Study Abroad

Yes. You should check the accreditation of the university. If you cannot find it, email them your query and ask what kind of certification do they have. A degree from the famous one, the known ones would generally be accepted in India. You can get checked the authenticity of the university from AIU.

Better to search in Google.

Yes you can get because it's a university so you can get placements.

Yes you can get but.

Yes I think so. Better to consult in any consultancies.

Yes it's possible. You can search about it in college websites.

DCA is a Diploma course made for Indian students only. There is no course like DCA in Canada.
Good luck.

Both the courses are almost same. But in my point of view, MCA will be a better option after BCA.
Good luck.