Oracle 1Z0-860 Online Practice Questions and Exam Preparation

Oracle 1Z0-860 Online Questions & Answers

• Question 91:

  A developer creates the following session bean:

  10.

  ©Stateless

  11.

  @RolesAllowed("SECRET")

  12.

  public class MyBean implements Mylnterface

  13.

  public void methodAOJ}

  14.

  @PermitAII

  15.

  public void methodB0 {}

  16.

  @DenyAII

  17.

  public void methodC0 {}

  18.}

  No deployment descriptor is supplied. Which two statements are true? (Choose two.)

  A. A user in the role "SECRET" will be able to access all of the methods.
  B. A user in the role "FOO" will be able to access methodA and methodB.
  C. A user without any role will be able to access methodB but NOT methodA.
  D. A user in the role "SECRET" will be able to access methodA and methodB.
  E. A user in the role "SYSADM" will be able to access methodA, methodB, and methodC.
  C. A user without any role will be able to access methodB but NOT methodA.
  D. A user in the role "SECRET" will be able to access methodA and methodB.

• Question 92:

  XYZ Software develops business components using both the EJB 2.1 and EJB 3.0 APIs. Some customers are reluctant to completely migrate to the EJB 3.0 model, but are willing to have EJB 2.1 session beans invoke EJB 3.0 session beans. How should XYZ Software enhance these components to meet this customer requirement?

  A. Use @EJBtoinjectareference totheEJB 3.0 businessinterfaceinto the EJB 2.1beanclass.
  B. Use in ejb-jar.xml for theEJB 2.1 beanto declare a reference tothe EJB3.0 business interface.
  C. Addan EJB3.0-stylebusiness interface to EJB 2.1 beans to achieve interoperability between EJB 2.1 and EJB 3.0 beans.
  D. Use @RemoteHome and @LocalHome to adapt EJB 3.0 beans so that EJB 2.1 beans can look up the adapted home interfaces using JNDI.
  D. Use @RemoteHome and @LocalHome to adapt EJB 3.0 beans so that EJB 2.1 beans can look up the adapted home interfaces using JNDI.

• Question 93:

  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.
  B. The container will ensure that the transaction will never commit.
  E. Thebean must have container-managed transaction demarcation for this to be legal.

• Question 94:

  Given the following entity class:

  11.

  @Entity public class Customer)

  12.

  @ld private int id;

  13.

  private transient String name;

  14.

  private Jav

  a.

  math. BigDecimal grossAmmount;

  15.}

  Which mapping annotation can be added to the fields of this entity?

  A. @Columntothe name field
  B. @Embeddedldto theid field
  C. @Basictothe grossAmmountfield
  D. @JoinColumnstothe grossAmmount field
  C. @Basictothe grossAmmountfield

• Question 95:

  A developer writes two session beans which cooperate. The first session bean, ShoppingCart, collects orders and is implemented as a stateful session bean. The second session bean, CalculateDiscount, is implemented as a stateless session bean and runs on a different server. ShoppingCart contains the method getTotalPrice, which calculates the total price of the order in the ShoppingCart, including discounts. Discounts are calculated by CalculateDiscount using the information on the ShoppingCart bean, combined with data from a database. Which scenario can accomplish this?

  A. The CalculateDiscount offers a method calculate which is invoked by the ShoppingCart bean passing the this reference.
  B. The CalculateDiscount offers a method calculate which is invoked by the ShoppingCart bean. CalculateDiscount accesses the ShoppingCart instance by JNDI lookup.
  C. The CalculateDiscount offers a method calculate which is invoked by the ShoppingCart bean passingitsreference obtained from the SessionContext.getBusinessObject method.
  D. The CalculateDiscount offers a method calculate which is invoked by the ShoppingCart bean. CalculateDiscount accesses the state of ShoppingCart by dependency injection.
  C. The CalculateDiscount offers a method calculate which is invoked by the ShoppingCart bean passingitsreference obtained from the SessionContext.getBusinessObject method.

• Question 96:

  Given :

  9. @Stateful

  10. @TransactionManagement(TransactionManagementType. BEAN)

  11. public class FacadeBean implements Facade { 12 @EJB Business business;㏑esource SessionContext ctx;

  13. public void startStuff0 throws Exception {

  14. ctx.getUserTransactionQ.beginO;

  15. business. doA0;

  16. business. doBQ;

  17.}

  18. public void endStuff0 throws Exception {

  19. ctx.getUserTransactionO.commit0;

  11. ©Stateless

  12. public class BusinessBean implements Business { 13.©Resource SessionContext ctx;

  14. public void doAO { ctx.setRollbackOnlyQ; }

  15. @TransactionAttributeO"ransactionAttributeType.REQUIRES_NEW)

  16. public void doBQj}

  A client calls startStuff and endStuff subsequently. Assuming NO other transaction- related metadata, which two statements are correct? (Choose two.)

  A. MethoddoB isnevercalled.
  B. The transactionin methoddoB is committed.
  C. The transactioninmethod doB is rolledback.
  D. An exception is thrown when calling method endStuff.
  E. An exception is thrown when calling method startStuff.
  B. The transactionin methoddoB is committed.
  D. An exception is thrown when calling method endStuff.

• Question 97:

  The Java Persistence entity Lineltem defines a composite primary key that is defined by the two columns ORDERID and LINEITEMID in the database. Which two are true? (Choose two.)

  A. Lineltem must define a primary key class to represent the composite primary key.
  B. The composite primary key is mapped as two fields in Lineltem. No extra primary key class is necessary.
  C. The combination of ©Embedded and @Embeddable annotations can be used to denote the composite primary key.
  D. The semantics of the equals and hashCode methods of the primary key class must be consistent with the database equality.
  A. Lineltem must define a primary key class to represent the composite primary key.
  D. The semantics of the equals and hashCode methods of the primary key class must be consistent with the database equality.

• Question 98:

  A developer has created an application-managed entity manager. Which statement is correct?

  A. A new persistence context begins when the entity manager is created.
  B. A new persistence context begins when a new JTA transaction begins.
  C. A new persistence context begins when the entity manager is invoked in the context of a JTA transaction.
  D. A new persistence context begins when the entity manager is invoked in the context of a resource-local transaction.
  A. A new persistence context begins when the entity manager is created.

• Question 99:

  Given this Java EE application that uses a JTA application-managed entity manager:

  20.

  UserTransaction utx = ...;

  21.

  utx.beginQ;

  22.

  // insert code here

  23.

  utx.commitQ;

  Which two code fragments can be used on Line 22 to persist an order instance assuming that all references are properly initialized? (Choose two.

  A. em.merge(order); em.flushQ;
  B. em.persist(order); em.flushO;
  C. em.joinTransactionO; em.persist(order);
  D. em = emfcreateEntityManagerQ; em.persist(order);
  C. em.joinTransactionO; em.persist(order);
  D. em = emfcreateEntityManagerQ; em.persist(order);

• Question 100:

  A developer examines a list of potential enterprise applications and selects the most appropriate technologies to use for each application. For which two applications is EJB 3.0 an appropriate solution? (Choose two.)

  A. torenderaGUI for mobile clients
  B. as a container for web-tier components including JSP
  C. as a Web serviceendpointaccessedbynon-Java clients
  D. to receiveandrespondto HTTP Postrequests directly fromaweb browser
  E. asanonline shoppingcart whichcan persist across multiple sessions with a single client
  C. as a Web serviceendpointaccessedbynon-Java clients
  E. asanonline shoppingcart whichcan persist across multiple sessions with a single client