Traditional Unix permissions are broken down into: so answer is 3 read (r) write (w) execute file/access directory (x) Each of those is stored as a bit, where 1 means permitted and 0 means not permitted.
I'd say 9, since the three bits you have mentioned have to be multiplied by the three user groups (owner, group, others). rwxrwxrwx
Some of the Key Questions in Round 1: HR Round 1. Tell me about yourself and your past experience. I think they were just checking communication skills. Also depth of experience 2. What am i looking in my next role? 3. Salary expectations
What ever applies to your situation, just explain it.
The key in generic questions like this, is to make sure to cover the fundamentals. There's usually a back-and-forth with the interviewer. Might be worth doing a mock interview with one of the Spotify Software Engineering Manager experts on Prepfully? Really helps to get some real-world practice and guidance. prepfully.com/practice-interviews