The NDA (1) 2021 exam is scheduled for 18th April 2021. Preparing for your NDA exam can be tough in a certain amount of time however with a proper approach and the right guidance you can excel in this exam. To crack the NDA exam, candidates put a lot of effort followed by dedication and various preparation strategies. Also, with the help of NDA courses and coaching's, candidates try to get an edge over other candidates as there is a lot of competition for this exam. However, one must understand that the most important aspect to clear your NDA exam easily is the reference books.