Interviewed at one of prestigious NIT preceded by online aptitude test which was cleared by almost everyone at institute. At interview site, first round was pen paper test with four simple puzzles. Four correct answers fetched direct interview while three correct led to pen paper coding round. I got coding which was a simple hash code. Three rounds of interview followed with 2 technical rounds and one HR. Resume was discussed in detail. Interviewers were pretty cool and ask you about your interests and ask accordingly.