I applied online through my university careers website. The interview was a phone screen for about 45 minutes. First question was a puzzle question. Then he asked an algorithmic question on linked lists. Final question was on Object oriented programming.
Interview questions [1]
Question 1
To find the minimum number of weighing required to find the lighter box among 8 boxes using a balance.
I applied at the college job fair. They assigned us several problems before receiving resumes. Common digital circuits questions like designing sequence detectors. The booth is small and crowded and noisy and it's a little challenge to answer those questions as quickly as you can do in an exam.
I applied through college or university. The process took 4 weeks. I interviewed at NVIDIA (San Jose, CA) in Dec 2013
Interview
3 rounds of phone interviews plus 2 rounds of small coding assignments. All are very technical questions, regarding to general data structure and algorithms questions, and knowledge problems related to CUDA