I migrated the company I work for to Google Apps last year, five mail systems onto one platform. The feedback has been great and the platform is working well. I thought is was a good time to do the exam while all the knowledge was still fresh.
The exam is pretty good compared to others I have taken in the past, a virtual environment which you configure to the exact specifications of the exam. Once configured you hit submit and a bot checks the configuration to see if you have passed.
Next up, the Google certified deployment specialist.