NVIDIA Software Engineer Intern interview questions

Applied via one of NVIDIA's research partners (I've sent my CV after my internship with recommendation letter from my mentor). Within 2 weeks they scheduled a phone interview with some manager who was very, very easy going person. I was given a "homework" - a simple assignment in C to do within 2 days. Just after they received my solution my second interview was scheduled (next week). This time I came across an even nicer person, a guy who had his interns last year and got hired after that. I was asked some technical questions, really easy ones and we spoke much about my project (he even ofered some help with that!). I'm so excited I got hired, because guys at NVIDIA seem to be very clever, yet easy going and friendly.