Graduate Aptitude Test in Engineering, commonly known as GATE, is the sole examination that leads to admission to these world-class institutions. GATE is one of the most competitive examinations in India.
Indian Engineering Services (IES) are the civil services that meet the technical and managerial functions of the Government of India. Recruitment is made on the basis of merit.
PSUs is an entity created by Government of India to undertake the commercial work under the banner of its own. These companies are less concerned with making profits, but more towards nation building and growing the country's economy.