NALSD question is a required part of the interview. https://sre.google/workbook/non-abstract-design/ I did a quick search and it looks like there are youtube videos explaining it so that might be helpful.
Other than that I was asked to implement a 'tail' command using my familiar language, and explain why deleting a file from disk doesn't free up the space.
Other than that I was asked to implement a 'tail' command using my familiar language, and explain why deleting a file from disk doesn't free up the space.