Oracle 1Z0-895 問題集

質問 1：
Which two are true about the client view of a message-driven bean? (Choose two.)
A. Clients of a message destination need to know that the destination is listened to by a pool of message consumers,
B. References to message destinations cannot be looked up in the client's JNDI namespace.
C. References to message destinations can be infected.
D. Clients of a message destination do NOT need to know that the destination is listened to by a message-driven bean.
正解：C,D

質問 2：
Assume a client will be accessing a Singleton bean.
Which client views is a Singleton bean capable of exposing? (Choose two)
A. Web Service
B. Java Persistence API entity
C. EJB 3.x local business
D. Message listener
E. EJB 2.x Remote Home
正解：A,C
解説: (Topexam メンバーにのみ表示されます)

質問 3：
Given an JMS message-driven bean, which statement is true about its exception handling?
A. Its message listener method can throw any checked exception except java.rmi.RemoteException.
B. Its message listener method can throw any checked exception that implements java.io.Serializable.
C. Its message listener method must NOT throw any checked exception.
D. Its message listener method can throw java.rmi.RemoteException.
正解：C

質問 4：
A developer writes a stateless session bean FooBean and uses its deployment descriptor to declare a local ejb dependency on a stateful session bean in the same ejb-jar.

Which environment annotation, when declared within the FooBean bean class, is equivalent to the ejb-local-ref shown above?
A. @EJB(name="barRef", beanName="BarBean") Private acme.Bar bar;
B. @EJB(name="bar", beanName="BarBean") Private acme.Bar barRef;
C. @EJB(name="ejab/barRef", beanName="BarBean") Private acme.Bar bar;
D. @EJB(beanName="BarBean") Private acme.Bar barRef;
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 5：
A developer writes an interceptor class called FooInterceptor containing the following AroundInvoke method:
11.
@AroundInvoke
12.
public Object intercept (InvocationContext ctx) {
13.
return "intercepted";
14.
}
FooInterceptor is applied to a business method in a stateless session bean:
11.
@Interceptors (FooInterceptor.class)
12.
public String testzero(int i) {
13.
return (i = = 0) ? "zero": "not zero"
14.
}
Which describes the result when a client invokes the testzero method with a value of 1?
A. The client receives a return value of "zero".
B. The client receives a return value of "not zero".
C. The interceptor method is NEVER invoked.
D. The client receives a return value of "intercepted".
正解：D

質問 6：
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 checked 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.getRollbackOnly.
C. The bean uses container-managed transactions and invokes EJBContext.setRollbackOnly.
D. The business method throws a java.lang.NullPointerException.
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 unchecked exception of a class type that is marked with the @ApplicationException annotation with the rollback element value true.
正解：A,C,E
解説: (Topexam メンバーにのみ表示されます)

質問 7：
A stateful session bean needs to restore its conversational state to its initial state if the transaction in which the bean is participating rolls back.
Which bean method can be used to do this?
A. SessionSynchrinization.beforeCompletion
B. SessionContext.setRollbackOnly
C. SessionContext.getUserTransaction
D. SessionSynchronization.afterCompletion
正解：D
解説: (Topexam メンバーにのみ表示されます)