So you need to learn to pass exams, not preparing him. But honestly, if you don't prepare, you'll have to rely purely on their luck. You're not a complete chump, something I know. Come to the exam as is, pull the right ticket and "pour water", if necessary. If the ticket is unsuccessful, pull the question to the topic on which you can speak. Of course, there are teachers who will bite you, for sure, but most listen to the students in a half-ear, and will hardly stop you if you are there go in their arguments. The risk, of course, is great, but who does not risk does not drink champagne.
Another way is suitable for those who have already purchased phones, smart phones or other similar devices, which have touch display. You don't need to press buttons that are often clicked. Install Internet and directly during the test dig on the world wide web. But in any case not "satalites", and then in a flash leave in a corridor with a retake.
Other methods of exams require some preparation. For example, spurs and "bombs" (sheets with ready-made answers that you want to get out of the bag already on the exam and pretend that you just now wrote). To do them properly, you need to shovel a lot of books or, at the worst case, to find answers on the Internet, copy it into a text document and make the font microscopic, breaking the text into columns. You need to manage to cut the spurs, and put them in pockets, boots and other containers. The files you can read with the phone - and they require work: after all, they still need to find.
As you can see, all methods that do not require learning of material that does not require work on the subject, it's pretty risky and you threaten complete failure. It would be very disappointing if, having used all the tricks and techniques you still nothing will pass. The surest way to pass the exam is to learn the material. No adrenaline rush, calm reasoning, complete response and "excellent" in the record book. Needless to Excel and to deceive the teacher, and yourself if you think a little head? Of course, you need to give some of your time, but you came to University for knowledge that will help you in the future.