Each of the three times I've talked to Google about a job they pulled the same shit on me -- and I'm not even a developer.
Examples: obsessing over the reasons for . and .. directory entries, minutia of switch implementation of spanning trees.
Very little pertaining to sysadmin work was actually asked.
Once I was given an interactive coding interview. They'd told me to watch several videos about how to interview with Google, and they failed me because I did want the videos said to do.