Unlike star or mesh topology, a bus topology is a multi-point connection between the nodes or devices on the network. A long cable works as backbone of the network. All the different nodes in the network connects at different points on the main cable. A connection point in the main cable for a node or device is the nearest point for the node.
Star topology is one of the four basic topologies of network communication. In star topology, all network devices connects to a controller or hub. This controller or hub enables communication among the network devices. Devices does not connect directly to each other as in Mesh topology.
Mesh topology is one of the four basic topologies of network communication. This is a point-to-point connection. That means, each devices in the network connects to each other device directly. Mesh topology offers speedy connection between devices due to dedicated communication channel.