Cognizant visited my campus in the month of November 2020. There were total 3 rounds, first one is of aptitude+debbuging on amcat platform. After the first round 200 students from my campus selected for the second round. I was one of them. Second round was of technical interview . Interviewer was very friendly . He started with asking about mine favorite subject. I said DBMS and DS. Then he asked me about Types of normalization, views, procedures, indexing. After that he gave me one easy problem of aptitude. I answered all the questions. He seemed satisfied with my answers. Then we had a brief overview over all my projects and why I choose the mentioned stacks in the project.
After this round almost 50 students got selected for the HR round.
HR asked me some basic questions like why I want to join Cognizant etc.