Oracle Java EE 6 Enterprise JavaBeans Developer Certified Expert

QUESTION NO: 1
Suppose developer wants to create an EJB component that performs data validation every hour. Given the following Stateless session bean:

What is the minimum modification you would need to make to the bean to support notification from the TimerService once the timer expires?

A. Modify the verify external orders method to look like this:
@EjbTimeOut
private void verifyExternalOrders () {
/ / do something
} B. Modify the verify external orders method to look like this:
@TimedOut
private void verifyExternalOrders () {
/ / do something
} C. Modify the verify external orders method to look like this: @ejbTimeOut private void verifyExternalOrders () { / / do something } D. Modify the verify external orders method to look like this: @TimeOut private void verifyExternalOrders () { / / do something }

Correct Answer: D

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QUESTION NO: 2
Which must result in the destruction of a stateful session bean?

A. The stateful session bean is chosen as a last recently used (LRU) victim for passivation. B. The server in which the stateful session bean was created is restarted. C. A client calls an @Remove method and the method returns successfully. D. The stateful session bean participates in a transaction that is rolled back.

Correct Answer: C

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QUESTION NO: 3
Which three methods can Bean Developer use in any EJB compliant container implementing the full Java EE6 product? (Choose three.)

A. FileInputStream.read B. DataSource.getConnection C. QueueConnection.createQueueSession D. EJBContext.getCallerPrincipal E. Executors.newSingleThreadExecutor F. Class.getClassLoader

Correct Answer: B,C,D

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QUESTION NO: 4
Suppose an EJB named HelloWorldBean is deployed as a standalone ejb-jar. Assuming the HelloWorldBean is implemented as follows:

Which HelloWorldBean methods are accessible by another EJB within the same ejb-jar?

A. All of the public methods declared in HelloWorld and all of the methods declared in HelloWorldBean B. All of the methods declared in HelloWorldBean C. All of the methods declared in HelloWorld and HelloWorldBean D. All of the public methods declared in HelloWorldBean

Correct Answer: D

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QUESTION NO: 5
Assume an EJB application is comprised of the following EJB fragment:

You have been asked to convert the type of InventoryReportBean into a singleton session bean. How would you achieve this task?
Exhibit C:

Exhibit D:

A. Create an ejb-jar.xml file, and override the annotation configuration information as in exhibit C above. B. Keep InventoryReportBean as it is, modifying the internal structure to function as a singleton C. Change the @Stateless annotation of InventoryReportBean to @Singleton D. Create an ejb-jar.xml file, and override the annotation configuration information as in exhibit D above.

Correct Answer: C

QUESTION NO: 6
Given the following stateless session bean:

How would you change the EJB to prevent multiple clients from simultaneously accessing the sayHello method of a single bean instance?

A. Convert sayHello into a synchronized method B. Convert generateLocalizehello into a synchronized method C. Convert HelloWordBean into a singleton bean D. No changes are needed E. Execute the call to generateLocalizedHello in a synchronized block

Correct Answer: D

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QUESTION NO: 7
An enterprise developer has received ejb-jars from multiple Bean Provides and wants to combine them into a single ejb-jar as well as altering the method permissions on some of the beans without recompiling any of the code contained in the ejb-jar. Which is correct?

A. Application Assembler is the most appropriate role to perform this task. B. Either a Deployer or System Administrator role many perform this task. C. Bean Provide is the only role that can perform this task. D. Deployed is the most appropriate role to perform this task. E. This problem cannot be solved using an EJB 3.x-compliant approach.

Correct Answer: A

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QUESTION NO: 8
A developer implements a system in which transfers of goods are monitored. Each transfer needs a unique ID for tracking purposes. The unique ID is generated by an existing system which is also used by other applications. For performance reasons, the transaction that gets the unique ID should be as short as possible. The scenario is implemented in four steps which are implemented in four business methods in a CMT session bean:

These methods are called by the addTransfer method of a second CMT session bean in the following order:
checkGooods, getUniqueId, checkAmount, storeTranfer
Assuming no other transaction-related metadata, which is the correct set of transaction attributes for the methods in the session beans?

A. 0.addTransferNOT_SUPPORTED 1.checkGoodsREQUIRED 2.getUnigueIdREQUIRES_NEW 3.checkAmountsNOT_SUPPORTED 4.storeTransferMANDATORY B. 0.addTransferREQUIRED 1.checkGoodsREQUIRED 2.getUnigueIdREQUIRES_NEW 3.checkAmountsNEVER 4.storeTransferMANDATORY C. 0.addTransferREQUIRED 1.checkGoodsREQUIRED 2.getUnigueIdREQUIRES_NEW 3.checkAmountsNOT_SUPPORTED 4.storeTransferMANDATORY D. 0.addTransferREQUIRED 1.checkGoodsREQUIRED 2.getUnigueIdREQUIRED 3.checkAmountsREQUIRED 4.storeTransferREQUIRED

Correct Answer: C

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QUESTION NO: 9
Which API must an EJB 3.1 container make available to enterprise beans at runtime?

A. The MIDP 2.0 API B. The JXTA 1.1 API C. The Java SE 5 JDBC API D. The Java SE 6 JNDI API

Correct Answer: D

Oracle Java EE 6 Enterprise JavaBeans Developer Certified Expert - 1Z0-895 Exam Questions