iNTERFACEWARE Software Developer interview questions

I was referred through a professor at my college. I spoke on the phone with someone and was given a small programming challenge. They also gave me a very difficult challenge if I wanted. They were very interested in me and seeing what I could do. I came in a week later for the interview. I succeeded at both challenges so they were satisfied with my abilities. We spent the rest of the time discussing the company and it's culture. They showed me what they were currently working on.