First round is written pen and paper consists of 30 objective type questions. Second round for shortlisted from above round is technical face to face interview (mostly with one of the managers over there). Third round is kind of HR round for the above shortlisted, here they are interested in some of the achievements, challenges you faced, your pros and cons, family background etc.... Suggestions: Be cool, rest they will take care of. Try to have more communication with the interviewers. In the written test attempt questions only if you are confident about it , getting 60% is a good score.