Hardware & Networking

You can check here:
https://www.shiksha.com/it-software/networking-hardware-security/colleges/cyber-security-colleges-Maharashtra

No, you can learn it directly through any institute.

First of all, it's not easy to become an IAS officer. You need to crack UPSC which is very hard. Secondly, cyber security is not so easy. So, I would advice you to choose any one as your future. Now, IAS officer can't do other jobs while working as an IAS officer. Cyber security is a big concern nowadays and country like should focus on it. You have a good future in cyberspace but better to choose one option and focus on it.

Kindly visit this link:
https://www.shiksha.com/it-software/ai-robotics/colleges/colleges-india

Dear Akash,
Please refer the below link which is based on ranking, fee structure and placements. The student reviews are also available about the college to check about the college infrastructure and student life.
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/it-software/networking-hardware-security/colleges/cyber-security-colleges-tamil-nadu&ved=2ahUKEwj7spaP2YHjAhVDfisKHeSpA7cQFjAEegQIBRAC&usg=AOvVaw05BvLeY0_YaBxYWTkPZJhk

Dear Arindam,
Please check the below link for colleges for B.Sc. In Cyber Security and related studies in Kolkata. This will help you decide the college based on ranking, fee structure and reviews.
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/it-software/networking-hardware-security/colleges/cyber-security-colleges-kolkata&ved=2ahUKEwjqypeNyP_iAhXEiHAKHbzKBIcQFjAEegQIBBAB&usg=AOvVaw3c7yBebL4bO6Vcmw18YLnv