See Wipro didn't have any restrictions for the NIOS Board students. If you have the skills then you can get a job at Wipro undoubtedly. Wipro recruits different professionals such as Engineers, Management professionals, Accountants, Economists and Law professional and other required professionals. So you need to have a good knowledge about your subject and need to have some expertise in a professional field.

For placement related tips you may visit the link below:

https://engineering.careers360.com/articles/10-tips-for-placement-interviews

I hope this answer helps. All the very best for your future endeavors!