BCA

All the colleges that I know of don't provide lateral entry usually. There is this college that provides Lateral Entry https://www.shiksha.com/it-software/course/amp/b-c-a-lateral-entry-direct-2nd-year-directorate-of-distance-education-madurai-kamaraj-university-287511
But again. Check with the colle

The best option would be to join a coaching institute. They will tutor you accordingly and they will helo you to understand complex concepts while preparing. Be prepared to give your best and study your BCA course thoroughly too. Study at least 2 to 3 hours daily and solve practice papers.

Yes, you can get admission in MBA because your score is good and you have completed your Bachelor's degree. I think it's a good decision for your future.

Yes, you certainly can. All you need to do fill up the forms and start preparing for them. You can opt for IBPS and PO exams. Also, some banks recruit technical employees too. So keep an eye out for such vacancies.

CET is Common Entrance Test conducted in Karnataka for various streams. There is also MHD-CET that is conducted in Maharashtra for Polytechnics. One is also for Guru Gobind Singh Indraprastha University. This is the link for IPU CET.
https://www.shiksha.com/university/guru-gobind-singh-indraprastha-

Canada requires 10+2+4 then PG Diploma or Masters. As BCA is a three-year programme, you cannot do PG Diploma. You can do one-year graduate diploma and then do Masters.

Yes, you can if you have passed class 12th in science.

What do you want to ask?

No, it is not necessary to take computer as a subject for BCA as you will learn from basic itself from the very first year, but it is necessary to have some basic knowledge about what you are going to opt for.

Yes, but mathematics comes in 2nd sem in BCA.