I’m always a bit suspect when responding to a question where the person asking doesn’t identify themselves but here goes. The “sample questions” that are included in the link that you provide are indicative of the types of questions you will encounter in the actual CSCS exam.
Just like any standardized exam, how well you do on the exam will depend on your preparation. Your profile offers no information on your fitness background, so you will need to assess the amount of “preparation” you do based on your knowledge and comfort level with the types of questions being asked compared to what you already know.
I wish you luck on the exam if you decide to take it.