Hello Ken,
Thanks for your question. I just passed the PMI-ACP exam on Monday and I found that the questions on the PMI-ACP exam are very generic and short and test heavily on your knowledge of the "Agile Mindset" that is described in many of the twelve references. I have noted this as a difference to many of the questions we have in the first three exams and are updating our questions to reflect this difference. The questions are shorter and the challenge lies in the answer choices provided. I would focus on the principles of agile project management. Know scrum, XP, Kanban, and the TDD process. There were no questions from the other methods. Know the effects of increasing and decreasing WIP, be able to answer generic questions about how to find bottle necks in a process. There were only a couple calculation questions and of course be able to interpret burn charts. Understand the roles of the delivery team, the scrum master or coach, team leader, and the product owner as this will help you with many questions. Know the rules about what you can do and can't do while you are executing an iteration, how to handle requests for changes before and during an iteration and who should make these decisions. Know the reasons for incremental delivery of products and what the benefits are. Know sizing and estimating user stories how agile projects deal with risks. What are the roles and characteristics of servant leadership. There we no direct knowledge based questions, like what is the third principle or fourth value of the Agile Manifesto, but know how to apply those principles and values to short situational questions. So focus on knowing the agile mindset i.e. empowered teams, and encourage experimentation and change even if there is risk of a failed iteration. Know the strict structure for the daily stand up i.e. not a forum for discussion. How agile teams work with vendors i.e. contracts that allow change and have very regular contact and feedback with stakeholders. Usability testing, when and why is it used. Same with spikes, when and why they are used. Know what ideal and real time are and how they are used. Be able to use velocity and story points to answer questions about forecasting a projects end date. Be ready for very generic situationally based questions that require you to know and have internalized the principles and values of the Agile Manifesto. some of the questions in the simulator are currently longer and less generic than those you are likely to encounter on exam day and as a result we are updating many questions to be of the same form. I found the exam less difficult than the PMP exam and had almost a full hour to review. Good luck, I hope that helps.