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What part(s) of the OSI network model does the IETF primarily focus on for the development of standards?
Correct Answer: C
IETF's Focus: The Internet Engineering Task Force (IETF) primarily develops and standardizes internet protocols operating at the Network Layer (Layer 3) and above in the OSI model. Key Protocols: Some prominent IETF-developed protocols include: IP (Internet Protocol): Foundation of internet addressing and routing. TCP (Transmission Control Protocol): Reliable, connection-oriented data transport. UDP (User Datagram Protocol): Connectionless, best-effort data transport. DNS (Domain Name System): Translates domain names into IP addresses. HTTP (Hypertext Transfer Protocol): Web communication. References IETF Website: https://www.ietf.org/ OSI Model: https://en.wikipedia.org/wiki/OSI_model