Government & Defence Entrance Exam

National security guard (NSG) is an organization that accept highly skilled and motivated individuals. It's functions are to give VIP protection, terrorism counter, hijack, piracy neutralization among other operations.
To join NSG=complete the graduation level and join in India's defense force.
-It is a government agency, so it does not train, but the candidate should be a soldier or a member/trainee of the government agency in order to be eligible to join NSG. -you can join special action group (sag) or special rangers group (SRG) =both are the division of NSG. -ranks in NSG position=JR. Commissioned officer to team leader
-age limit=before 30 years. –It is a 2 years (minimum) of service.
-should not have red-ink entry, -no criminal record, -no punishment record.

Hello Shivam,
About CAT & UPSC -
CAT stands for Common Admission Test and is basically for the management degree. UPSC stands for Union Public Service Commission is India's central agency authorized to conduct the Civil Services Examination, Indian Forest Service examination, Engineering Services Examination, Combined Defence Services Examination, National Defence Academy Examination, Naval Academy Examination, Combined Medical Services Examination, Special Class Railway Apprentice, Indian Economic Service/Indian Statistical Service Examination, Combined Geo-scientist and Geologist Examination, and Central Armed Police Forces (Assistant Commandant) Examination. For these courses, first complete your Bachelor's Degree, only then you are eligible for UPSC / IAS exams or for MBA.