well first of all there was a technical and aptitude online test in which technical was of all about basic of all subjects. after that there was a GD round in which group of 15 member was form. out of 15 member only 4 were selected in GD round. after GD there will be technical and HR interview. in technical round they just ask about resume and some basic question from the area of interest you mentioned. while in HR they just check your english ability and communication skill.