SMDevOps interview questions

It was a telephonic interview. Interviewer asked a lot of good questions related to the MEAN stack and I was not able to answer some of them. He also asked a question related to data structures at the end which I was not able to answer correctly.

I have interviewed in 3 jan 2020 in SMDevOps the company has puted worng address on google and when i reached there they took 3 round of interview but the main problem in the company is that they are co working with sapster and you have to bring your own laptop to work of there why any one do that it kind of fraud company you would not pay you salary