The questions in the Marketing Cloud Developer simulated mock tests online emulate the exam pattern, syllabus topics, time available for attempts, and also the scoring system. Everything is very similar to the actual Salesforce Marketing Cloud Developer certification exam. So when I attempted the actual exam, I did not feel that I was doing something new. It was all like very similar to the mocks that I was attempting since past 2 months. I also had decided that I will continue the premium membership and so I did when I cleared the certification.