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Tác giả Pierre-Yves Haubruge
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The POP protocol

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.


Câu hỏi 1: The POP states

Which are the three states defined in the POP protocol ?

Câu hỏi 2: POP transport protocol

Which transport protocol is used by the POP protocol ?

Câu hỏi 3: The authorization state

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

Câu hỏi 4: The QUIT command

What is the effect of the QUIT command ?