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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 is a philosophy of network communication, not a specific protocol. The protocol used by the Internet is called TCP/IP. The TCP/IP protocol is due to Robert Kahn and Vint Cerf. The IP in TCP/IP stands for Internet protocol and is the protocol used by computers to communicate with each other on the Internet. Computers using the Internet must have IP software. Packets that follow the IP specification are called IP datagrams. These datagrams have two parts: header information and data.