What is the purpose of data communication? Explain the data communication system. The purpose of data communication is to share the data and information between two or more users through the medium of communication known as the physical layer to connect the users to each other. Users who can connect to the data communication model need to connect with the computer system, network device, cable and application software for making a model of data communication system. The data transmission in digital data communication is a term of transmission in three different types of mode : simplex mode of data transmission, half duplex mode of data transmission and full duplex mode of data transmission. The data communication model is mostly used for major communication systems in the digital term such as TCP/IP and OSI model for digital data communication systems. Where the TCP is used for providing the connection of four types of layer which is used to make data transmissions between two or more ...
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