It was campus interview. First there was an Amcat test with quant, verbal, logical, pseudocode programming and computer science theory questions: mainly with OS, DS, Algo questions. The difficulty was moderate.
A day later I was selected and a day after that, there was a technical interview. I had to wait for nearly 10 hours for my turn. The interview was challenging and had questions from almost all CS topics: OS, DS, DBMS, Algo, COA, S/w Engg, DCCN, C, C++, PHP, Python (both were mentioned in my resume). I answered most of them. The interviewer was helpful and friendly and offered candies and juice to me during the interview. I liked that. I was selected and Half an hour later was the HR interview. It had simple questions like: Introduce, Weakness, Work Under Pressure, Strategy, What you enjoy etc.