kb/data/developer.mozilla.org/en-US/docs/Glossary/Protocol-0.md

title	chunk	source	category	tags	date_saved	instance
Protocol - Glossary | MDN	1/3	https://developer.mozilla.org/en-US/docs/Glossary/Protocol	reference	web, html, css, javascript, documentation	2026-05-05T05:41:12.570273+00:00	kb-cron

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1. Glossary
2. Protocol

Protocol

A protocol is a system of rules that define how data is exchanged within or between computers. Communications between devices require that the devices agree on the format of the data that is being exchanged. The set of rules that defines a format is called a protocol.

In this article

• See also

See also

• Communications protocol on Wikipedia
• RFC Official Internet Protocol Standards
• HTTP overview
• Related glossary terms:
  • TCP
  • Packet