Microsoft Developer interview questions

I am from Europe. First contact was through Linkedin, then short phone call, then non-technical screening with online call. After that invitation for a flight to Dublin for one day-interviews. During that day I was interviewed by four different people with different questions . Answered properly three out of four questions but it wasn't enough for a transfer to the US as a software engineer.

I got by referral and the first step I had to do an online assessment where I got to do two questions in two hours, I only remember one of them but they were tough.