There is 2 round. First is Basic Round in which they ask all basic and cover most of topics related to technology.
In second round they ask question in advance.
Interview questions [1]
Question 1
About all concept of tech stack. Like Basic question of most of the concept in technology.
I applied online. The process took 2 days. I interviewed at Cognizant (Chennai) in Apr 2020
Interview
Good but please be prepared with core skills and questions are going to be very differently. So be strong with basics interviewer was good and comfortable.But project related questions are little less they are mostly interested in skills,
I applied through college or university. The process took 1 day. I interviewed at Cognizant (Kolkata) in Jun 2020
Interview
The interview process is pretty much based on what is written on your cv. You must be having deep knowledge of what you're putting in. Be gracious amd be confident about yourself .