Meta Production Engineer interview questions

First part is a 20 question multiple-choice quiz that you have to complete in 18 minutes. The quiz covers basic linux commands, operating systems concepts, and networking. Very basic questions. Then its a 45 min algorithm interview over phone, with coder pad. Pretty easy questions. I got goat Latin and dinosaur CSV parsing question. The second interview is also over the phone and is an open-ended discussion with the interviewer. He/she asks questions about operating systems and debugging Linux systems. They go deeper and deeper into concepts until you don't know what is going on. Study Operating Systems fundamentals and tools to debug Linux systems (top, vmstat, dstat, sys trace, etc.).