The toughest among all the government jobs will be Union Public Service Commission or UPSC. It stands first on the list. The exams for this are held to choose candidates for top administrative jobs in the Central Government of India. The candidate needs to possess a high degree of seriousness, devotion, determination, and strenuous effort to succeed in the four-tier exam, consisting of the preliminary exam, the main exam, the personality test, and the interview. The test covers many services, including IAS, IFS, and IPS.