I once failed an interview, and I think it was because the interviewer laid a trap for me. He asked if I would use such-and-so algorithm to solve a particular

I once failed an interview, and I think it was because the interviewer laid a trap for me. He asked if I would use such-and-so algorithm to solve a particular problem, and I said sure. I had never heard of such-and-so algorithm, but I figured that I could look it up once I had the job. When I didn't get the job, I realized that such-and-so was probably made up by the interviewer to see if I was trying to BS my way into the job. Being honest would have been a better approach.