Advanced Java J2EE Interview Questions and Answers - 2

Question: 6

What is RMI-IIOP?

A version of RMI implemented to use the CORBA IIOP protocol.

RMI over IIOP provides interoperability with CORPA objects implemented in any language if all the remote interfaces are originally defined as RMI interfaces.

Question: 7

What is role mapping?

The process of associating the groups or principals, recognized by the container with security roles specified in the deployment descriptor.

Security roles must be mapped by the deployer before a component is installed in the server.

Question: 8

What is service endpoint interface?

A Java interface that declares the methods that a client can invoke on a Web service.

Question: 9

What is transaction manager?

Provides the services and management functions required to support transaction demarcation, transactional resource management, synchronization and transaction context propagation.

Question: 10

What is URL?

Uniform resource locator. A standard for writing a textual reference to an arbitrary piece of data in the World Wide Web. A URL looks like this: protocol://host/local info where protocol specifies a protocol for fetching the object, host specifies the Internet name of the targeted host, and local info is a string passed to the protocol handler on the remote host.