Aptitude test consisted of maths, D.I, english. Then technical round followed by HR round.

Technical questions consisted of calculating output of c program, from my 3rd and 4th year project work, operating system, computer networking.

HR questions were like why i want to join TCS, do you have any girlfriend or not, some management questions

Have a good idea on your project work, be cool and calm during interview, and have good communication skill.

Firstly there was an aptitude test and then technical round followed by HR round.

110 got selected out of 140.
Luck, good percentage and my project work and the confidence worked a lot for me.