Networking Devices
CHAPTER 3
3
Networking Components and Devices
Objectives
This chapter covers the following CompTIA-specified objectives for the “Media and Topologies” and “Protocols and Standards” sections of the Network+ exam:
1.6 Identify the purpose, features, and functions of the following network components:
. Hubs . Switches . Bridges . Routers . Gateways . CSU/DSU . Network interface cards (NICs) . ISDN adapters . Wireless access points (WAPs) . Modems . Transceivers (media converters) . Firewalls . A wide range of devices is used in modern networking. As a Network+ certified technician, you need to have a good understanding of commonly used devices.
2.1 Identify a MAC (Media Access Control) address and its parts.
. MAC addresses are the means by which systems communicate at a base level. As a network administrator, you need to understand the purpose, function, and expression of MAC addresses.
Outline
Introduction Hubs Switches Switching Methods Working with Hubs and Switches Hub and Switch Ports Cables Connecting Hubs and Switches Hub and Switch Indicator Lights Rack-Mount, Stackable, and Freestanding Devices Managed Hubs and Switches Bridges Bridge Implementation Considerations Types of Bridges Routers Routable Protocols and Routing Protocols Routable Protocols Routing Protocols Dedicated Hardware Versus Server-Based Routers Gateways CSUs/DSUs Modems Modem Connection Speeds 120 121 123 125 Wireless Access Point (WAP) 126 126 127 129 129 129 Chapter Summary 130 131 132 133 134 134 136 139 140 141 142 143 Key Terms Apply Your Knowledge Exercises Exam Questions Answers to Exam Questions Suggested Readings and Resources 159 160 160 160 162 166 168 Transceivers Firewalls Network Devices Summary Identifying MAC Addresses 154 154 155 156 152 Network Interface Cards (NICs) Types of Network Interfaces Installing Network Cards ISDN Terminal Adapters 145 146 149 150
Study Strategies
. Review the purpose, function, and key characteristics of the various
3
Networking Components and Devices
Objectives
This chapter covers the following CompTIA-specified objectives for the “Media and Topologies” and “Protocols and Standards” sections of the Network+ exam:
1.6 Identify the purpose, features, and functions of the following network components:
. Hubs . Switches . Bridges . Routers . Gateways . CSU/DSU . Network interface cards (NICs) . ISDN adapters . Wireless access points (WAPs) . Modems . Transceivers (media converters) . Firewalls . A wide range of devices is used in modern networking. As a Network+ certified technician, you need to have a good understanding of commonly used devices.
2.1 Identify a MAC (Media Access Control) address and its parts.
. MAC addresses are the means by which systems communicate at a base level. As a network administrator, you need to understand the purpose, function, and expression of MAC addresses.
Outline
Introduction Hubs Switches Switching Methods Working with Hubs and Switches Hub and Switch Ports Cables Connecting Hubs and Switches Hub and Switch Indicator Lights Rack-Mount, Stackable, and Freestanding Devices Managed Hubs and Switches Bridges Bridge Implementation Considerations Types of Bridges Routers Routable Protocols and Routing Protocols Routable Protocols Routing Protocols Dedicated Hardware Versus Server-Based Routers Gateways CSUs/DSUs Modems Modem Connection Speeds 120 121 123 125 Wireless Access Point (WAP) 126 126 127 129 129 129 Chapter Summary 130 131 132 133 134 134 136 139 140 141 142 143 Key Terms Apply Your Knowledge Exercises Exam Questions Answers to Exam Questions Suggested Readings and Resources 159 160 160 160 162 166 168 Transceivers Firewalls Network Devices Summary Identifying MAC Addresses 154 154 155 156 152 Network Interface Cards (NICs) Types of Network Interfaces Installing Network Cards ISDN Terminal Adapters 145 146 149 150
Study Strategies
. Review the purpose, function, and key characteristics of the various