DGCA EXAMS VAILDITY

So what actually happens when your DGCA exam validity expires? Do you have to give them again if don't have license yet, or once you become a pilot you don't give them at all , I know you need to give ATPL but do I have to give ATPL exams in the that 5 year time frame? I have been curious about this for a long time but so far haven't found any definitive answers