The POP protocol

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Autores	Pierre-Yves Haubruge
Prazo de entrega	Sem prazo
Limite de submissão	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.

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Questão 1: The POP states

Which are the three states defined in the POP protocol ?

Authentification, Transfer and Terminating states

Connecting, Session and Deconnecting states

Authorization, Session and Terminating states

Authentication, Session and Closing states

Authorization, Transaction and Update states

Questão 2: POP transport protocol

Which transport protocol is used by the POP protocol ?

HTTP

TCP

UDP

QUIC

Questão 3: The authorization state

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

USER

PASS

QUIT

RSET

Questão 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 Authorization state.

It terminates the session in the Authorization and Update state.

It terminates the session only in the Transaction state.

It terminates the session in the Authorization and Transaction state.

It always terminates the session.

It terminates the session only in the Update state.

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The POP protocol Collapse context

Questão 1: The POP states

Questão 2: POP transport protocol

Questão 3: The authorization state

Questão 4: The QUIT command

The POP protocol