Got a phone interview for a backend dev job in an opsec company.

Interviewer:
This is a very serious and prestigious position, we take care of the most important bits of code.

*Proceeds to talk introductory nonsense*

Interviewer:
Do you know what a DNS is?

Me:
Yes, of course! DNS stands for Domain Name System.... Blah blah blah... I explain about the servers, about hosts file, about DNS spoofing and everything else possible on this topic.

Interviewer:
See, I was patient with you - letting you finish. I'm not sure what you're talking about and where you got it from, but a DNS is that line in the browser where you type the site's name.

He didn't ask any more questions, just told me that they'll get back to me. I asked not to do that.

Three weeks later I got an email claiming that I'm not qualified.