Using one's initiative to be best placed for a job interview is commendable. Trying to find out what an exam question might be isn't a good idea.
One of the qualities any employer looks for is the ability to deal with the unexpected, the rush job etc. Even if you had sight of the paperwork in advance what would you do with it?
Just bone up best you can, answer honestly and be yourself. If you get it or not ask for feedback to help you adjust your approach for next time.
Lastly, what makes you want to cross to the "dark side"?
SGC