Hello Aspirant ,

If you want to become an IT engineer you will have to give engineering entrance exam for admission in colleges , there are so many entrance exams conducted at national , state , college level ,the most famous among all of them is JEE(Joint Entrance Examination ) Mains /Advanced  other exams are BITSAT , WBJEE ,OJEE ,VITEEE etc.

After clearing JEE mains you will be eligible for NITs , IIITs(not IIT) ,and most of the engineering colleges in India  and JEE advanced for admission in IITs .

Hope this helps.