First round was written round which consists Aptitude, Verbal and a separate technical paper consist of MCQ questions based on data structures, C, Operating system, DBMS,network etc.
Second round was Face to face technical.
Third round was Technical Face to face.
Then HR which exactly took 40 minutes, may be just because I was the first in that round. Last round was a telephonic round with VP . But I got rejected after the HR round.