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NO.1 A developer writes a stateful session bean called FooBean.
Which code can be inserted before Line 11 of the FooBean class to define a TYPE-level
environment dependency on a JMS Topic?
11. public class FooBean {
12.
13. public void fooQ {}
14.
15.}
A. @Resource(type=Topic. class)
B. @Resource(name="topicRef) private static Topic topic;
C. .ResourceprivateTopic topic;
D. @Resource(name="topicRef', type=Topic. class)
Answer: D
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NO.2 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)
Answer: C
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NO.3 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
Answer: B,D
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NO.4 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
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NO.5 A developer writes a session bean which uses several configurable constants.
The constants are all defined as String types in JNDI. This cannot be changed because existing code is
using the same JNDI information. One of the constants is a date, represented in string format. This date
constant is used in multiple business methods of this session bean, actually as a Date object.
Converting strings to dates is an expensive operation; therefore, the developer wants to do as little
converting as possible.
Which two scenarios can be used to prevent converting from String to Date in every business method?
(Choose two.)
A. Loadthe date string in an instance Date type variablebyannotation of the instance variable and let the
container autoconvert it to a Datetypeautomatically.
B. Load thedate string in an instance String type variablebyannotation of this instance
variableandconvertitto aDatetype object in the beans constructor.
C. Load thedatestringinaninstanceString typevariableby annotationof this instance variable and convert it
to aDate typeobjectin a@PostConstructannotatedmethod.
D. Load the date string in an instance Date typevariableby annotation ofasetter method that takes a String
and which carries out the conversion and assigns the value totheinstance variable.
Answer: C,D
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NO.6 </container-transaction>
Which statement is correct about the business methods in MrBean?
A. All methods have transactionattributeREQUIRED.
B. All methodshavetransaction attributeMANDATORY.
C. All methodshavetransaction attribute NONSUPPORTED.
D. Methods with name store Stuff have transaction attributeMANDATORYand all other methods have
transaction attribute REQUIRED.
E. MethodswithnamestoreStuffhavetransaction attribute MANDATORY andall othermethods have
transaction attribute NONSUPPORTED.
F. Methodswithname store Stuff haveatransaction attribute REQUIRED andallother methods have
transaction attribute NOT SUPPORTED.
Answer: E
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24.Which four are defined in the EJB specification as a standard EJB role? (Choose four.
A. End Point Provider
B. Persistence Provider
C. NameSpace Provider
D. JSF Interface Provider
E. ApplicationAssembler
F. EJBContainerProvider
G. EnterpriseBeanProvider
Answer: B,E,F,G
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25.The syntax of the ORDER BY clause is defined in the Java Persistence API
asorderby_clause ::=ORDER BY orderbyjtem {, orderbyjtem}* Which statement is correct about the use of
ORDER BY clauses?
A. Only literals can be specified as an orderbyjtem.
B. Fields or properties of any type can be specified as an orderbyjtem.
C. The ordering must be specified if two or more orderbyjtem methods are provided.
D. If two orderbyjtem methods are provided the left orderbyjtem has the higher precedence.
Answer: D
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26.A developer is writing implementation code for an EJB 3.0 message-driven bean class that processes
booking requests. Within the business logic of the onMessage method, a temporary problem can occur. In
that case the developer wants to make sure that the booking request is processed again in 30 minutes.
Which two can the developer select? (Choose two.)
A. Throwa runtimeexception torollbackthetransaction.
B. Call setRollbackOnly on the MessageDrivenContext interface.
C. Makeuseof the TimerService, and implement the TimedObject interface.
D. Make use of the TimerService,implement areprocess method, and annotate it with @Timeout.
E. Throw an application exception, and addtheretry-after attribute to the deployment descriptor.
Answer: C,D
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27.Given a set of CMT bean methods with the following transaction attributes:
Method M1=SUPPORTS
Method M2=REQUIRED
Method M3=NOT_SUPPORTED
Method M4=REQUIRES_NEW
And the following method invocation sequence:
Method M1 invokes Method M2
Method M2 invokes Method M3
Method M1 invokes Method M4
If Method M1 is invoked by a method that does NOT have a transaction context, which describes a
possible scenario?
A. Method M1notransaction
MethodM2new transaction
Method M3no transaction
MethodM4newtransaction
B. Method M1notransaction
Method M2Container throws EJBTransactionRequiredException
C. MethodM1new transaction
Method M2runs in same transaction as M1
Method M3Container throws TransactionNotSupportedException
D. Method M1no transaction
Method M2new transaction
Method M3Container throws TransactionNotSupportedException
Answer: A
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28.OldBarBean is a stateless session bean written to the EJB 2.1 API with remote home interface.
OldBarHome and remote component interface OldBar. FooBean is a stateless session bean written to the
EJB 3.0 API.
OldBarBean and FooBean are the only EJBs packaged in the ejb-jar. The FooBean portion of the ejb-jar.
xml also declares an ejb-ref whose ejb-ref-name is ejb/oldBar. The ejb-ref is linked to OldBarBean. There
are no other ejb dependencies defined.
A business method foo in FooBean needs to access OldBarBean.
Which is portable code to achieve this goal?
A. .Remote
private OldBar oldBar;
B. public void fooQ
{
try
{
InitialContext ic = new InitialContextO;
Object obj = ic.lookup("ejb/oldBar")
;
OldBarHome OldBarHome
=
(OldBarHome) PortableRemoteObject.narrow(obj,
OldBarHome.class)
;
OldBar oldBar = oldBarHome.createO;
C. @EJB private OldBarHome OldBarHome;
public void fooQ
{
try
{
OldBar oldBar = oldBarHome.createQ;
D. public void fooQ
{
try
{
InitialContext ic = new InitialContextO;
OldBarHome OldBarHome
=
(OldBarHome) ic.lookup("ejb/oldBar")
;
OldBar oldBar = oldBarHome.createQ;
Answer: C
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29.DRAG DROP
Click the Task button.
A Department entity is in a one-to-many relationship with an Employee entity. A developer has been
asked to write a Java Persistence query to update the set of employees who are in the department 'HR'
by setting their department to null.
Construct a query using the Java Persistence query language to perform this task.
Construct a valid Java Persistence query by dragging and dropping the syntax fragements.
Answer:
NO.7 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
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NO.8 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.
Answer: B,C
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