two rounds were there written test and interview .

tell me about urself
do u have passport,if u r asked to go anywhere in india then will u be able to go.
what is the thing that motivates u most and one that makes u feel frustrated.
ur hobbis strength and weaknees

for such there is no need to prepare for interview as such.but aptitude should be good.

305 got selected and then on next day 265 got the offer letter.