Introduction xxx Chapter 1 Networking Today 1 Objectives 1 Key Terms 1 Introduction (1.0) 3 Networks Affect Our Lives (1.1) 3 Networks Connect Us (1.1.1) 3 No Boundaries (1.1.3) 3 Network Components (1.2) 4 Host Roles (1.

2.1) 4 Peer-to-Peer (1.2.2) 5 End Devices (1.2.3) 6 Intermediary Devices (1.2.4) 6 Network Media (1.

2.5) 7 Network Representations and Topologies (1.3) 8 Network Representations (1.3.1) 8 Topology Diagrams (1.3.2) 10 Physical Topology Diagrams 10 Logical Topology Diagrams 10 Common Types of Networks (1.4) 11 Networks of Many Sizes (1.

4.1) 11 LANs and WANs (1.4.2) 12 LANs 13 WANs 14 The Internet (1.4.3) 15 Intranets and Extranets (1.4.4) 16 Internet Connections (1.

5) 17 Internet Access Technologies (1.5.1) 17 Home and Small Office Internet Connections (1.5.2) 18 Businesses Internet Connections (1.5.3) 19 The Converging Network (1.5.

4) 20 Reliable Networks (1.6) 23 Network Architecture (1.6.1) 23 Fault Tolerance (1.6.2) 24 Scalability (1.6.3) 24 Quality of Service (1.

6.4) 25 Network Security (1.6.5) 26 Network Trends (1.7) 27 Recent Trends (1.7.1) 28 Bring Your Own Device (BYOD) (1.7.

2) 28 Online Collaboration (1.7.3) 28 Video Communications (1.7.4) 29 Cloud Computing (1.7.6) 29 Technology Trends in the Home (1.7.

7) 31 Powerline Networking (1.7.8) 31 Wireless Broadband (1.7.9) 32 Wireless Internet Service Providers 32 Wireless Broadband Service 32 Network Security (1.8) 33 Security Threats (1.8.1) 33 Security Solutions (1.

8.2) 34 The IT Professional (1.9) 35 CCNA (1.9.1) 35 Networking Jobs (1.9.2) 36 Summary (1.10) 37 Networks Affect Our Lives 37 Network Components 37 Network Representations and Topologies 37 Common Types of Networks 37 Internet Connections 38 Reliable Networks 38 Network Trends 38 Network Security 39 The IT Professional 40 Practice 40 Check Your Understanding Questions 40 Chapter 2 Basic Switch and End Device Configuration 45 Objectives 45 Key Terms 45 Introduction (2.

0) 46 Cisco IOS Access (2.1) 46 Operating Systems (2.1.1) 46 GUI (2.1.2) 47 Purpose of an OS (2.1.3) 48 Access Methods (2.

1.4) 49 Terminal Emulation Programs (2.1.5) 50 IOS Navigation (2.2) 52 Primary Command Modes (2.2.1) 52 Configuration Mode and Subconfiguration Modes (2.2.

2) 53 Navigate Between IOS Modes (2.2.4) 54 A Note About Syntax Checker Activities (2.2.6) 55 The Command Structure (2.3) 56 Basic IOS Command Structure (2.3.1) 56 IOS Command Syntax Check (2.

3.2) 57 IOS Help Features (2.3.3) 58 Hot Keys and Shortcuts (2.3.5) 58 Basic Device Configuration (2.4) 61 Device Names (2.4.

1) 61 Password Guidelines (2.4.2) 62 Configure Passwords (2.4.3) 63 Encrypt Passwords (2.4.4) 64 Banner Messages (2.4.

5) 65 Save Configurations (2.5) 66 Configuration Files (2.5.1) 67 Alter the Running Configuration (2.5.2) 68 Capture Configuration to a Text File (2.5.4) 68 Ports and Addresses (2.

6) 71 IP Addresses (2.6.1) 71 Interfaces and Ports (2.6.2) 73 Configure IP Addressing (2.7) 74 Manual IP Address Configuration for End Devices (2.7.1) 75 Automatic IP Address Configuration for End Devices (2.

7.2) 76 Switch Virtual Interface Configuration (2.7.4) 77 Verify Connectivity (2.8) 78 Summary (2.9) 79 Cisco IOS Access 79 IOS Navigation 79 The Command Structure 79 Basic Device Configuration 79 Save Configurations 80 Ports and Addresses 80 Configure IP Addressing 80 Verify Connectivity 80 Practice 81 Check Your Understanding Questions 81 Chapter 3 Protocols and Models 85 Objectives 85 Key Terms 85 Introduction (3.0) 86 The Rules (3.1) 86 Communications Fundamentals (3.

1.2) 86 Communication Protocols (3.1.3) 87 Rule Establishment (3.1.4) 88 Network Protocol Requirements (3.1.5) 88 Message Encoding (3.

1.6) 89 Message Formatting and Encapsulation (3.1.7) 90 Message Size (3.1.8) 91 Message Timing (3.1.9) 92 Message Delivery Options (3.

1.10) 92 A Note About the Node Icon (3.1.11) 94 Protocols 94 Network Protocol Overview (3.2.1) 94 Network Protocol Functions (3.2.2) 95 Protocol Interaction (3.

2.3) 96 Protocol Suites (3.3) 97 Network Protocol Suites (3.3.1) 97 Evolution of Protocol Suites (3.3.2) 98 TCP/IP Protocol Example (3.3.

3) 99 TCP/IP Protocol Suite (3.3.4) 99 Application Layer 101 Transport Layer 102 Internet Layer 102 Network Access Layer 103 TCP/IP Communication Process (3.3.5) 103 Standards Organizations (3.4) 108 Open Standards (3.4.1) 108 Internet Standards (3.

4.2) 108 Electronic and Communications Standards (3.4.3) 111 Reference Models (3.5) 111 The Benefits of Using a Layered Model (3.5.1) 112 The OSI Reference Model (3.5.

2) 112 The TCP/IP Protocol Model (3.5.3) 114 OSI and TCP/IP Model Comparison (3.5.4) 115 Data Encapsulation (3.6) 116 Segmenting Messages (3.6.1) 116 Sequencing (3.

6.2) 118 Protocol Data Units (3.6.3) 118 Encapsulation Example (3.6.4) 120 De-encapsulation Example (3.6.5) 120 Data Access (3.

7) 121 Addresses (3.7.1) 121 Layer 3 Logical Address (3.7.2) 122 Devices on the Same Network (3.7.3) 123 Role of the Data Link Layer Addresses: Same IP Network (3.7.

4) 124 Devices on a Remote Network (3.7.5) 125 Role of the Network Layer Addresses (3.7.6) 125 Role of the Data Link Layer Addresses: Different IP Networks (3.7.7) 126 Data Link Addresses (3.7.

8) 127 Summary (3.8) 130 The Rules 130 Protocols 130 Protocol Suites 130 Standards Organizations 131 Reference Models 131 Data Encapsulation 132 Data Access 132 Practice 133 Check Your Understanding Questions 133 Chapter 4 Physical Layer 137 Objectives 137 Key Terms 137 Introduction (4.0) 138 Purpose of the Physical Layer (4.1) 138 The Physical Connection (4.1.1) 138 The Physical Layer (4.1.2) 139 Physical Layer Characteristics (4.

2) 141 Physical Layer Standards (4.2.1) 141 Physical Components (4.2.2) 142 Encoding (4.2.3) 142 Signaling (4.2.

4) 143 Bandwidth (4.2.5) 145 Bandwidth Terminology (4.2.6) 145 Latency 146 Throughput 146<.