RING Topology

It is called ring topology because it forms a ring as each computer is connected to another computer, with the last one connected to the first. Exactly two neighbours for each device.

BUS Topology

Bus topology is a network type in where every computer and network device is connected to single cable

STAR Topology

In this type of topology all the computers are connected to a single hub through a cable. This hub is the central node and all others nodes are connected to the central node
Network Topologies Bus,Ring, Star Mesh