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packet switching. n. A method of data transmission in which data is broken into small blocks that are transmitted over different channels and are reassembled into their original order at their destination.
Packet Switching. Packet switching is similar to message switching using short. messages. Any message exceeding a network-defined. maximum length is broken up into shorter units, known as. packets, for transmission; the packets, each with an. associated header, are then transmitted individually. through the network.