Hello aspirant,

Yes, of course it is possible to pursue M.SC in Computer Science once you complete the B.SC in IT. For that, you need to completed your bachelor's degree with a minimum aggregate of 50% or more from a valid, recognized university. But instead of M.SC in Computer Science, since you're an IT student, so it is suggested for you to take MCA, as it will be much beneficial in your career growth. If you're planning to go for IT career, then you should definitely consider studying MCA. But, if you want to pursue M.SC in Computer Science, then you have to write the entrance test conducted by the university to get admission in M.SC.

Hope, this answer helps you.