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Method Protocol (JRMP) as its default m layer ? Inter InterORB Protocol (IIOP) is the standard protocol used by CORBA ? Provides greater reusability, crosslanguage use, better integration into legacy systems, firewall navigation and context propagation Java IDL ? Addresses semantic differences between RMI and CORBA relating to distributed garbage collection, object conversion and type mapping JDBC ? Provides access to most database management systems via SQL ? Similar, though not identical to Microsoft ODBC Java Naming and Directory Interface ? Provides a unified API for associating names with objects, accessing objects by their names and associating attributes with objects ? Acts as an adapter to LDAP, No