I am Cisco instructor, teaching the ECMS (besides other courses). I do not know the current question pool. But from my experience with Cisco exams, you will always see questions which are not covered in the course. You should have some pracitcal experience before taking the exam. This is not only the case for the ECMS, but generally applies to all Cisco exams. You can find some hints for preparing the exam in the learningnetwork: https://learningnetwork.cisco.com/s/meraki-solutions
One additional point regarding the ECMS: Parts of the content is not included in the student guide. The instructor shows many things using a demo environment. There are no slides for this content. It is not easy for you as student to review this content.
