Oracle Oracle Certifications 1Z0-860 Questions & Answers

• Question 91:

  Which three statements are true about EJB 3.0 containers? (Choose three.)

  A. Remote argument passing semantics conform to Java RMI-IIOP.

  B. The JAXB 2.0 API is guaranteed to be available for all bean types.

  C. The Java 2D API is guaranteed to be available for session beans.

  D. javax. naming. InitialContext is guaranteed to provide a JNDI name space.

  E. The Java Telephony API is guaranteed to be available for session and message beans.

  F. javax.transaction. UserTransaction cannot be used by beans when bean- managed transaction demarcation is used.

  Correct Answer: ABD

• Question 92:

  Giventhefollowing statements about an EJB deploymentdescriptor for whichthe metadatacomplete attribute is not specified:

  I. The EJB deployment descriptor can provide additional metadata to bean class annotations.

  II. The EJB deployment descriptor can partially override bean class annotations.

  III. The EJB deployment descriptor can entirely override bean class annotations.

  Which is true?

  A. OnlystatementI is correct.

  B. Only statementIIis correct.

  C. Only statement III is correct.

  D. Both statementsIand II are correct.

  E. Both statementsIandIIIare correct.

  Correct Answer: D

• Question 93:

  Consider a deep inheritance hierarchy consisting of Java Persistence entity classes, non- entities, and mapped superclasses. Which statement is correct, assuming NO mapping descriptor is present?

  A. An entity class must NOT inherit from a non-entity class.

  B. An entity class must NOT be extended by a non-entity class.

  C. Only the root class in an inheritance hierarchy can be annotated wtith @MappedSuperclass.

  D. The primary key must either be defined in the topmost entity class of the inheritance hierarchy or it can be defined in a superclass if this class is annotated as @MappedSuperclass.

  Correct Answer: D

• Question 94:

  Which statement is true about the EJB 3.0 stateful session bean?

  A. Its conversational state is retained across method invocations and transactions.

  B. Its conversational state is lost after passivation unless the bean class saves it to a database.

  C. Its interceptors and their instance field values are NOT part of the conversational state of the bean.

  D. Its conversational state is retained across method invocations but NOT across transaction boundaries.

  Correct Answer: A

• Question 95:

  A session bean calls the setRollbackOnly method on the EJBContext interface within a business method with an active transaction. Which two are correct? (Choose two.)

  A. The transaction timeout is immediately disabled.

  B. The container will ensure that the transaction will never commit.

  C. The bean must have started the current transaction for this to be legal.

  D. The bean must have bean-managed transaction demarcation for this to be legal.

  E. Thebean must have container-managed transaction demarcation for this to be legal.

  Correct Answer: BE

• Question 96:

  A Java Persistence application uses a Version attribute to manage concurrent updates. Which is true?

  A. The Version attribute must have a public access type.

  B. The Version attribute is used by the persistence provider.

  C. A separate Version attribute must be specified for each class in the inheritance hierarchy.

  D. A separate Version column must be specified for each table mapped to the entity.

  Correct Answer: B

• Question 97:

  A developer wants to create a Java Persistence query to perform a bulk update operation on five different entity classes. All of these classes have a field called name. These classes have the following relationships:

  Harrier extends Dog and Dog extends Animal

  Vet extends Doctor

  What is the minimum possible number of operations required to change the value of the name field for all of the entities in all five classes?

  A. 1

  B. 2

  C. 3

  D. 4

  E. 5

  Correct Answer: B

• Question 98:

  Which is the correct way of declaring bean-managed transaction demarcation for an EJB 3.0 message-driven bean?

  A. @MessageDriven public class MyMessageBean implements MessageListener, UserTransaction {

  B. @MessageDriven @TransactionManagement(TransactionManagementType.BEAN) public class MyMessageBean implements MessageListener { C. @MessageDriven public class MyMessageBean implements MessageListener) @TransactionManagement(TransactionManagementType.BEAN) public void onMessage(Message message) {...}

  C. @MessageDriven (transactionManagement=TransactionManagementType.BEAN) public class MyMessageBean implements MessageListener {

  Correct Answer: B

• Question 99:

  Which two capabilities are legal for an enterprise bean? (Choose two.)

  A. being a socket client

  B. updating a static field

  C. starting a separate thread

  D. listening on a server socket

  E. interrupting all the threads in a thread group

  F. using the java.lang.System.currentTimeMillis method

  Correct Answer: AF

• Question 100:

  Given:

  10.

  ©Stateless

  11.

  public void SecureBeanOl implements SecureOI {

  23.

  @AllowRoles("ADMIN")

  24.

  public void methodAO {}

  10.

  ©Stateless

  11.

  public void SecureBean02 implements Secure02{

  23.

  @AllowRoles("administrator")

  24.

  public void methodB0 {}

  Which deployer action permits a user authenticated as "John" to call both methodA on SecureBeanOl and methodB on SecureBean02?

  A. The deployer maps both role "ADMIN"androle "administrator" to user "John".

  B. Thedeployerreplaces"administrator"by "ADMIN" in thesource code of SecureBean02and maps"ADMIN" to user "John".

  C. The deployer overrides the method permission of SecureBean02. methodBintheejbjar. xmldeployment descriptor and maps"ADMIN"to user "John".

  D. The deployer defines a common role and maps role "ADMIN" and role "administrator" using security-role-ref entries to this role. This common role is mapped to user "John1

  Correct Answer: A