Hi Sandeep,
alfresco-dod5015-3.3.amp is what we refer to as version 1 of the RM module, or more commonly know as 3.2R .. it was shipped with version 3.2 of the repository.
alfresco-rm-2.0.2-147 is the latest and greatest version of the RM module .. it has a number of new features and many improvements .. it is the recommended version to install and works with repository versions from 4.0.2 upwards, including the latest community releases.
In order to guess which version of RM you have install I'd need to know which version of community you are running.
Thanks,
Roy