Hmm...that sounds crazy.
The same thing happens when you sit on your CCIE lab exam. Your brain will no doubt begin burning soon...
An interest question: What is the difference between an experienced engineer and an inexperienced engineer? Someone gives the following answer:
While encountering a problem, a complete topology map will soon appear in a veteran's brain, whereas a newbie can only see several nodes on the topology map.
The same rule may apply to a cert exam: by glancing at a question, you would immediately judge what the test point is, even the approximate location it appears on the study guide.
Not easy of course, but deserve to try.