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312-50V13 · Question #104
312-50V13 Question #104: Real Exam Question with Answer & Explanation
The correct answer is A: USER, NICK. To join an IRC network, a client typically sends the NICK command to set its nickname, followed by the USER command to provide identifying user information.
Submitted by takeshi77· Mar 6, 2026Introduction to Ethical Hacking
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
Explanation
To join an IRC network, a client typically sends the NICK command to set its nickname, followed by the USER command to provide identifying user information.
Common mistakes.
- B. LOGIN is not a standard IRC command used for initial connection and identity establishment; NICK is correct, but the pairing is wrong.
- C. While PASS (password) can be sent if required by the server or user, it's not one of the two initial mandatory commands for identity, and NICK is a more fundamental second command than PASS.
- D. LOGIN is not an IRC command for initial connection, and while USER is correct, LOGIN is not.
Concept tested. IRC client initial connection commands
Reference. https://datatracker.ietf.org/doc/html/rfc1459#section-4.1.2
Topics
#IRC protocol#network protocols#client registration
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