The code half of the exam is open book. The answer is in front of you. What runs out is the time you spend deciding where to look, so this drills only that.
A question appears in the wording an exam would use. You name the article. It is scored in seconds, because seconds are what you are actually short of.
Some of the wrong answers are article numbers that no longer exist. A few died this cycle. Others have been dead for years and still turn up in old study material. Those are the ones worth getting wrong here rather than in the exam room.