The rules of Quiz: Knowledge For Linux are quite simple. There are two mode in this application: practice mode and test mode. For learning, just going to practice mode to get the questions & correct answers. For testing, going to test mode to start a test engine with time limited and get the result after the end of test.
Available exams: 117-010, 117-101, 117-102, 117-201, 117-202, 117-300, 117-301, 117-302, 117-303, 117-304