Hardware & Networking

You can do DCA without completing matriculation.
Good luck.

Yes, you can if you have passed class 12th in science.

NYIT is not a university but an institute. Usually, people prefer university education. However, if your grades are not very high or in case finances, time are issues, its not a bad idea to look at NYIT. It has global presence as campuses are located at various places. Placement is assisted but not guaranteed. For more details, check the link below :
https://studyabroad.shiksha.com/usa/universities/new-york-institute-of-technology.

In government organisations, they never hire directly. They hire from contractors and other companies. Contractors appoint their employees to government organisations. Many times government organisations takes their contractors and employees for their work on a fixed salary. Government. organisations hire IT engineer on based on their technical degree. They hire IT post employees on the basis of exam but they must have technical degree like B.Tech or BE, or BCA and MCA.

There is a vast scope in ethical hacking today and in future also due to high requirement of this quality to protect the data.

Dear,
Knowledge of programming language is very much important here because bugs in programming causes loop hole and makes the entire system compromised which is required to be detected and resolved.
Best wishes.

Direct admissions are possible through quota, but they are quite expensive and the college may demand huge donations for admission.

Yes, you can do it.

Normally, the ethical hacking course fee is 25000 to 30000 per month and this course normally is for 5 to 6 months. And this course gives very give opportunities in government and private sectors.