Based on their performance in the Union Public Service Commission's (UPSC) Civil Services Test, a national exam, candidates for the All India Service are chosen. Preliminary tests, descriptive major exams, and an interview round make up the exam. Applicants that succeed in all three phases will be given consideration for a variety of open positions.

One of the most prominent services is the Indian Administrative Service. Every year, applicants from all across the nation apply to take this test, which is the most difficult in the entire nation.

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