It took two days apti and interview.was easy to crack but could nt get required domain as per preference. Just have some unique skills as any conference paper or web r app development before entering your interview that would be great and you may convince them to put in a domain of your own. Even you get different domains try to be adaptable to the maximum to get a better progress. More than wat all you prepare ,most probably luck plays a vital role .because most of the questions will be shooted based on the interviewers domain