That's a question me myself i have been struggling with, I don't know what kind of questions to expect and I have been planning to do this exam for months ....currently and kinda using google/AWS roadmap and questions to prepare since there are enough support and resources. The commercial dumps for Databricks Certified Professional Data Scientist prep are not genuine at least the ones i have came across.

Kindly @Piper Wilson​  you'll be of help to the community if you accelerate this matter to involved team.