™ Link: connects adjacent nodes
Wires, Cables, Any thing that physically connects two nodes
™ Path: end-to-end route within a network
™ Circuit: the conduit over which data travels
™ Packetizing: dividing messages into fixed-length packets prior to transmission
over a network’s communication media
™ Routing: determining a message’s path from sending to receiving nodes
The transmission medium may itself be a network, so route needs to be specified .
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