I applied through college or university. The process took 2 weeks. I interviewed at CSCI (New Delhi) in Nov 2009
Interview
Written test consists of maths and verbal paper. It was for 2 hours. There was a group disscussion after the written exam.
Selected students were invited for the group interview.
group interview was technical.
group interview lasted for about 45 minutes only.
Final round was 1 on 1 HR interview.