Hello student you need not to appear in any other examination apart from Jee main and Jee Advance.

Admission into NIT/IIIT /CFTIs and other private and government college is through Jee main entrance examination.

For admission into IIT Candidates need to appear and qualify Jee advance.

Admission is based on marks/rank obtained in Jee main and Jee Advance for NIT and IIT respectively.

Cut off vary every year on various factors like level of questions in the examination total number of aspirants and seats offered.

I request you to please help me with the college you're concerned about so that I can check and provide you the exact information about admission process and eligibility requirements.

Feel free to comment if you've any doubt

Good luck