MBA Entrance Exam

You can give MAH CET or GMAT for JBIMS.

As your question already states, you have a low CAT score and NMIMS is currently considering its own NMAT score for admissions. If your CAT score is low and you want to get admission in NMIMS I will suggest you to apply for NMIMS test and target a score of 210 or plus for admission in NMIMS.
Thank you,
I hope my answer will be helpful.

https://www.shiksha.com/college/ssr-institute-of-management-and-research-ssrimr-silvassa-47976/admission
Check here.

There are some colleges that take direct admissions. You need to check upon the admission process of the college you are targeting.

Dear aspirant
It's great connecting with you. Based on previous year cut-offs, I am providing you information regarding the colleges you have chances of getting seat. I am mentioning the list of good colleges, you have chances of getting seat with CMAT score of 155. But cut-offs may increase, decrease or may remain same this year.-Institute of Management Technology (IMT), Nagpur
-Acharya Bangalore Business School (ABBS), Bangalore
-National Institute of Agricultural Marketing, Jaipur
-IES Management College and Research Centre, Mumbai.

Hello Geeta,
On this website, you get all the material for CAT or other material for the MBA entrance test. It is a paid website.

Most of the colleges accept GMAT and some of them accept CAT. There is no prominent exam as these two.

Yes, Diploma students can appear for these exams.

Yes, you can pursue a regular and correpsondence degree together from different Universities in India. I will suggest you University School of Business (USB), Chandigarh University ranked among the Best Management Colleges in Punjab has earned recognition for its unique style of teaching & experiential learning. The attribute that makes learning business management exclusive at USB is its specialised approach paired with a research focus, innovation culture and entrepreneurship zeal backed by world-class facilities.

Chandigarh University has all the approval AIU association of Indian universities and Wes, UGC, AICTE, NAAC, etc. So your degree will be globally acceptable Chandigarh University Institute of Distance & Online Learning is recognized by the University Grants Commission (UGC), a statutory body of the Government of India established for the coordination, determination, and maintenance of standards of university education in India.