Ca final registration

HELLO! CAN ANYONE HELP ME OUT WITH THESE?(CA FINAL REGISTRATION)

1. WHAT IS CCT CERTIFICATE?

2. I CLEARED BOTH GROUPS OF IPCC IN TWO DIFFERENT ATTEMPTS. THEREFORE WHICH MARKSHEET SHOULD I UPLOAD?

3. IS THERE ANY SELF ATTESTATION IS REQUIRED FOR DOCUMENTS WHICH ARE TO BE UPLOADED?

4. WHAT CARDS DO IT ACCEPT FOR ONLINE PAYMENT?

THANKS IN ADVANCE!