NVIDIA interview questions

NSCU hosts career fairs for every semester. NVIDIA hires only through career fairs. I went to that career fair and was happened to got interviewed.There was a big line and companies like these have more demand. There were different panels for different positions. I am interested in ASIC design engineering and applied to same. I was asked about my interests and was handed out a piece of paper which contained questions

No screening interview; if they like your online application they email you to schedule the phone technical interview (2-3 questions). The last question was difficult; it was on relatively advance topic related to the position that you applied. Th question was unexpected.