Thanks Christophe, Anthony, and everyone else at LinuxAcademy! I found this test to be MUCH easier than the CSA, and I'm not sure if that's because the CSA gave me a solid AWS foundation, or if this stuff just clicked a little better.
Notes for future test takers : make sure you get familiar with the API libraries (EC2, S3, DynamoDB) and pay special attention to the limits Amazon imposes on each service. . That + the excellent CDA course here at LA and you will be all set.