assuming they had an understanding of how the server handles quests, yes. but none of it is information that isn't already readily available through a google search.
if you're referring to custom quests, then the player would have to have access to the quests folder on the server itself to sort out what is going on as none of it is stored locally by the client.
CORRECTION:
the server source itself doesn't actually contain ANY quests or even npc data. the quests are perl scripts (separate download than the source) that are accessed by the server and the data is something entirely different, but that's beyond the scope of your original question.
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