Question

An SMTP session may not include _______

(a) zero SMTP transaction

(b) one SMTP transaction

(c) more than one SMTP transaction

(d) one HTTP transaction

This question was posed to me in an interview for job.

Question is from SMTP topic in chapter Application Layer of Computer Network

Answer 1

Right answer is (d) one HTTP transaction

To explain I would say: An SMTP session can only include SMTP transactions regardless the number. Any other protocol’s transaction is not included in an SMTP session.