had three rounds of interview TR, MR and HR. once you clear the first two rounds then only you will get a call for the HR. then you can feel it as a clearing of TR and MR. only the things mentioned in resume will be asked. better to brush up all the things you mentioned in the resume. they would ask you to write some codes and approaches. HR would ask some typical questions. if everything goes fine then you are good to step into the firm.