A 2.1.3 Network Devices
A network is only as useful as the devices that move data through it. Each device on a network has one job: to connect devices, to direct traffic to the right place, or to protect the network from what should not get in. This page describes the function of the seven devices the syllabus names, then shows where each one sits on the four-layer TCP/IP model, because the layer a device works at is a clue to what it does....