Posts Tagged ‘70-221’

Routers are hardware or software devices that are used to route data from a local area network to a different network. Routers are responsible for making decisions about which of several paths network traffic will follow to transfer the data packets. If more than one path is available to transmit data, the router determines which path is the best path to route the information. Routers also act as protocol translators and bind dissimilar networks. Routers limit physical broadcast traffic, as they operate at layer 3 (Network layer) of the OSI reference model. Routers also organize addresses into classes, which are used to determine how to move packets from one network to another. Routers ensure communication between devices on different network segments by forwarding packets between network segments.