It was through reference, was off-campus held in wipro hyderabad, they conducted interview for almost 6000 people on the same day. there were three slots that day 8am, 11am 2pm. mine was 11 am batch. first round was aptitude, almost 2000 people in that slot, they have huge campus, conducted exam in cafeteria. in the 2000 people of my batch they divided us into 4 groups (500 in each group).aptitude questions were mixture of above average, and average questions. if one is reasonbly good at RS Agarwal, he can crack the exam.out my 500 in my batch they have selected 23. almost every batch they did pickup same number of people. next round was technical interview, my interview lasted for 45mins. he covered all the key subjects of computer science, and asked me write few programs, sql queries. in this process 3 out of 4 were sent to HR. HR was not so tuff, usual questions like tell about youself, why your percentages are degraded every year, what you did you do these many days etc etc . .finally after a week got offer letter home