Hi Aspirant,

NIOS  is the board of education under the Union Government of India which  is valid and equivalent to CBSE, ICSE and other State Boards. It works in phased manner to provide education at pre-degree level courses, secondary level and vocational training. NIOS is only authorized to provide education at secondary and senior secondary level but not for graduation and post graduation level. So, there is no such course to be provided by NIOS after graduation.

For more information you can refer the link below,

https://school.careers360.com/articles/nios-admission

Hope this helps.

Good luck!!