CDS exam is conducted by UPSC every year twice to take qualified students into different defense service like Indian Air Force,Indian Navy and Indian Army.
Eligibility criteria for CDS exam:
For Indian Army:
You should have complete graduation degree with any stream from a recognized university.
And your age should be between 19 to 24 years.
For Indian Air Force:
You should have complete graduation degree in engineering from a recognized university.
And your age should be between 19 to 23 years.
For Indian Navy:
You should have complete graduation degree in Engineering from a recognized university.
And your age should be between 19 to 22 years.
If you fulfill with any one criteria,then you can appear for this CDS exam.
CDS-I exam notification released on 29th Oct 2011 and closes on 28th Nov 2011.And this exam will held on 12th Feb 2012.
CDS-II exam notification will release on 2nd June 2012 and closes on 2nd July 2012.And this exam will held on 16th Sept 2012.
Visit official website for more details.
http://www.upsc.gov.in