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Oracle 1Z0-860 - Questions & Answers

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Question 1
Single choice

Given the following stateful session bean:
10. @Stateful
11. @TransactionAttributefJransactionAttributeType. SUPPORTS)
12. public class VideoBean implements Video {
13. // insert code here
14. public void methodAO {}
15.}
Assuming no other transaction-related metadata, which code can be added at Line 13 to guarantee that business method methodA will execute only if invoked with an active transaction?

A.

@TransactionAttributefJ

B.

@TransactionManagement(TransactionAttributeType. CONTAINER)

C.

@TransactionAttribute(TransactionAttributeType.MANDATORY)

D.

@TransactionAttributeO"ransactionAttributeType.REQUIRES_NEW)

Question 2
Multiple choice

Given the following client-side code that makes use of the session bean Foo:
10. @EJB Foo beanl;
11. @EJB Foo bean2; //more code here
20. booleantestl = beanl.equals(beanl);
21. booleantest2 = beanl.equals(bean2);

Which two statements are true? (Choose two.)

A.

If Foo isstateful,testlistrue, and test2 is true.

B.

IfFoo is stateful, testlis true,andtest2isfalse.

C.

IfFoo is stateless, testl is true, and test2 is true.

D.

IfFoois stateful, testl is false, and test2 is false.

E.

If Foo isstateless, testl istrue,and test2 is false.

F.

If Fooisstateless, testl is false, andtest2is false.

Question 3
Single choice

Which statement about entity manager is true?

A.

A container-managed entity manager must be a JTA entity manager.

B.

An entity manager injected into session beans can use either JTA or resource-local transaction control.

C.

An entity manager created by calling the EntityManagerFactory.createEntityManager method always
uses JTA transaction control.

D.

An entity manager obtained through resource injection in a stateful session bean can use a resource-local EntityTransaction for transaction control

Question 4
Single choice

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.

Question 5
Multiple choice

A developer writes a stateless session bean with one local business interface and with container-managed 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

Question 6
Multiple choice

A developer implements a session bean with a method doStuff which behaves differently depending on the caller's security role. Only users in security roles "ADMIN" and "USER" are allowed to call the method.
Assume that there is no security-related metadata in the deployment descriptor.

Which two, taken in combination, are appropriate to accomplish this? (Choose two.)

A.

Annotate method doStuff with @PermitAII.

B.

AnnotatemethoddoStuff with@RolesAllowed({"ADMIN","USER"})

C.

If EJBContext.getCallerPrincipal returns role "ADMIN", implement thebehaviorfor users in role ADMIN.

D.

If EJBContext.isCallerlnRole("ADMIN") returns true, implement the behavior defined for users in role
"ADMIN".

Question 7
Single choice

Which Java Persistence query uses the aggregate function correctly, assuming that chairs field is of type int?

A.

SELECT ANY(r. chairs) FROM Room r

B.

SELECT NEW Integer(MAX(r. chairs)) FROM Room r

C.

SELECT r FROM Room r WHERE r.chairs > AVG(r.chairs)

D.

SELECT c FROM Chair c WHERE LOCATE (c.type, lazyboy) > -1

Question 8
Single choice

Given:
11.©Entity public class X{
12. @ld int id;
13. Y y;
14.}
A public class Y with NO Java Persistence annotations is defined in the same package.

Which statement is correct about these classes if NO other annotations and mapping descriptors are provided?

A.

Class Y must be serializable.

B.

ClassYmust be marked as an entity.

C.

The entity X is notdefinedcorrectly.The field y must be marked as @Lob.

D.

ClassY must be accessedbyapersistenceapplication throughapublicinterface.

Question 9
Single choice

A developer creates a stateless session bean. This session bean needs data from a remote system.
Reading this data takes a long time. Assume that the data will NOT change during the lifetime of the bean and that the information to connect to the remote system is defined in JNDI.

Which statement describes how to manage the data correctly?

A.

Readthe datain the bean's constructor.

B.

The datacan only bereadinthebean's business methods.

C.

Read thedatain a method which is annotated with@PrePassivate.

D.

Read the data in a method which is annotated with @Post Activate.

E.

Readthedata ina methodwhich is annotated with (5)PostConstruct.

Question 10
Multiple choice

An enterprise bean has security permissions set up using declarative security features.
Under which two conditions can a client be guaranteed to have permission to invoke a business method on the enterprise bean? (Choose two.)

A.

The Application Assembler has marked the enterprise bean methodasunchecked.

B.

The client's principalhas beenassigned a securityrolewithpermissionto invokethe method.

C.

The Application Assembler has set the security-identity deployment descriptor to run-as.

D.

TheApplicationAssemblerhas mapped all security role references using the role-link element.

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