CCNA (TCP/IP Question 16)

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

1. 
   
2. IP
3. TCP
4. Telnet
5. FTP
6. 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

Explanation:

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.

Posted in: