CCNA Certification Study Guide Volume 1 - Donald Robb

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Résumé :

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