Certificate

Yes, NIOS certificate is accepted by many foreign universities for providing admission in their universities. Few universities may require you to appear for the IELTS. Jobs abroad are also available to students who have completed their schooling from NIOS. Regards.

For a career in Digital Marketing, you must go for MBA in Digital Marketing. Because a certification may help you get the job but not a fruitful career. So, it is advisable to do MBA in Digital Marketing. It would definitely help you in the long run and if you are pursuing MBA in marketing then it is an added advantage. Various companies even look for a candidate having additional knowledge in marketing and DM is one of that. So, best of luck for your future.

Hello,
Right now, cut-off marks are not declared, but 80 marks are quite enough to cross the OBC cut-off, but for checking the rank, please follow the link provided and fill the details required to check the rank:
https://www.shiksha.com/b-tech/resources/jee-main-rank-predictor
All the best.

You can prefer some of the books as follows:-
Ethical Hacking and Countermeasures: Web Applications and Data Servers (EC-Council Press)
Ethical Hacking and Countermeasures: Secure Network Infrastructures (EC-Council Press)
Ethical Hacking and Countermeasures: Linux, Macintosh and Mobile Systems (EC-Council Press)

You can take admission in IGNOU for B.Com. Its degree certificate is valid for government jobs.

It's not possible to do M.Com without any Bachelor's degree so after receiving the Bachelor's degree you can take admission for M.Com.

As it is a full-time programme, it would not be possible for you to learn this course by sitting at home. You need to enroll for this program and attend the classes.

Yes, it is very much required.