Which concept refers to a set of rules for transmitting data between devices?

Protocols are fundamental concepts in the realm of data communication, as they define a set of standardized rules and conventions that govern how data is transmitted between devices. This includes aspects such as error handling, data compression, and synchronization, ensuring that devices can effectively communicate with each other despite potential differences in their hardware and software configurations.

Protocols can be specific to different types of communications. For example, the Transmission Control Protocol (TCP) is responsible for reliable transmission of data over a network, while the Internet Protocol (IP) handles addressing and routing. The existence of these protocols is crucial for the seamless operation of networks and the Internet, where diverse devices must communicate without ambiguity.

In contrast, while a firewall is a security tool designed to monitor and control incoming and outgoing network traffic based on predetermined security rules, it does not directly pertain to the standards of data transmission. Bandwidth refers to the maximum rate of data transfer across a network, indicating the capacity of a connection rather than the rules governing data transmission. Dynamic Host Configuration Protocol (DHCP) is specifically a protocol used for dynamic assignment of IP addresses to devices on a network, showcasing a specialized function rather than the broad concept of protocols themselves.