Many thanks, Devin!
Actually what you have shared answers my question. Seems the real exam questions are more difficult to understand than the prepcast ones.
This was what I suspected, and it can be quite a big issue for people like me with mother language other than English. The exam can be taken in several languages, but unfortunately mine is not among them. This, added on top of the whiteboard being practically useless, will make the exam a challenge.
So I cross fingers and hope to have luck with the questions

Let me also go through the real exam and I will share also my experience with the rest.
Many thanks once again!
Irena