Hardware & Networking

There is no particular Undergraduate course in ethical hacking but there are large no of short term and long term courses.
Good Luck.

Please pursue law and do specialisation in cyber crime. This will surely help you. Prepare for CLAT exam to get a good college.

Computer Science is the best option in this line of your choice with specialized courses in internet security and more.

If you are from a science background and want your career in computer Science, please do B.Tech CS instead of B.Sc. Hons CS!
There is no value of B.Sc. Hons CS eventually you will have to do M.Sc. Or MCA. Companies prefer B.Tech students over B.Sc/BCA/MCA/M.Sc students. Even if you get a job, the package will be low. After B.Sc. You will not be eligible for GATE. Now, if you are from a commerce background then do BCA instead of B.Sc. CS as it will give you more practical knowledge!
All the best!

https://www.shiksha.com/it-software/cyber-security-chp
Use the link to know about the colleges offering the same course.
Good luck.

Some of BCA Specializations-
Computer Graphics
Programming Languages
Database Management
Systems Analysis.
Word Processing
Internet Technologies
Accounting Applications
Animation
Good luck.

No, both are the different branch of B.Tech.
Good luck.

You can watch Bharath University Full Tour on my channel https://www.youtube.com/criabhijeet?sub_confirmation=1

It will cost you around 80k per year plus the hostel charges if you opt for SJES College of Management Studies and for this course.