The interview was in my college .There were three rounds .First was aptitude test which was conducted by Amcat . The test was average in its difficulty level. The 2nd round was technical interview .The interview was good .The interviewer asked me about project and I explained him my project about 10 to 15 mins in details then he asked me 2 to 3 more technical questions . I had cleared the technical round after that there was HR round . The HR round is just for formality you are already selected through technical round .They just check your english speaking skills . Overall the interview process is not so difficult for cognizant.