Chapter 3. Networking Devices

Objectives

1.6 Identify the purposes, features, and functions of the following network components:

• Hubs

• Switches

• Bridges

• Routers

• Gateways

• CSU/DSU (Channel Service Unit/Data Service Unit)

• NICs (Network Interface Card)

• ISDN (Integrated Services Digital Network) adapters

• WAPs (Wireless Access Point)

• Modems

• Transceivers (media converters)

• Firewalls

2.1 Identify a MAC (Media Access Control) address and its parts

What you need to know

• Describe how hubs and switches work

• Explain how hubs and switches can be connected to create larger networks

• Describe how bridges, routers, and gateways work

• Describe how routing protocols are used for dynamic routing

• Explain the purpose of other networking components such as Channel Service Unit/Digital Service Unit (CSU/DSU) and gateways

• Describe the purpose and function of network cards

• Describe how to identify a MAC address

• Understand the function of a transceiver

• Describe the purpose of a firewall