BRIDGES
Bruidges, on the other hand, can extend the maximum size of a network. Allthough the bridged network looks much like earlier example of a network with a repeter,the bridges is a much more fllexible device. bridges operte at the MAC sublayer of the OSI Data Link Layer.
A repeter passes on all signals that it receives. Abridge, on the other hand, is more selective and passes only those signals targeted for a computer on the other side. A bridge can make this determination because each device on the network is identified by a unique physical address.
Each packet that is transmitted bears the address of the device to which it should be delivered.
Routers, Hubs, Repeaters, Bridges, Modems, Switches
