Microsoft Software Development Engineer (SDE) interview questions

I was contacted by a recruiter via mass email which stated there was a hiring event for the Cloud OS team. The email directed me to send a reply email with my most current resume and fill out a survey which asked general questions about my education, goals, and professional (coding/project) experience. The same recruiter called me back within two days and we chatted briefly about my career goals. After a 30 minute (non-technical) chat the recruiter invited me to take the OTS which would be a basic skills assessment on elementary concepts such as trees, linked lists, queues, etc. "some things I may not have seen in a while." I'm not through with the process but I wanted to get this question up before I forgot it as there were not a lot of example questions online re: the OTS. I hope it helps someone else!

informational + 4 interview rounds all coding and algotithm