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2.1. TCP/IP Introduction
The two protocol components of TCP/IP deal with different aspects of computer networking. Internet Protocol, the "IP" of TCP/IP is a connectionless protocol which deals only with network packet routing using the IP Datagram as the basic unit of networking information. The IP Datagram consists of a header followed by a message. The Transmission Control Protocol is the "TCP" of TCP/IP and enables network hosts to establish connections which may be used to exchange data streams. TCP also guarantees that the data between connections is delivered and that it arrives at one network host in the same order as sent from another network host.