Type of Connection
For communication occur, two devices must be connected in some way to the same link at the same time. There are two possible types of connection: 1) point-to-point connection, 2) multipoint connection.
Point-to-point
This type of connection provides a dedicated link between two devices. The entire capacity of the link is reserved for transmission between those two devices.Connection medium: cable, wire, microwave, satellite links.
Multipoint
A multipoint (multidrop) connection is one in which more than two specific devices share a single link. If several devices can use the link simultaneously, it is a spatially shared connection. If users must take turns, it is a timeshared connection.