[benvanderbeek]

I've never used these in hiring. Assuming the candidate doesn't have the questions beforehand, seems you're mostly testing someone's ability to BS/improv and promote themselves on the spot. For coders, I don't find this skill to be closely tied to job performance. Possibly an inverse correlation.

Providing them beforehand would possibly be more useful, but in this case there's no real need to "practice" so I don't think that's what the link you provided is referring to.