What are LAN topologies?

Three common local area network topologies are star, ring and linear bus. Star network s would be one of the most common topologies. The simplest star network would consist of a central switch, hub or computer that will act as a conduit to transmit messages and any other computers in the network would be connected to that one main computer, and the transmission lines between them would form a graph with the topology of a star. A ring topology is when each of the nodes of the network are connected to two other nodes in the network and with the first and last nodes being connected to each other, that would form a ring. Any data that would be transmitted would travel from one node to the next until its destination has been reached. Data would usually flow in only one direction only. Linear bus topologies is a topology in which all of the nodes in a network are connected to a common transmission medium which has two end points( this is the bus, but is also known as the backbone) any data that is transferred between nodes in the network would be transmitted over this common transmission medium and is able to be received by all of the nodes in the network at the same time.