There are many employers (such as mine,) which do not use these theoretical questions, and instead focus questions on prior project work. That said, many of the

There are many employers (such as mine,) which do not use these theoretical questions, and instead focus questions on prior project work. That said, many of the high-prestige employers (and their former employees) do use the tests you're talking about, largely because they see themselves as exclusive. If you're aiming for one of those prestige employers, you should be aware that they're also exclusive about which schools they recruit from.