A 2.2.1 Network Topologies
A network topology is the arrangement of the devices in a network and the links between them. That arrangement is not just a picture: it decides how data moves, what happens when a cable or device fails, and how much the network costs to build and to grow. The syllabus names three topologies, star, mesh and hybrid. This page describes how each one works, gives a clear account of how each behaves on the five factors...