Diploma

Yes, you're eligible for GATE. As long as your age is below 25, you also get to apply for the various PSU's via GATE. If not, then you can use the GATE score elsewhere to your advantage.

National Law University, Delhi, has announced a new course: PG Diploma in intellectual property rights and patent law.

You can refer to the below mentioned link:
http://goo.gl/dkzMBo

Yes, you can do CCNA certification course. If I talk about CCNA scope so after completing CCNA, you will get few benefits:
1. Importance for recruiters
2. Unique learning network
3. Knowledge plus experience
4. Good for career
5. Builds a base
6. Good for the employer
7. Proof of certification
To Know more