1Z0-860 Online Practice Questions and Answers

EJB 3.0 containers must provide a specific subset of which two APIs? (Choose two.)

A. JSP APIs

B. JavaMailAPIs

C. JAX-WS APIs

D. Java CardAPIs

E. Sun Studio APIs

A developer writes a stateless session bean with one local business interface and with containermanaged transactions. All business methods have transaction attribute REQUIRED. The bean has an injected field sessionCtx of the type SessionContext. Which two operations are allowed in a business method of the bean? (Choose two.)

A. sessionCtx. getEJBObject

B. sessionCtx.setRollbackOnly

C. sessionCtx. getMessageContext

D. sessionCtx. getBusinessObject

E. sessionCtx. getEJBLocalObject

Which statement is true about the use of a persist operation in a transaction?

A. If a user persists a detached object it always becomes managed.

B. The persist operation on an entity always cascades to its related entities.

C. If a user persists a new entity with an existing primary key the transaction will fail.

D. If a user persists a managed entity an exception may be thrown by the persist operation.

The Java Persistence API defines the Query interface. Which two statements about the Query.executeUpdate method are true? (Choose two.)

A. Itmust always be executed within a transaction.

B. It throws a PersistenceException if no entities were updated.

C. It throws an HlegalStateException if called on a Query instance created with a Java Persistence SELECT query.

D. All managed entity objects corresponding to database rows affected by the update will have their state changed to correspond with the update.

A developer writes an interceptor class called Foolnterceptor containing the following Aroundlnvoke method:

11.

@Aroundlnvoke

12.

public Object intercept(lnvocationContext ctx) {

13.

return "intercepted";

14.}

Foolnterceptor is applied to a business method in a stateless session bean:

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@lnterceptors(Foolnterceptor.class)

12.

public String testzero(int i) {

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return (i == 0) ? "zero""not zero";

14.

}

Which describes the result when a client invokes the test zero method with a value of 1?

A. The intercept method is NEVER invoked.

B. The clientreceivesareturnvalueof "zero".

C. The client receivesa returnvalue of "not zero".

D. The client receivesareturn value of "intercepted".

Given this code snippet from a JMS message-driven bean class named MyMDB:

11.

public MyMDBOJ System, out. print("a "); }

12.

public void onMessage(Message m) { System, out. print("b "); }

13.

@PreDestroy

14.

public void removeQ { System, out. print("c "); } The container crashes and then restarts and then the bean class handles two messages.

Which four are possible results? (Choose four.)

A. abb

B. acbb

C. aa c bb

D. aab b c

E. a bcb c

F. ababc c

Which statement is correct about a Java EE client of a message-driven bean?

A. Theclientcan useJNDI toobtainareference to a message destination.

B. The clientcan use JNDItoobtain a reference toadependency injection.

C. The client canuseJNDI to obtain a reference to a message-driven bean instance.

D. Theclient can use JNDI to look upareference tothemessage-driven bean's home interface.

Which statement is correct about the Java Persistence API support for the SQL queries?

A. SQL queries are NOT allowed to use parameters.

B. The result of an SQL query is not limited to entities.

C. Only SELECT SQL queries are required to be supported.

D. SQL queries are expected to be portable across databases.

A Java EE 5 application contains a session bean which uses a security role USER. A group called people is defined in an LDAP server. Which two define appropriate EJB role responsibilities? (Choose two.)

A. The deployer definesandconfigures the LDAP realm.

B. The system administratordefines and configuresthe LDAPrealm.

C. Thedeployermaps the application role USER totheLDAP group people.

D. Thesystem administrator maps the application role USER totheLDAP group people.

A developer is working on a user registration application using EJB 3.0. A business method registerUser in stateless session bean RegistrationBean performs the user registration. The registerUser method executes in a transaction context started by the client. If some invalid user data causes the registration to fail, the client invokes registerUser again with corrected data using the same transaction. Which design can meet this requirement?

A. Have registerUser method call EJBContext.setRollbackOnlyOmethodafter registration fails.

B. Have registerUser method throw javax.ejb.EJBTransactionRequiredExceptionafterregistration fails.

C. HaveregisterUser method throw EJBException without marking the transaction for rollback, after registration fails.

D. Create an application exception withtherollbackattributeset to falseandhave registerUser method throwit afterregistration fails.