"Link: https://www.cheggindia.com/career-guidance/crack-ias-exam-with-one-year-...
UPSC, the notion that it is the toughest examination of all. The Civil Services Examination (CSE) is a national competitive examination in India. It is conducted by the Union Public Service Commission to recruit candidates for higher Civil Services of the Indian Government. It includes the Indian Administrative Service (IAS), Indian Foreign Service (IFS), and Indian Police Service (IPS)."