I applied through college or university. I interviewed at Cognizant (Chennai) in Mar 2015
Interview
2 Rounds basically :
In first round basics of OOPs and fundamental of programming
What ever written on your resume .Try not to fake anything in resume.
2nd Round :
Consist of HR/managerial Round ,where they will ask you about your background
Why cognizant ?
Good Experience.Lot of emphasis on written test aptitude and reasoning (verbal and nonverbal).Syllogisms, odd figure out, figure series,work and time,speed and distance.
Hr Round Good Communication and confidence.Three rounds- Written aptitude online, Technical, HR
I applied online. The process took 2 weeks. I interviewed at Cognizant (Chennai) in Aug 2014
Interview
interview was basically on engineering mini project and also what ever you mentioned in your resume.
First round will be technical and it is easy to crack and stick to your resume