Protocols define rules for communication between devices from "summary" of Data Communications and Networking by Behrouz A. Forouzan
The establishment of rules for communication between devices is a crucial aspect of data communications. These rules, known as protocols, govern how data is exchanged between devices in a network. Without protocols, devices would not be able to understand each other's signals, leading to communication failures. Protocols define various aspects of communication, including the format of data, the timing of transmission, and error detection and correction methods. By following these rules, devices can ensure that data is transmitted accurately and efficiently. For example, protocols dictate the order in which bits are transmitted, ensuring that data is received in the correct sequence. In addition to defin...
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