So finally – this exam is under the belt as well. It was actually harder than I expected asking some pretty exoteric questions about Custom Activity Development and IPendingWork interfaces that you do not use all that frequently.
The Rule-engine of WF is asked extensively so know how to build the rules “by hand” and understand how to read the rules found in the .rules files (xml-document). In addition – know how to expose and consume webservices from/to a workflow. Understand how to communicate with the workflow from the host (events), and the other way around (method calls). The signature of types used for communication is also quite important to understand.
Know what services are added to WFRuntime by default and what they do to the runtime.
The exam lasts 240 minutes and consists of 53 questions.