MCA

You must do basic certifications like CCNA and Red Hat certifications. You can probably prefer to do MCA. This can give you better opportunities in the market being a Masters graduate.

It depends on what have you done in Bachelors degree and what was your stream in school?
Assuming you go for MCA, you should not target CCNA as it is the most basic level of certification. You will not gain any price in the market. If you look for CCNP, then it is a real game in knowledge and job. You will get better job, work, and salary. CCIE is the top class certification among all.

I don't think there is any MCA degree abroad. This notation is used in India. If you are interested for MS in computer sciences and related field, you can check:
1. RMIT.
2. University Technology Sydney.
3. QUT.
4. University of Waterloo.
5. University of British Columbia and
6. University of Toronto.

MCA has nothing to do with banking at all. How come you do MCA when you want to get into banking? But its not too late, kindly go for MBA in banking, POs or any other specialized officer exams.

Lower ranked MCA colleges and open universities do not have facility of campus placement. Majority of fresher computer graduate hiring by Indian IT companies and MNC is through campus placement. It is difficult to get good job if you do not get selected in campus placement after or during MCA degree course.

If you do MCA from a prestigious college which is visited by top IT companies for campus placement in last 5 years then you have good chances to get a job else you may face challenges. It is difficult to get job directly as a fresher particularly for those who do MCA from lower ranked colleges with campus placement facility.