Packet Switching
Definition: A technique that enables digitised data to be chopped up into a number of fixed-length units or packets - sometimes called datagrams - and sent out over various routes on a network to their location. The beauty of packet switching is that it does not require a dedicated line - a continuous open connection between sender and receiver, unlike the circuit switching used in analog phone networks. It allows the packets to separate during their transmision, ensuring that each packet travels the quickest available route. The receiving station then ensures that all units are received and are in proper sequence before forwarding the data to the addressee. Packet switching is an essential technology of today's Internet, and wireless packet switching will remain an essential technology of tomorrow's mobile Internet.
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