Dear, there are two option first is - if you want to take IITs, NITs and other govt. colleges and you should give JEE exam and get good scores, on the basis of your marks in jee you get admission in the IT stream in very good colleges.

Another option is - if you want to take admission in some private university like Lovely Professional University, Chandigarh University, Amity, Sharda, KIIT, SRM, VIT, BITS you have to give its own entrance exam.

All the best dear