MCA

B.Sc (CS) is degree programme of three years but is also of four years in some universities. MCA is a post graduation course of two years duration. In all you can complete both the courses in 5 to 6 years duration.

No, MCA require 10+2+3 Bachelor degree with mathematics or equivalent and 60% aggregate marks for application for MCA. After that you have to pass an entrance exam PGCET, JECA, etc. after fulfill all criteria, you can get admission to MCA.

There is a lots of chance for white hacker. Cyber security is the most booming area nowadays. So, it is a better opportunity to start career. You can work as VAPT, participate in bug bounty, do CEH of entry level to pass for all. Side by side, you can complete your Master's degree.

In Pune, Arizona Infotech is a good institute for Security course like CEH, CHFI, ECSA, etc. There is no need but doing it is always better.

The top 10 MCA Colleges Bangalore 2016 are:
1. RV College of Engineering (RVCE)
2. MS Ramaiah Institute of Technology
3. Bangalore Institute of Technology
4. Christ University
5. Presidency College
6. Acharya Institute of Management and Sciences
7. Nitte Meenakshi Institute of Technology
8. Kristu Jayanti College
9. New Horizon College of Engineering
10. Dayananda Sagar College of Management and Information Technology

You can surely get admission in MCA if you clear the entrance exams. So, it would be great if you start preparing for it and once you complete your MCA getting a job would not be a difficult task.

Don't think that you got job and that is enough. Instead, you have a plus point that you are working even after graduation only.
Go for MCA (distance education or regular) + certifications to upgrade your skills so that you can achieve great height.