Connecting Network Nodes
Circuit is the pathway through which the messages travel (copper wire, fiber optic cable, wireless transmission)
Bridge is a device that connects two similar networks using the same data link and network protocols.
Gateway is a device that connects two dissimilar networks and allows two networks of different vendors to communicate by translating one vendor’s protocol into another.
Router is a device that connects two similar networks which have the same network protocol. It also chooses the best route between two networks when there are multiple paths between them.
Brouter is a device which combines the functions of a bridge and a router.
Repeater is a device used to boost the strength of a signal. Repeaters are spaced at intervals throughout the length of a communication circuit.