Hi John,

Besides MCA or other information technology jobs, there is most common and well known, Cyber Security jobs. They are small in number but have increasing demands. These jobs have high packages and good job profile. And if you're willing to make career can opt for the same.

Jobs in this area are:-
1. Network Security Engineers
2. Cyber Security Analyst
3. Security Architect
4. Cyber Security Manager
5. Cheif Information Security Officer(CISO)

Hello student,

Yes, you can go for the master degree in cyber security after completing your BCA ( Bachelors of computer administration).

On the other hand if you don't want to opt the master degree then you can go for some side course in cyber security either in some coaching institute or onilne. 

Hope it helps. 

Thank you  :)