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.