Naming service

• JNDI - Java Naming and Directory Interface

• Allows a client object to locate an EJB server where a particular class resides

• Provided by the EJB server

• Provides a reference to the home interface of the EJB.  This interface contains a lifecycle method to instantiate the class on the server.  This may or may not actually instantiate a new object, depending on the type of bean and availability of an instance from a pre-existing pool of objects.  The container makes this decision.

Remote connection protocol

• Distributed object connections are built on the Java RMI protocol

• Java RMI handles details such as marshaling and unmarshaling of attributes and method parameters

• RMI itself runs on top of a lower-level distributed communication protocol.  One common choice is the Internet Inter-ORB Protocol (IIOP), the communication protocol used by the CORBA standard.