7 rounds of interview including group discussion , technical aptitude, general aptitude, communication round , 2 technical face to face and at last managerial round ... they select more candidates then dat of there requirement .if ur lucky u will get through it depends more on the interviewer's mood rather than wat u know ... if vacancy are done they will deliberately ask u random questions which has no connection with ur subject background neither is related to the job profile jst to eliminate they may ask u anything ....