CDS 2 2022 Maths Answer Key For All Set (A, B, C, D) The Union Public Service Commission administers the Combined Defense Service test. It is a twice-yearly nationwide examination. This exam is administered by the commission for recruitment to the Indian Military Academy, Indian Naval Academy, Air Force Academy, and Officer Training Academy. The two steps of recruiting for these posts are a written exam and an SSB interview. Three disciplines make up the written exam: English, Math, and General Knowledge. Click Here: Download Answer Key of NDA and CDS 2 2022 The Combined Defence Services test has two parts: