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4 The Internet

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4 The Internet

The Internet is a network that establishes an integrated connection between the networks that are interspersed across the world. Therefore, it is also called the network of networks.

4 - 1 TCP/IP Protocol

TCP/IP is the standard protocol of the Internet. The relatively simple configuration as compared with the OSI basic reference model is also considered to have become the indirect cause of the evolution of the Internet. In TCP/IP, data is transmitted by appending the management information of each layer as a header to the packets to be sent. The role of each layer in connection-oriented communication using TCP and the typical management information that is included in each header are as shown below.