OMG's specifications in Distributed Real-time and Embedded (DRE) computing cover your development project from analysis and design, through implementation, to deployment and maintenance. In order to earn OCRES certification at the Intermediate level, you will have to demonstrate your knowledge of most of our DRE specifications; for Advanced certification, you'll have to study all of them. 

To cover such a wide range of specifications in only two examinations, we've eliminated overlap in coverage between the two levels. Yes, the Intermediate and Advanced examinations share most of the specifications, but individual sections covered in the Intermediate exam are not revisited in the Advanced exam - instead, the Advanced exam uses the opportunity to test the breadth of your knowledge of the specification. 

To focus your study, we present here the coverage map for the two examinations - Every specification with its formal document number and a link to the web page where you can download it for free, plus a link to Jim Cooling's book page on one of the major on-line bookstores (just as an example; you can buy it at most major book sites). Percentages, although approximate, will also help you decide how much time and effort to spend on each one.