GATE | GATE-CS-2016 (Set 1) | Question 35

Which of the following is/are example(s) of stateful application layer protocols?

(i)  HTTP
(ii) FTP
(iii) TCP
(iv) POP3 

(A) (i) and (ii) only

(B) (ii) and (iii) only
(C) (ii) and (iv) only
(D) (iv) only


Answer: (C)

Explanation: In computing, a stateless protocol is a communications protocol that treats each request as an independent transaction that is unrelated to any previous request so that the communication consists of independent pairs of request and response.



Examples of stateless protocols (IP) and (HTTP)

Source: https://en.wikipedia.org/wiki/Stateless_protocol

TCP is stateful as it maintains connection information across multiple transfers, but TCP is not an application layer protocol.

Of the given protocols, only FTP and POP3 are stateful application layer protocols.
 

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