Hello Sir,

In order to get admission in IIA, there four exams, GATE, CSIR NET, JEST and IIAST. You actually 90% of marks in GATE exam. Students who qualified for JEST and CSIR NET can also apply for the university. Whereas, the IIAST is an exam conducted by IIA itself. If you get qualified for the IIAST exam, you need not qualify for the remaining exams. You will selected into the interview round.

Hope this might help you,

Good Luck, Thank you :)