I had an initial conversation with a recruiter about my background. Then, I was scheduled for a phone screen with an engineer. Five minutes into the conversation, I already understood that I was dealing with a very junior engineer who lacked industry experience and, more importantly, lacked interviewing experience. She asked me a question that was very poorly described and, worst of all, did not allow me to show my problem-solving skills or my technical abilities. After the conversation, I looked her up on LinkedIn and was able to verify that indeed she had very little experience (less than a year). After a week, I got a rejection email from the recruiter. I sent him back an email explaining that they should not have junior, inexperienced engineers interviewing, especially not senior engineers like myself. He never replied to my email. My conclusion from this is that Quora doesn't have any senior engineers there to actually do interviews. It seems they opt for hiring college grads. This is not a place for serious software engineers. It seems to be a place for young, inexperienced hackers.

I can't remember it, but it was a very lousy question.