Chapter 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:
Identify the purpose, features, and functions of the following network components:
Hubs
Switches
Bridges
Routers
Gateways
CSU/DSU
Network interface cards (NICs), ISDN adapters, and system area network cards
Wireless access points (WAPs)
Modems
A wide range of devices are used in modern networking. As a Network+ certified technician, you will need to have a good understanding of commonly used devices.
Given an example, identify a Media Access Control (MAC) address.
MAC addresses are the means by which systems communicate at a base level. As a network administrator, you will 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
Wireless Access Point (WAPs)
Modems
Modem Connection Speeds
Network Cards (NICs)
Types of Network Interfaces
Installing Network Cards
ISDN Terminal Adapters
System Area Network Cards
Network Devices Summary
Identifying MAC Addresses
Chapter Summary
Apply Your Knowledge
STUDY STRATEGIES
Read the objectives at the beginning of the chapter.
Study the information in this chapter, paying special attention to the tables, which summarize key information.
Review the objectives again.
Answer the exam questions at the end of the chapter and check your results.
Use the ExamGear test on the CD-ROM that accompanies this book to answer additional exam questions concerning this material.
Review the notes, tips, and exam tips in this chapter. Make sure you understand the information in the exam tips. If you don't understand the topic referenced in an exam tip, refer to the information in the chapter text and then read the exam tip again.