Had a similar experience. I was a recent grad, around 10 years ago. A Google recruiter called me out of the blue. After a couple of minutes, she started asking

Had a similar experience. I was a recent grad, around 10 years ago. A Google recruiter called me out of the blue. After a couple of minutes, she started asking technical questions about Linux, which I had just started using. After a while came the final blow: I was asked what was the fastest way to sum two integers (there were probably some additional specs I don't recall). I mumbled something. Wrong! The answer is, in fact, using the TLB. I vaguely remembered what the TLB was from my CPU architecture classes, but was aghast at the connection between that and summing two integers. The recruiter pretty much said I wasn't Google material on the spot and said goodbye. I felt bad for myself at the time, but now I can see this is a ridiculous approach to interviewing.