Hi Rich! Are you talking about the KLCP or the small quizzes at the end of some chapters on the Kali.training website?
IF you’re talking about the former, you should definitely work through the ENTIRE book and all the exercises before attempting the KLCP. The KLCP will require a pretty thorough understanding of all the concepts in the book. If you’re talking about the online quizzes on the site, you can work them at the end of each chapter.