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Which of the following is/are example(s) of stateful application layer protocols? (i) HTTP (ii) FTP (iii) TCP (iv) POP3

1. (i) and (ii) only
2. (ii) and (iii) only
3. (ii) and (iv) only
4. (iv) only

Correct answer: (ii) and (iv) only

Solution

FTP and POP3 are considered stateful application layer protocols because they maintain session information and state across multiple requests, unlike HTTP, which is stateless.

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