There was one round for the Supernova Program (not sure if that was the case for previous years). The interviewers were friendly and patient. I received the results of the interviews after a week.
Interview questions [1]
Question 1
1. Past experiences and share about one of your more interesting projects
2. One mistake that you made and how did you overcome it
3. Data structures and algorithm questions
4. Random quiz questions on networks/operating systems/programming language implementations