Jeeez.....My head was banging when I came out of this exam, it was solid. Without breaching NDA, you really need to know the product. The course was extremely helpful, it covers a lot of the stuff, but read every white paper AWS offers and set up deployment labs using autoscaling and cloud watch. Luckily, I use AWS virtually on a daily basis, so I was well prepped. Brush up on CloudFront, look for keywords which you learned from the course "Nested", "Cross Account" because some of the questions are tricks ones, there seems to be a few right answers but the answer is in the question, if you know what I mean, "cost effective", "highly available"
Good luck, I studied for 4 months on this one every day and scored 83% . I'm having a break now because this one took a lot out of me