What is a communication protocol?

A communication protocol is indeed a set of rules that defines how data is transmitted over networks. This ensures that devices and systems can effectively communicate with each other by establishing a common understanding of the data format, order of messages, error handling, and other aspects of the communication process. For example, protocols like TCP/IP (Transmission Control Protocol/Internet Protocol) play a crucial role in enabling devices on the internet to connect and share information reliably.

Understanding communication protocols is fundamental for network engineering, software development, and cybersecurity, as it governs the exchange of data across different systems and applications. In contrast, the other options pertain to different aspects of computer science but do not define what a communication protocol entails.