[seanny]

Some servers sorta implement a bit of the two ideas, where you register in game but also type in your answer which is then checked by humans (ie. admins or "registrators" as one server called them), you write in the answer and if the person checking them accepted the answer, you were accepted. This was all done in-game.

This requires people in game to monitor the registration though (not a problem on active servers), so I would usually opt for a predefined quiz instead.