There are questions and correct answers for a guard of 4, 5, 6 categories.
In one evening, flipping through and poking at the screen, you can prepare well for the exam. Nothing superfluous, everything is intuitive. This is the free version of the program and contains ads. If it bothers you, use the paid version of the program, which has no ads. The price of the paid version is less than one trip by public transport.