Kamran Mushtaq
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Networking

RFC

Added: June 19, 2026Nurtured: June 20, 2026

Definition

RFC (Request for Comments) is a series of formal documents published by the IETF (Internet Engineering Task Force) that define standards, protocols, and technical specifications for the Internet.

What Problem It Solves

It provides a public, standardized reference for how internet protocols should work so that engineers and companies can implement systems in a consistent and interoperable way.

What Happens If Not Used

Without RFCs, there would be no official reference for internet protocols, leading to inconsistent implementations and devices that cannot properly communicate across networks.

Easy Wording

RFC is like an official instruction document that tells how internet rules and protocols should work.

Layman Example

It’s like a government publishing official traffic rules so everyone follows the same driving system instead of making their own rules.

Technical Example

  • RFCs are published by the IETF and are publicly accessible documents.
  • Each RFC defines or describes a protocol or standard.
  • Example:
  • RFC 791 defines the Internet Protocol (IP), which explains how packets are addressed and routed across networks.
  • Other RFCs define TCP, UDP, DNS, HTTP, etc.