As an alternative to 2, you just got lucky. There's lots of interviewers and lots of questions. My office is smaller than MTV, though not by much, and I don't think I've seen the same question come up more than a handful of times.
I'm unclear if 1 is referring to a specific office pool, which would be weird, or the global knowledge base I mentioned, but that has lots of questions, more than one could hope to memorize in any reasonable time frame.