No, you should go for m.sc in computer science. For gate exam only those students can apply who have done four years b.sc degree.

Hi Surya,

Yes there is GATE paper for computer science. Here is the pattern of that :

The GATE CSE paper would contain 25 questions carrying 1-mark each (sub-total 25 marks) and 30 questions carrying 2-marks each (sub-total 60 marks). The question paper will consist of questions of multiple choice and numerical answer type. For numerical answer questions, choices will not be given. Candidates have to enter the answer (which will be a real number, signed or unsigned, e.g., 25.06, -25.06, 25, -25 etc.). The paper will also have 15 marks for questions on General Aptitude.

Hope this help you.