Certificate

Yes, you can take admission as far as you are eligible in this.

That is something the college authorities may ask you at the time of admission.

Only if the option is there in digi locker to show the certificate. They might have removed it due to some technical issue.

No, NCC certificate is not necessary in AFCAT
NCC 'C' Certificate holders in age group 19-25 years are exempted from UPSC examination for commission though OTA (Officers Training Academy). In AFCAT there is no reservation for NCC but it looks good during interview IO would be impressed and will feel you are more interested in joining IAF.

You are going in right direction. MCSE+VMWARE and AWS Course are in demand in market.

Hi,
This is the eligibility for this course
Eligibility
Candidate who have passed either 10+2 from a recognised board or have passed Diploma after 10+2 or who have passed 10+2 with 1-2 years of work experience are eligible for the admission.

Please check that directly with the university. Yes many courses are approved but there are some that's not approved.

I am sharing url of the same from Shiksha itself. Please read it for more clarity about this course. Shiksha site has explained everything precisely about this course. https://www.shiksha.com/scjp-sun-certified-java-programmer-chp.

Yes, you can apply for B.Ed after PG too. B.Ed Course Eligibility:
A minimum aggregate score of 50% in graduation is a requisite for admission. A minimum aggregate score of 55% at post-graduate level is mandatory for admission into colleges for the B.Ed curriculum.