Question

Which among the following protocols uses UDP as a transport layer protocol?
a. FTP b. SNMP c. SMTP d. TFTP e. HTTP

• A. b and d only
• B. a and d only
• C. a, b and d only
• D. c and d only

Hint:

Protocols like SNMP and TFTP use UDP due to their requirement for low-overhead communication, unlike FTP, SMTP, and HTTP, which require reliable data transfer provided by TCP.

Answer 1

The Correct Option is A

- FTP (File Transfer Protocol): FTP uses TCP as its transport layer protocol, not UDP.
- SNMP (Simple Network Management Protocol): SNMP uses UDP as its transport protocol, as it is designed for low-overhead, connectionless communication.
- SMTP (Simple Mail Transfer Protocol): SMTP uses TCP as its transport protocol, not UDP.
- TFTP (Trivial File Transfer Protocol): TFTP uses UDP as its transport protocol. It is a simpler version of FTP and uses UDP for quicker file transfers without error recovery.
- HTTP (Hypertext Transfer Protocol): HTTP uses TCP as its transport protocol, not UDP.
Therefore, the correct answer is 1. b and d only.