I applied through college or university. The process took 3 months. I interviewed at Cognizant (Chennai) in Jan 2011
Interview
Hired at Off campus interview. Simple and straight - you clear aptitude, might be bumped with GD, then a technical interview (is not a computer science graduate, don't worry they'll ask question only from resume). HR will be the last.
They are going to look for the attitude and when you are given a chance ask about mentorship programms and sporting spirit in cognizant. Mention that you know Cognizant take cricket seriously and add how about others?
I applied through other source. The process took 2 days. I interviewed at Cognizant (Chennai) in Mar 2014
Interview
I cleared AMCAT and got a direct call for the interview. My interview held at Galgotias college which is in Noida i.e greater noida. The interview was easy which included HR and technical interview.
I applied online. The process took 4 weeks. I interviewed at Cognizant (Chennai) in Jan 2010
Interview
Open aptitude test, then technical interview and personal interview. Background check and drug test. For a fresher, technical questions are from engineering subjects like Computer Architecture, Digital design and explanation about 4yr projects