UPSC NDA Previous Years Cut Off UPSC NDA Previous Years Cut Off : National Defence Academy also known as NDA is a Military Academy For Getting into Tri Services as a Commissioned Officer. To Get into NDA one has to Undergo 3 Steps:- Step 1-Written Exam Step 2-SSB Interview Step 3-Medicals The Individual who Clears all The 3 Stages get into National Defence Academy. All India Around 6 Lakh Students Appear For Written Exam of Which close to 10,000 Clear the Written Exam and Finally Till NDA only 450-500 Students make it up. The Process of NDA is so Rigorous