There were 4 rounds- Aptitude, GD, Technical Interview, HR Round.
Aptitude-
It was an eLitmus test, 4 sections. English questions were pretty trivial. Quantitative and logical aptitude needs practice for solving.
GD-
Just talk fluently,confidently and try not to stammer. Most of us made it through this round.
Technical-
Questions based on resume. Version number of any programming language or technology mentioned. Questions on C,C++ and DBMS. Writing simple programs.
HR-
Questions on CGI Company. All the frequently asked HR questions.