Certification

Hi,
CCNA and CCNP courses are relating to Network administration and manage. Whereas, CCIE is purely security oriented course. As far as benefit is concerned, all of these courses are in demand but CCIE has got better prospects.
From my practical experience, if you want to settle your career as a security professional still you need to have some knowledge of networking. Hence, I would suggest to go for CCNA first, you may move on CCIE.

You can go for introductory computer science courses for better understanding in future.

Hi,
Pearl Academy is one of the best institute in New Delhi for Diploma courses in fashion merchandising.
All the best.

To be honest, there are no good institutes in Nagpur which can train you to become a good photographer. However, if you wish to relocate then the top colleges from where you can learn photography are mentioned below:
https://www.shiksha.com/top-10-colleges-for-photography-courses-in-india-article-11445-1

Habibs Hair Academy is the best institute if you wish to become a hair stylist as Jaweb Habib is not only a renowned name but will also help you get many opportunities after completing the course.

If you are picked up in campus placement by Indian IT companies with Remote Infrastructure Management vertical, you may able to work as Network engineer without certification based on your B.Tech CSE degree but finding NE job directly without certifications may be difficult. It will be good to seek network certifications for your long term career growth in industry.