Better yet, the interviewer should have experience in said job, as to better evaluate a potential candidate.

I'm pretty sure, most of us have come across folks who pretend to know something, you ask them easy, little, but esoteric questions, that prove whether or not they even have knowledge in something.

At least for big firms, this isn't out of the realm of possibility. Small companies... I get it. They have to then base it off experience, references and gut feelings.