Would you say the questions are generally more focused on specifics, such as aswering questions about what value to change on a server document, or what command to enter at the console; or are they more conceptual, such as understanding how to size an environment for transaction logging.
The last time I certified, in ND5, the exams were somewhat focused on concepts. Maybe it was just coincidence, but I had studied mostly how to accomplish various tasks and while I passed, I felt ill prepared when it was all over.
Of course I will be using practice exams as well.