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It's so stupid, all of it. They try to come up with random questions that doesn't mean anything if the candidate remembers the answer at that point in time. I've read about Linux inodes. I know what they do. In fact I even have had Linux systems where I get inode related error messages because the partition had too many small files on it. But given that question, in that situation, I would likely not know what they e…
In terms of topical content it's a good question. The idea that the name is a link stored in a directory entry is a key part of filesystem architecture and anyone familiar with unix filesystems should be able to immediately talk about why. The problem here is that what could be an invitation to showcase knowledge is reduced to a vague, one-dimensional and non-obvious trivia question. There are a ton of valid answers…
I had a teacher once who constantly asked questions like these in such an imprecise fashion there was no way anybody could have guessed how the question was even meant to be answered. I still cringe when I think about it, because the only purpose of these questions was to show us that he is really clever and we don't know shit — and it didn't work at all.