Distance/Correspondence

Mumbai University Eligibility Criteria for Ph.D:
A candidate should fulfill any of the following criterion in order to apply for Ph.D research programme at Mumbai University:
1. Candidates should hold Masters Degree/ M.Phil Degree in relevant discipline from a recognised university with minimum 55% ma

Yes, you can do a Diploma from distance education. You are eligible for that. Good luck.

Please go through the link:
https://www.shiksha.com/distance-mba-pgdm-chp

Yes, it is possible to pursue CS along with B.Com, because the subjects in CS are very much similar to the B.Com subjects and the exam level is very much easy in comparison with the professional exam. You can easily clear the B.Com Exams.

Your profile is not very suitable for an MBA from University of Alberta. However there is no harm in trying. Do you have any work experience? If yes, then highlight that in your resume/SoP.

The distance education is centrally managed by Delhi University as well as Mumbai University. They have a separate entity known as department or institute of Distance Education and Open Learning. The colleges that are affiliated to these universities do not offer distance learning on their own.