Dear Student,
You're definitely not clear with your question as you haven't specifically mentioned the college you are asking for as the entrance procedure in BBA or BCA varies from college to college. In some there might be direct admissions while on in others it might be on the basis of your 12th percentage while in others the entrance might be the basis of admissions. Like for admissions in BBA Amity University has admissions on the basis of class 12th percentage while in Delhi University there's entrance DU JAT meant for it. So be specific the next time.
Hope this might help you.

Hello,
Yes some of the colleges conducts their own entrance exams in order to give admission into undergraduate courses like BBA and BCA while some of yhe colleges gives admission on the basis of class 12th board exams marks.
Good luck.