[erydo]

At some level I agree with your sentiment about shibboleth-style filtering. Not having seen these specific "tests" though, I can charitably imagine these being relevant to fault-tolerance/managed intricacy. Things like, "This code failed. How did it get to that state?" or "X can be interrupted at any time. Implement Y such that it atomically…" are examples of coding challenges that _are_ relevant to being fluent in embedded software development. I really doubt they're asking "implement quicksort"-type questions.