Got a PE interview, what to expect?

I have an interview with the employer soon of a small/middle PE firm for an associate position that focuses on procurement management of the portfolio companies. It’s not a transactional role, but still very analytical. What kind of questions should I expect? Maybe a better question, what’s the best way to answer the tough ones? I’ve done a couple of HR ones, pretty basic boiler plate Q’s so far.

Thanks as always. smiley

So what exactly will you be doing?