Hello!

MAT is conducted 4 times in a year. February, May, September and December. The main scores that are accepted are of feb & dec. Mat is conducted in two types: CBT & PBT.

CBT means computer based test, which means you need to give your exam like any other mba exam on computer.

PBT means paper based test i.e. you need to mark your answers on omr sheets.

You can give either of the two in an attempt or both too.

For more info visit:

https://www.aima.in/testing-services/mat/mat.html

I hope this helps.