There was a written test which had two parts:- English and Maths(including reasoning). After that there were intrview rounds. The number of rounds were not fixed. Some had 1, some had even 3. Some had a group discussion round too.
The questions for the techincal round were from Operating system(Deadlock, File system, Linux), Database Management System(Normalization, Sql Queries), C(A program), Data Structure.
One should definitely read the project done. Also he/she should concentrate on his/her favorite subjects. Also DBMS, C and Data structure should be studied.