BCA

Delhi University does not offers BCA and B.Sc (IT) courses. The DU offers B.Sc (Hons) Computer Science course. The eligibility criteria of B.Sc. (Hons) Computer Science of DU's is given below. An aggregate of 60% or more marks in English, Mathematics and best of the two subjects from Physics, Chemistry, Computer Science/Informatics Practices
or
An aggregate of 60% or more marks in English, Mathematics and two subjects (other than Physics, Chemistry, Computer Science/Informatics Practices) from List B with a deduction of 1% per subject in the aggregate. Additional eligibility criteria : 60% or more marks in Mathematics.

The best way to go for cyber security is to do B.Tech in CSE.

You should have secured a minimum aggregate of 70% to stand eligible for the BCA programme.

Yes, you can do it.

Your PCM marks are good enough for this college for BCA admission. Please ask for college directly through admission inquiry available on the college website home page.

After class 12th Commerce, you can take BCA provided you have taken Maths as a subject in the class 12th commerce level.

I suggest you to take a good psychometric test, which will help you know your strengths and the inclination and aptitude for a particular career option.

I would suggest you to rethink on your decision. What makes you interested in Political Science after BCA. I feel, you should think about getting employable rather than getting qualifications. Still if you wish to diversify, then go for M.A. Political Science directly based on BCA.

Yes, you can opt for BCA, however I would suggest BE in Computers instead of BCA.