Last October 29, I took the exam 70-547: http://www.microsoft.com/learning/en/us/exams/70-547.mspx and I got a passing score (phew!) Well that was really really hard!
My strategy for this exam is based on the preparation guide of the exam it self, so quoting Microsoft Learning:
Candidates should have worked in the following phases of the application life cycle:
- Technical envisioning and planning
- Design and development
- Stabilizing and releasing
If you are taking this soon, I would suggest that you focus on these topics:
- Exception handling
- SQL and Data Topics
- Authorization and Impersonation
- The usual master page and theme questions
- Validator controls
- Testing and Deployment
Thanks also to my Boss 😛 for getting us this wonderful reference books from Microsoft Press! This book is still available at amazon.com.