None of the standardized interview looks test for that kind of knowledge however, they really are generic. Also, I’ve find that the really famous bigcorps don’t care as much about what you know than what you could learn, even for experienced hires. So by generalist, they simply mean someone who can learn to do anything rather than someone who can already do anything. Full stack job descriptions often come from lower tiered tech companies that can’t afford that and anyways don’t have as much specialized infrastructure as a place like google does anyways.