In computer Terminology a network is defined as a group of integrated that shares services, data, Information and interact with each other by means of communicating link.
Network Transmission Medium Concept
Network thus requires at least two devices connected through a physical medium called as the transmission medium. A transmission medium determines the speed and connectivity of the network
Network Topologies Concept
Different network arrangement known as topologies
In another words schematic representation of the arrangement of the device a network is called network topology. There are five categories in there topologies
Bus
Star
Ring
Mesh
Cellular