M.Sc

It depends on what your priorities are. If you want to start your career as a teacher then go for B.Ed first. Then you will be eligible for TGT posts. But if you want to continue into research field then you should opt for an M.Sc and then try for a Ph.D. All the best for your future endeavors!

I think you have to visit Arena Animation. Maybe they can provide you better guidance and Arena is also a very good academy.

Among your choices MBA abroad from USA/ UK/ Singapore/ Australia etc is the best option in terms of career opportunities and salaries.

M.Sc CS is better than MBA because you have a very good CS background and MBA is a management course.
So, M.Sc CS is good. Also, M.Sc CS offers very good career opportunities.

You need to appear for CAT, MAT, CMAT or PGCET exam after B.Sc to get admission in a college for MBA. Try to score good marks in CAT exam to get admission in one of the top B-schools.
If you have work experience, then it will work as an added advantage.

Hi,
For all countries abroad you require GRE and TOEFL score for MS degree.
There are a lot of courses in Germany which are in English language. Please check on masterportal.com

Admission at both is based on JEE Mains and the seats at IIST are just 20. Take a look at for all requirements
https://www.iist.ac.in/admissions/undergraduate
You can try for IISER/ NISER for an integrated degree.