[jondubois]

Yes, that could happen if the person interviewing you has really deep knowledge of a very narrow area and somehow they've grown to think that this niche embodies all of software engineering.

I find that older, more experienced engineers tend to know not to ask these kinds of deep domain-specific questions (unless the are directly relevant to the position being applied for).

The unfair part about this type of interview process is that the interviewer assumes that what the candidate knows is only a subset of what they know - But they completely ignore the knowledge that lies outside of the intersection (which could also be useful).