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QUESTION: 71
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 is stateful, testl is true, and test2 is true,
B. If Foo is stateful, testl is true, and test2 is false,
C. If Foo is stateless, testl is true, and test2 is true.
D. If Foo is stateful, testl is false, and test2 is false,
E. If Foo is stateless, testl is true, and test2 is false.
F. If Foo is stateless, testl is false, and test2 is false.
Answer: B, C
QUESTION: 72 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 [email protected]({“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”.
Answer: B, D
QUESTION: 73 You have been asked to develop business methods for an enterprise bean to fulfill the following objective: If the JDBC connection is NOT available, the current state of the shopping cart session must be serialized. A serialized state must be written to a text file using a java.io.PrintWriter. Data must be shared with a Web services end point. Logging information must be displayed in ajavax.swing.JPanel component. Which is true?
A. The requirements can be fullfilled only in sessionbeans.
B. Therequirementscan befulfilled only in message-driven beans.
C. Allof the requirements can be fulfilled using either session beans or message-driven beans.
D. None of the requirements can be fulfilled using either session beans or message-driven
beans.
E. Bothsession beansandmessage-driven beans canfulfillsomebutnotalloftherequirements.
Answer: E
QUESTION: 74 A developer is creating an entity which is mapped to a table that has a primary key constraint defined on two character columns and would like to use mapping defaults as much as possible to simplify the code Which two mapping options can be chosen? (Choose two.)
A. Use an @ld property that constructs a private field as a concatenation of two columns.
B. Use a separate class to map those two columns and use an @ldClass annotation to denote the primary key field or property in the entity.
C. Use a separate @Embeddable class to map those two columns and use an @Embeddedld annotation to denote a single primary key field or property in the entity.
D. Use a separate @Embeddable class to map those two columns and add two fields or properties to the entity, each marked as @ld, that correspond to the fields or properties in the embeddable class.
E. Use a separate class to map those two columns. Specify that class using @ldClass annotation on the entity class. Add two fields or properties to the entity, each marked as @ld, that correspond to the fields or properties in that separate class.
Answer: C, E
QUESTION: 75 A session bean’s business method throws an exception during execution. Which two are responsibilities of the Bean Provider when throwing the exception? (Choose two.)
A. For application exceptions, ensure that if the current transaction commits there will be no loss of data integrity.
B. For application exceptions, ensurethatthe current transaction will commit.
C. For system errors, when the client is remote, throw a java.rmi.RemoteException that wraps the original exception.
D. For checked exceptions from which the bean cannot recover, throw an EJBException that wraps the original exception.
Answer: A, D
QUESTION: 76 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.
Answer: C, D
QUESTION: 77 Given a stateless session bean with container-managed transaction demarcation, from which two methods can a developer access another enterprise bean? (Choose two.
A. beanconstructor
B. Timeout callback method
C. PreDestroy lifecycle callback method
D. PostConstruct lifecycle callback method
E. businessmethod fromthebusiness interface
Answer: B, E
QUESTION: 78
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
Answer: A
QUESTION: 79 Which two statements about the EJBContext. isCallerlnRole method are correct? (Choose two.)
A. Message-drivenbeans must NOT call the isCallerlnRole method.
B. The isCallerlnRole method may be called in a session bean constructor.
C. The isCallerlnRole method can be called in any business method of a stateless or a stateful session bean.
D. The isCallerlnRole method can be called in the PostConstruct and PreDestroy lifecycle callback methods of a stateless session bean.
Answer: A, C
QUESTION: 80
According to the Java Persistence API, a managed entity instance X becomes removed by
invoking the remove method on it or when it is a target of a cascaded remove operation.
Which statement is true?
A. After an entity has been removed its state will be restored to the Java defaults.
B. If a detached entity Y references Xthe HlegalStateException will be thrown.
C. If X is a new entity the remove operation is cascaded to entities referenced by X.
D. A removed entity X will be guaranteed to be removed from the database when the remove method returns.
Answer: C
QUESTION: 81
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. A. IfFoo is stateful, testl is true, and test2 is true,
B. If Foo is stateful, testl is true, and test2 is false,
C. If Foo is stateless, testl is true, and test2 is true.
D. If Foo is stateful, testl is false, and test2 is false,
E. If Foo is stateless, testl is true, and test2 is false.
F. If Foo is stateless, testl is false, and test2 is false
Answer: B, C
QUESTION: 82
Given two entities with a many-to-many bidirectional association between them:
11.
@Entity public class Employee!
12.
Collection projects;
13.
// more code here
14.}
and
11..Entity public class Project!
12.
Set<Employee> emps;
13.
// more code here
14.}
What set of annotations correctly defines the association?
A. @ManyToMany on the projects field, @ManyToMany(mappedBy=”projects”) on the
emps field
B. @ManyToMany(mappedBy=”emps”) on the projects field, @ManyToMany on the
emps field
C. @ManyToMany(targetEntity=Project.class) on the projects field,
@ManyToMany(mappedBy=”projects”) on the emps field
D. @ManyToMany(targetEntity=Project.class) on the projects field, @ManyToMany on the emps field
Answer: C
QUESTION: 83 A developer wants to perform programmatic access control inside EJB 3.0 session beans. This is needed because some permissions can be determined only at application runtime. Which method achieves this goal?
A. javax.ejb.EJBContext.getRollbackOnlyO
B. java.lang.SecurityManager.checkAccess(Thread t)
C. javax. interceptor. InvocationContext. getTargetO
D. javax. ejb. SessionContext.isCallerlnRole(String roleName)
E. javax. servlet. http. HttpServletRequest. getUserPrincipalQ
Answer: D
QUESTION: 84 A business method of a stateless session bean with a transaction attribute REQUIRED executes a Java Persistence query on a container-managed persistence context. Under which two conditions can the developer expect the persistence provider to ensure that all changes made to the persistence context in the transaction are visible to the processing of the query? (Choose two.
A. Theflushmode is NOT explicitly set.
B. Theflushmodeon the Query object is set toCOMMIT.
C. The refresh method on the EntityManager is called.
D. The flush mode on the persistence context issetto AUTO but is NOT specified for the Query object.
Answer: A, D
QUESTION: 85
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.
Answer: B, E
QUESTION: 86 A session bean’s business method invokes UserTransaction.setRollbackOnly and receives an HlegalStateException. Under which circumstance canthis happen?
A. The bean is using bean-managed transactions regardless of whether there is an active transaction.
B. There is no circumstance that would cause setRollbackOnly to throw an HlegalStateException.
C. The bean is using bean-managed transaction demarcation, and UserTransaction.begin has NOT been invoked.
D. The setRollbackOnly method is invoked within a bean-managed transaction, and UserTransaction.commit has NOT been invoked.
Answer: C
QUESTION: 87
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
Answer: C
QUESTION: 88
Which two statements are true about EJB 3.0 JMS message-driven beans? (Choose two.)
A. The developer can use JMS messageselector declarationsto restrict the messages that the bean receives.
B. The developer can associate the bean with a specific queue or topic using the resource-ref element of the deployment descriptor.
C. To achieve concurrent processing of more than one message at a time, more than one bean class must be associated with the same JMS queue.
D. The developer can usetheactivationConfigelementoftheMessageDrivenannotationto specify whether the bean should be associated with a queue or a topic.
Answer: A, D
QUESTION: 89 A developer wants to create a Java Persistence query that returns valid U.S. phone numbers (formatted as “123-456-7890” or “800-RUN-EJB3”) from a collection of differently formatted international phone numbers. The developer needs only those numbers that begin with 303. Which WHERE clause is correct?
A. WHEREaddr. phone LIKE 303J
B. WHERE addr. phone LIKE 303%’
C. WHEREaddr. phone LIKE303-_-_’
D. WHEREaddr.phone LIKE 303-%-%’
E. WHEREaddr. phoneLIKE 303–‘
F. WHERE addr. phone LIKE 303-%%%-%%%%’
Answer: E
QUESTION: 90
A session bean’s business method throws an exception during execution. Which two are responsibilities of the Bean Provider when throwing the exception? (Choose two.)
A. For application exceptions, ensure that if the current transaction commits there will be no loss of data integrity.
B. For application exceptions, ensurethatthe current transaction will commit.
C. For system errors, when the client is remote, throw a java.rmi.RemoteException that wraps the original exception.
D. For checked exceptions from which the bean cannot recover, throw an EJBException that wraps the original exception.
Answer: A, D
QUESTION: 91 Given: 10..Stateless
11.
@RunAs(“X”)
12.
public class SecureBeanOl implements SecureOl {
13.
@EJB Secure02 secure02;
23.
@RolesAllowed(“A”)
24.
public void methodA0 {
25.
secureO2.methodB0;
26.}
10..Stateless
11. public void SecureBean02 implements Secure02{
23.
@RolesAllowed(“A”)
24.
public void methodB0 {
A user who is only in role A invokes SecureOl. method . Assuming NO other
security-related metadata, what is the expected result?
A. An exception is thrown at Line 25.
B. Anexceptionisthrown at Line 13.
C. methodA cannot beinvokedbythis user.
D. The codeexecutes without raising an exception.
Answer: A
QUESTION: 92
A developer creates a stateful session bean that is used by many concurrent clients. The clients are written by other development teams and it is assumed that these clients might not remove the bean when ending their session. The number of concurrent sessions will be greater than the defined bean cache size. The developer must consider that the state of the session bean can be influenced by either passivation or timeout. Which three actions should the developer take to make the bean behave correctly in passivation and timeout situations? (Choose three.)
A. Release references to resources [email protected] method.
B. Re-establish references to resources in an @lnit annotated method.
C. Release references to resources [email protected] annotated method.
D. Release references to resources in a @PrePassivate annotated method.
E. Re-establish referencestoresources ina (.PostActivate annotatedmethod.
Answer: C, D, E
QUESTION: 93 A developer is writing a stateless session bean that is obtaining a transaction-scoped entity manager using injection and assumes the application defines one persistence unit. Which declaration is correct?
A. .ResourceEntityManagerem;
B. @PersistenceUnit EntityManager em;
C. @PersistenceContext EntityManager em;
D. @PersistenceUnit(“TransactionScoped”) EntityManager em;
Answer: C
QUESTION: 94 The Java Persistent API defines certain rules for persistent entities. These rules are required by the persistent provider to manage entities at runtime. Which statement is correct, assuming NO mapping descriptor is used?
A. Entitiesmust extenda persistent base class.
B. Entities must implement the interface PersistentEntityto bemanaged bythepersistent provider.
C. Afield withoutatransient modifier mustbeannotated as.Persistent tobe stored in the
database.
D. A field without a transient modifier must be annotated as (.Transient to NOT be stored in the database.
Answer: D
QUESTION: 95
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.
Answer: B
QUESTION: 96
Which two are restrictions of beans with bean-managed transactions? (Choose two.)
A. The NONSUPPORTED transaction attribute must be chosen.
B. Clients calling with a transactional context are prohibited and will result in an exception.
C. A stateful session bean must commit a started transaction before a business method returns.
D. A bean that starts a transaction must complete the transaction before it starts a new transaction.
E. A message-driven bean instance must commit a transaction before the onMessage method returns.
Answer: D, E
QUESTION: 97
Given two entities with a many-to-many bidirectional association between them:
11.
@Entity public class Employee!
12.
Collection projects;
13.
// more code here
14.}
and
11..Entity public class Project!
12.
Set<Employee> emps;
13.
// more code here
14.}
What set of annotations correctly defines the association?
A. @ManyToMany on the projects field,
@ManyToMany(mappedBy=”projects”) on the emps field
B. @ManyToMany(mappedBy=”emps”) on the projects field,
@ManyToMany on the emps field
C. @ManyToMany(targetEntity=Project.class) on the projects field,
@ManyToMany(mappedBy=”projects”) on the emps field
D. @ManyToMany(targetEntity=Project.class) on the projects field,
@ManyToMany on the emps field
Answer: C
QUESTION: 98 A developer is implementing an EJB 3.0 message-driven bean that will be associated with a JMS topic. The bean must NOT miss any messages published to the topic, even if the EJB server is down for some time. Which is correct?
A. The developershouldset the activation config properly subscriptionDurabilitytovalueDurable.
B. The developer should set the activation config property subscriptionDurability to value NonDurable.
C. Clients must take care of resending messages to the topic in case of missing message acknowledgements.
D. The developer does NOT need to do anything, because as long as the EJB server is down no client can publish messages to the topic.
Answer: A
QUESTION: 99
Which two can be specified by both the Bean Provider and the Application Assembler?
(Choose two.)
A. security roles
B. enterprise bean type
C. transaction attributes
D. session bean’s state-management type
E. enterprise bean’s remote home interface
F. enterprise bean’s local business interface
Answer: A, C
QUESTION: 100 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
Answer: B, D
QUESTION: 101
A User entity is in a one-to-many relationship with a Book entity. A developer writes a
query to delete users that have a first name of Fred1or ‘Ginger’, and writes the following
Java Persistence query language statement:
DELETE FROM User u WHERE u.name IN (Fred’, “Ginger)
If the query fails with a PersistenceException, what can be the cause?
A. The syntax of the query is NOT correct.
B. Thequerycauses a foreign key integrity constrainttobe violated.
C. The database doesNOThave any userswith thenameFred’or ‘Ginger’.
D. Theentities corresponding to the userswiththe nameFred’or’Ginger’ arealreadybeing managedbythe persistencecontext.
Answer: B
QUESTION: 102
Given :
public class MyException extends Exception {}
The business interface Foo declares a method work0: I.public void work0 throws
MyException;
The bean class FooBean contains the following:
10..Stateless
II. @Remote(Foo.class)
12.
public class FooBean {
13.
public void workQ throws MyException {
14.
//do some work not shown here
15.
throw new MyException0;
16.}
Assuming there is no deployment descriptor, which statement is true when the workQ
method is invoked by a client with an existing transaction context and execution reaches
Line 15?
A. The container does notroll back thetransaction.
B. The clientreceives javax.ejb.EJBTransactionRequiredException.
C. The clientreceivesjavax.ejb.EJBTransactionRolledbackException.
D. Thecontainer marks the transactionforrollback by calling the EJBContext.setRollbackOnly
method.
Answer: A
QUESTION: 103
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.
Answer: C
QUESTION: 104 A developer is working on a project that includes both EJB 2.1 and EJB 3.0 session beans. A lot of business logic has been implemented and tested in these EJB 2.1 session beans. Some EJB 3.0 session beans need to access this business logic. Which design approach can achieve this requirement?
A. Add adapted home interfaces to EJB 3.0 session beans to make EJB 3.0 and EJB 2.1 session beans interoperable.
B. Add EJB 3.0 business interfaces to existing EJB 2.1 session beans and inject references to these business interfaces into EJB 3.0 session beans.
C. No need to modify existing EJB 2.1 session beans. Use the @EJB annotation to inject a reference to the EJB 2.1 home interface into the EJB 3.0 bean class.
D. No need to modify existing EJB 2.1 session beans. Use the @EJB annotation to inject a reference to the EJB 2.1 component interface into the EJB 3.0 bean class.
Answer: C
QUESTION: 105 A Java Persistence application wants to use optimistic locking. Which statement that describes the functionality of optimistic locking is correct?
A. The Version attribute of an entity using optimistic locking can be mapped to a secondary table.
B. Optimistic locking can be used by Java Persistence applications to set optimistic locks on tables in the database.
C. The Version attribute of an entity using optimistic locking is verified each time the instance is loaded from the database.
D. Optimistic locking ensures that updates or deletes are consistent with the current state of the database and that intervening updates are not lost.
Answer: D
QUESTION: 106
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