A more thorough explanation:

A protocol is a set of rules that governs how data is treated and formatted in an electronic communications system. It can also refer to a summary document or meeting minutes that are initialed by the attendees to indicate their accuracy. Additionally, a protocol can be a set of rules that require strict adherence to proper manners and procedures, such as in diplomatic exchanges or military services.

• The Internet Protocol (IP) is a set of rules that governs how data is transmitted over the internet.
• After a meeting, the attendees may sign a protocol to confirm that the minutes accurately reflect what was discussed.
• In the military, soldiers must follow a strict protocol when handling classified information.

These examples illustrate how a protocol is a set of rules that dictate how things should be done in a particular context. Whether it's transmitting data over the internet, documenting meeting minutes, or handling classified information, protocols ensure that everyone follows the same rules and procedures to maintain accuracy, security, and efficiency.