those questions are probably being asked by those whose calibre makes them think thats a skill testing question.
Many years ago, when I was in my 20's, I went for a job with a London council.
During the interview (3 person panel) I was asked a number of technical questions, one of which stumped me as it was rather esoteric. At the end of the interview the chairman asked me if I had any questions. "Not really," I said " but I've been racking my brains about the answer to your question about ....., could you remind me what it is?"
Dead silence and embarrassed looks from behind the table. They didn't know either!