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: Option C

Solution(By Examveda Team)

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.