Hello everyone,
I have an upcoming interview on microsoft. Link for that event is similar to this -
https://careers.microsoft.com/us/en/job/1020745

I am not sure what is expected to this virtual events. If you have finished this event or have idea about this then please help me.
I am expecting answer of the following questions.

1. What should I prepare for this interview? Do I need to take preparation on Operation System, Object Oriented Design or System Design0?
2. It would be better if you specify like this:
   1st round: Coding - Algorithm
   2nd round: Coding - Problem solving
   3rd round: System design
   4th round: Core competency

If you provide me answer of this questions then it would be helpful for me. Still I am confused about the round's topics.

N.B: I mailed to my recruiter and she replied that as she doesn't take interview so she is not sure also.

Thanks in advanced.