router Memory 249

Review Questions 250

Chapter 8 Managing Cisco Devices 255

Managing the Configuration Register 256

Understanding the Configuration Register Bits 256

Checking the Current Configuration Register Value 258

Boot System Commands 259

Recove…