Simons Foundation interview questions

Had two interviews, first with an internal recruiter, then with the tech lead. Both interviewers were nice and the interviews were pleasant. Unluckily, the tech interview asked a bunch of questions I didn't remember from my undergrad OS class, and which didn't seem relevant to the job. Had I passed the tech interview the next steps would have been a take home, another tech interview covering SQL with the team, and a behavioral interview with a VP.