I mean the number of nodes in the cluster? how many cores per node? how much RAM per node?
You will be given a cluster that's appropriate to take the exam successfully. The only detail you need to know is the CDH version, which is listed in the related exam webpage.
There is nothing more we can share regarding the exam environment, unfortunately. Please watch the updated video again, which will give you a clear view of what to expect during this exam.
Thank you for your understanding and cooperation.