The background and design of the RDP accounts for a fairly large percentage of the RDP exam. A lot of the answers are found on the table, or rules tab of the eRDPml. Other questions are about the structure of the RDP
This might help
Answers found on RDP
There are several questions regarding flying after diving, diving at altitude, what to do if you miss a safety stop and special rules for WXY or Z pressure groups. All of these answers can be found on your table, or in the Rules tab of your eRDPml.
Structure of the RDP
To answer these questions, you need to remember that the RDP is based on 14 tissue compartments, and the US NAVY table is based on 6 tissue compartments.
Also the surface interval credit table is based on 60 minute half time tissue for the RDP and 120 minute half time tissue for the US NAVY.