Thursday, 9 August 2012

CCNA (TCP/IP Question 16)

Which of the following are TCP/IP protocols used at the Application layer of the OSI model?

  1. IP
  2. TCP
  3. Telnet
  4. FTP
  5. TFTP

A. 1 and 3

B. 1, 3 and 5

C. 3, 4 and 5

D. All of the above

Answer & Explanation
Answer: Option C


Telnet, File Transfer Protocol (FTP), and Trivial FTP (TFTP) are all Application layer protocols. IP is a Network layer protocol. Transmission Control Protocol (TCP) is a Transport layer protocol.


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