I did one of those when applying to my current job which adjusted based on how well you did. But it leaned quite hard into theory and details rather than writing code. Bitwise logic puzzles that would be hard to solve without being schooled in c or find that kind of puzzles fun.

I got things like inverting signed values 2-complement form, or bit shifting a float, or casting structs to arrays and poking at the bytes.

After starting i asked them if they had checked with AI, and they had apparently tested the quiz and it scored quite bad, so it was a good filter. (even if a-lot of the questions leaned more into puzzle solving than coding or design)