Cognizant Engineer Trainee IT/IS interview questions

The interview process started from 11 am whereas we were asked to reach the place by 9 am. All our documents were submitted for verification & based on the submission we were called for GD, each group had 10-12 members. We were asked to talk about the given topic & almost everyone had spoken about it. But only 2 of us were selected, me & another girl. & about 40-50 people were selected from GD out of 120 or more. Then there was a Technical Round where the interviewer asked about my College project, Linked List, some basic computer algorithm. I was selected. & then there was 3 HR rounds (I've never seen so many HR interview rounds). Anyways the process took 1 day & I was selected. My advice will be be confident & always keep a smiling face.