Hi,

Since you were born on 14 October, 2003, you will be turning 19 soon. The eligibility criteria for the two concerned exam that you have mentioned are-

For CDS exam and its various posts, the usual age bracket is 19 to 25 years. Only graduate students can take CDS exam, hence after your graduation and drop year you will be able to appear for CDS and some of its specific posts.

There is no limit on number of attempts when it comes to CDS exam other than the age limit.

For SSC, the age criteria has been mentioned to be 18 to 32 year-old. Only graduate students can apply for this exam.

There is no limit on the number of attempts for a candidate.

These were the necessary points you should keep in mind while applying for the above mentioned exams.