We do not provide support for Azure certifications on this site. Your best bet is to use their official support channel.
In terms of what is on an exam the may learning site gives you a list of the topics and within each learning session it breaks down the topics even further. For example the AZ-104 exam covers storage and the storage session lists the topics here. Encryption isn't listed but securing endpoints is. Go through the training to see what you should know.
Be aware that MS is known to ask questions that aren't explicitly listed as topics in the learning material. Exams are not static and each person gets a different combination of exams. Furthermore, historically, exams have been weighted based upon your correct answers. For example, in my experience, they may ask you a medium difficulty question about a topic. If you get it right they move on to a different topic but if you get it wrong then they may ask a series of easier questions on the topic. The actual topics are, from my understanding, dynamically determined at the start of the exam and then questions are pulled from the list of available questions from there. Hence it is really hard to know whether you'll get a question on a topic or not.