NDA Full Form – What is NDA Exam? The NDA exam is one of the toughest and most prestigious exams in India, testing academics, personality, fitness, and leadership. The NDA/NA Exam is conducted by the UPSC twice every year to recruit cadets for: National Defence Academy (NDA), Khadakwasla and Indian Naval Academy (INA), Ezhimala. NDA stands for National Defence Academy, India's top military training institution. It offers a joint training program for future officers of the Army, Navy, and Air Force. Candidates are selected via the UPSC examination, followed by SSB interviews and medical fitness rounds. But what is the full form of NDA ? The full form of the NDA exam is the National Defence Academy and Naval Academy Examination. Candidates attempting the UPSC NDA exam must be acquainted with all of the important details pertaining to the exam, such as the NDA syllabus, the exam pattern, the cutoff and the selection process before applying. An NDA or non-disclosure agreement is a binding contract between two or more parties that prevents sensitive information from being shared with others.