The POP protocol

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Author(s)	Pierre-Yves Haubruge
Deadline	No deadline
Submission limit	No limitation

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Before answering those questions please make sure you have read the section of the course book about the post office protocol AND the RFC 1939 which describes Post Office Protocol (POP). Remember that like in any webpage, you are able to search for specific information in an RFC using ctrl/cmd + F. The most important sections of the RFC for those answering those questions are the introduction and the sections about the states.

Paste this command into your terminal:

The password to connect is

Question 1: The POP states

Which are the three states defined in the POP protocol ?

Connecting, Session and Deconnecting states

Authentification, Transfer and Terminating states

Authorization, Transaction and Update states

Authentication, Session and Closing states

Authorization, Session and Terminating states

Question 2: POP transport protocol

Which transport protocol is used by the POP protocol ?

HTTP

QUIC

UDP

TCP

Question 3: The authorization state

Which command is NOT valid in the authorization state in POP protocol ?

RSET

PASS

USER

QUIT

Question 4: The QUIT command

What is the effect of the QUIT command ?

It terminates the session in the Transaction and Update state.

It terminates the session only in the Update state.

It terminates the session in the Authorization and Transaction state.

It terminates the session only in the Transaction state.

It terminates the session only in the Authorization state.

It always terminates the session.

It terminates the session in the Authorization and Update state.