The logical and physical collection of computer in a network is called topology .Topology means now a days physical topology .
Classifications are :
a. Bus topology
b. Ring topology
c. Star topology
d. Tree topology
e. Mesh topology
f. Hybridge topology
Bus
In a bus topology all computers are connected to a central cable called bus or backbone.
Star
A star topology is intended with each node (file server, workstations, and peripherals) connected straightforwardly to a central network Devices. Data on a star network passes through the network Devices before continuing to its destination. The network Devices manages and controls all functions of the network. It also acts as a repeater for the data flow. This configuration is common with twisted pair cable. Though, it can also be used with coaxial cable or fiber optic cable
Ring
A ring topology may show to be the same as a star topology. on the inside, the MAU (multistation access unit) of a ring contains wiring that allows information to pass from one device to another in a circle or ring . The Token Ring protocol uses a ring topology.
Tree
A tree topology is the combination of characteristics of linear bus and star topologies. It consists of groups of star-configured workstations linked to a linear bus backbone cable. Tree topologies permit for the extension of an existing network, and enable to configure a network to meet their needs.
