Like standardized testing, whiteboarding problems is another good data point. It provides a well-understood test given in a well-understood context. It should

Like standardized testing, whiteboarding problems is another good data point. It provides a well-understood test given in a well-understood context. It shouldn't stand alone, but it might be the case that a person who can't do a simple to intermediate algorithm at a whiteboard in front of others under a pressure isn't a good fit. Personally, I usually find questions about basic networking and the fundamentals of programming to be most revealing. You usually don't need to dig very deep to find out if a person really has a clue.