I applied through college or university. The process took 1 day. I interviewed at Cognizant
Interview
They had a paper-pen aptitude test. After that there were 2 rounds of interviews. The interview was mainly in testing your problem solving abilities and attitude. One panel asked small puzzles which you can find easily on the internet. I think i got selected because i was very enthusiastic during the interview (unlike other job interviews i attended where i was very passive).
Interview questions [1]
Question 1
There was a puzzle about how to get all the calender dates using a dice.what numbers to have on a pair of dice. search it online.