312-50V10 · Question #650
Which of the following represents the initial two commands that an IRC client sends to join an IRC network?
The correct answer is A. USER, NICK. IRC connection registration requires the client to send USER and NICK as the two fundamental initial commands to identify itself to the server.
Question
Which of the following represents the initial two commands that an IRC client sends to join an IRC network?
Options
- AUSER, NICK
- BLOGIN, NICK
- CUSER, PASS
- DLOGIN, USER
How the community answered
(46 responses)- A89% (41)
- B2% (1)
- C7% (3)
- D2% (1)
Why each option
IRC connection registration requires the client to send USER and NICK as the two fundamental initial commands to identify itself to the server.
According to IRC protocol (RFC 1459), a client must send the NICK command to set a nickname and the USER command to provide username and real name information during connection registration. These are the two mandatory commands required before a client is considered registered on the IRC network.
LOGIN is not a valid IRC protocol command - IRC does not use a LOGIN command for initial connection registration.
PASS is an optional IRC command used only when a server password is required and is not one of the two standard mandatory initial registration commands.
LOGIN is not a valid IRC protocol command, making this option incorrect regardless of the second command listed.
Concept tested: IRC protocol connection registration commands
Source: https://www.rfc-editor.org/rfc/rfc1459#section-4.1
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