Topology may be used as a term to describe geometric characteristics of the interconnection of points in two or three dimensional space. Network may be used as a term to describe the existence of a connection between various points, typically for the purpose of exchanging information. When these terms are combined, as in "network topology", the implication is to describe the geometric shape of the lines of communication, such as "ring" or "star." Learn about three important concepts that make up a connection typology: the network, the media and the protocol.