Information Technology

In order to pursue a science course at any of these colleges, they will have to appear for an entrance. Some popular B.Sc and M.Sc entrance exams that science aspirants should consider giving in order to secure admission in a good college. Are mentioned at the link provided below:
https://www.shiksha.com/science/articles/top-bsc-msc-entrance-exams-in-india-blogId-13484
Which course is better? The career opportunities for both these graduates are many. But most MNCs prefer MCA graduates to M.Sc graduates. This is because the MCA graduates are well aware of the software applications. But for developing new software, M.Sc graduates are preferred. MCAs are most suitable for the working purposes in various companies. While considering a bright career, MCA course will be better than M.Sc in computer science.
Regards.

You should pursue a course which you feel comfortable doing/studying, and where your interests lie. The career scope for students of IT is on the rise today. Employment opportunities that offer lucrative salaries are available to desirable candidates. The degree in B.Sc information technology serves as a very good base for students who wish to pursue their career or advanced studies in the field of information technology.
In comparison, if you pursue BCA you have a good chance of getting a job after the course, however, you will be in a lower pay grade. For better prospects, you might have to pursue an MCA. In my opinion, if computers is your strong point you should pursue BCA and if general science is your forte, pursue B.Sc. The choice is yours. Good luck!

It does not make much sense to do a BCA after you have completed a Diploma in architecture, unless you are interested in studying computer sciences and pursuing a career in the same field.
To improve your career prospects you need to study further either in your technical field or in a general area of study. If you wish to study further to improve your job prospects, then as a Diploma-holder, you can seek lateral entry to the second year of BE. Several engineering colleges offer this provision. You can pursue your Bachelors in architecture from Indian Institute of Architects (IIA) through correspondence. It conducts non-formal engineering education programs, successful completion of which is recognised as equivalent to a graduate degree in engineering. The Associate Membership of the Indian Institute of Architects (by examination) is at par with Bachelors Degree in Architecture of recognised Indian Universities as notified by the Government of India for the purpose of employment and services under Central government. In appropriate field.