Interviewed at Google, looks like a system design screen focused on diagnosing large-scale outages. Just the one question but it went pretty deep.
“I started with the obvious stuff, DNS failure, CDN issues, and then tried to work my way into the less obvious layers like quota exhaustion or a bad config push.” The rest of the author's notes on Software Engineer interview at Google, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.