Study with Oracle : 1Z0-895 Exam Torrent as your best preparation materials

While excepting a business method in a stateless session bean the container rolls back the method's transaction. Which three are possible causes for the container's behavior? (Choose three.)

• A. The business method throws a unchecked exception of a class type that is marked with the @ApplicationException annotation with the rollback element value true.
• B. The bean uses container-managed transactions and invokes EJBContext.setRollbackOnly.
• C. The business method throws a checked exception of a class type that is marked with the @ApplicationException annotation with the rollback element value true.
• D. The bean uses container-managed transactions and invokes EJBContext.getRollbackOnly.
• E. The bean uses container-managed transactions and throws a checked exception of a class type that is marked with the @ApplicationException annotation with the rollback element value false.
• F. The business method throws a java.lang.NullPointerException.

A developer wants to package an enterprise bean FooBean within a .war file:
@Stateless
public xlass FooBean {
public void foo () {}
}
Which package approach is correct?

• A. / (Root)
  I - META - INF /
  I - acme
  I - FooBean.class
• B. / (Root)
  I - WEB - INF /
  I - Classes/
  I - acme
  I - FooBean.class
• C. / (Root)
  I - WEB - INF /
  I - acme
  I - FooBean.class
• D. / (Root)
  I - acme
  I - FooBean.class

Assume you have been tasked with building an ejb-jar containing an EJB application. The EJB application contains local, remote, and web service end-point EJBs that provide reusable sevices within an enterprise. When the application is deployed, client will access the remote session beans using the global JNDI name java:ServiceLayer/<bean_name>. All of the EJBs are located in the com.acme.sevicelayer package and are deployed as class files. The application uses a mixture of deployment descriptor and annotation configuration.
Which JAR representation best represents deployed structure for the previous requirements?

• A. Option B
• B. Option D
• C. Option A
• D. Option C

A developer wants to release resources within a stateless session bean class. The cleanup method should be executed by the container before an instance of the class is removed. The deployment descriptor is NOT used.
Which three statements are correct? (Choose three.)

• A. The cleanup method must have no arguments and return void.
• B. The cleanup method is executed in an unspecified transaction and security context.
• C. The developer should mark the cleanup method with the @PreDestroy annotation.
• D. The developer should mark the cleanup method with the @PostDestroy annotation.
• E. The cleanup method is executed in the transaction and security context of the last business method Invocation.
• F. The cleanup method may declare checked exceptions.

Which statement about message-driven beans is correct?

• A. If a message-driven bean is associated with a JMS queue, each bean instance in the pool will receive each message sent to the queue.
• B. If a message driven bean is associated with a JMS durable subscription, each bean instance in the pool will receive each message sent to the durable subscription.
• C. When dispatching messages to message beam instances the container must preserve the order in which messages arrive.
• D. Each message-driven bean instance will be invoked by only one thread at a time.