Even though it is hard to say how similar will be the questions on the real exam, I would say that this book gives a very good picture what to expect.
The thing that even the incorrect answers are explained (why they are incorrect) is extremely valuable and excellent source of knowledge. Honestly, it seems to me that I learned more by this exam-questions style than with the standard studying material. Recommended.
Edit after the real Exam: The questions in the real exam were extremely different that the one presented in this learning material. And I have to say, that the questions here have max 50% difficulty level as the real ones. If your source for the exam is this book, expect and be prepared for much worse scenario.