I was expecting very technical questions but did not get any questions i thought were hard. In retrospect, i think they expect you to be pretty smart after getting your mba from a top school. I think they were most interested in finding out if they liked you enough to work with you in a highly intense work environment where you are expected to do everything quickly and perfectly -- no fails allowed. Your resume and past experience is very important, you must have some solid accomplishments and prove it. Must be a quick thinker in the interview and don't show any weakness because this truly is a highly intense environment.