1Z0-895オンライン試験、1z0-064過去問 無料
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Java Platform, Enterprise Edition 6 Enterprise JavaBeans Developer Certified Expert Exam
試験番号:1Z0-895
関連資格:Oracle Certified Expert, Java EE 6 Enterprise JavaBeans Developer
受験のための準備
Oracle University おすすめ研修サービス
Business Component Development with EJB Technology, Java EE 6（英語）
テスト内容チェックリスト
Java EEの紹介
セッションBeanの実装
セッションBean へのアクセス
セッションBeanの高度な概念
シングルトンセッションBean
メッセージングを使用した Java EE アプリケーションの開発
メッセージ駆動型Beanの開発
タイマーサービスの使用
インターセプタクラスおよびメソッドの実装
トランザクションの実装
セキュリティーの実装
EJB テクノロジのベストプラクティスの使用
試験番号：1Z0-895問題集試験科目：Java Platform, Enterprise Edition 6 Enterprise JavaBeans Developer Certified Expert Exam
最近更新時間：2015-12-24
問題と解答：全90問 1Z0-895オンライン試験
100％の返金保証。1年間の無料アップデート。
試験番号：1z0-064問題集試験科目：Oracle Database 12c: Performance Management and Tuning
最近更新時間：2015-12-24
問題と解答：全84問 1z0-064過去問 無料
100％の返金保証。1年間の無料アップデート。
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NO.1 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. No changes are needed
B. Convert generateLocalizehello into a synchronized method
C. Execute the call to generateLocalizedHello in a synchronized block
D. Convert sayHello into a synchronized method
E. Convert HelloWordBean into a singleton bean
Answer: A
1Z0-895番号
Explanation:
Reference: The Java Tutorial, Synchronized Methods
NO.2 Suppose an EJB component is named HelloWorldBean is deployed as a standalone ejb-jar.
Assuming the HelloWorldBean is implemented as follows:
Which types of clients are guaranteed to have access to HelloWorldBean:
A. Java EE application client container applications
B. Java EE web-tier component applications deployed in the same container
C. Java EE ejb component applications deployed in the same container
D. Java EE ejb components within the same ejb-jar
Answer: D
1Z0-895赤本
NO.3 Which is a valid use of the EJB 3.x TimerHandle object?
A. To adapt EJB 3.x timers to EJB 2.1 and earlier timers
B. To obtain a seralizable timer handle that may be persisted
C. To retrieve all active timers associated with this bean
D. To be implemented by EJB classes that are to be registered with the timer service
Answer: B
Explanation:
The TimerHandle interface allows the bean provider to obtain a serializable timer handle that may be
persisted.
Since timers are local objects, a timer handle must not be passed through a bean's remote business
interface, remote interface or web service interface.
Reference: javax.ejb, Interface TimerHandle
NO.4 A developer implements a session bean which acts as a session facade for an application. This
means that clients will only see this session bean's interface which offers the application interface,
where are three distinct roles known at development time: "user", "admin", and "guest". The
majority of the methods will be used by role "user". All methods must have role permissions active
and roles may be added or changed in the future.
Which two scenarios are correct? (Choose two.)
A. The developer defines individual method permissions for the methods used by roles "user "guest",
and "admin" In the deployment descriptor.
B. The developer annotates the bean class with @DenyAll and annotates the methods used by role
"user", "guest", or "admin" individually.
C. The developer annotates the bean class with @PermitAll and annotates the methods used by role
"guest" or "admin" individually.
D. The developer annotates the bean class with @RolesAllowed("user") and annotates the methods
used by role "guest" or "admin" individually.
E. The developer defines a method permission with method name "*" and role "user" and adds
individual method permissions for the methods used by roles "guest" and "admin" in the deployment
descriptor.
Answer: D,E
1Z0-895パッケージ
NO.5 A developer needs to deliver a large-scale enterprise application that connects developer
chooses an EJB 3.1-compliant application server, which three are true about the EJB business
component tier? (Choose three.)
A. Load-balancing is NOT a guarantee for all EJB 3.1 containers.
B. EJB 3.1 compliant components are guaranteed to work within any Java EE 6 application server
C. Thread pooling can be optimized by the Bean Provider programmatically.
D. Bean Providers are NOT required to write code for transaction demarcation.
E. Support for server fail-over is guaranteed for an EJB 3.1-compliant application server.
F. Clustering is guaranteed to be supported by the EJB 3.1 container.
Answer: A,B,D
1Z0-895無料試験対策
Explanation:
The EJB tier hosts the business logic of a J2EE application and provides system-level services to the
business components problems include state maintenance, transaction management, and availability
to local and remote clients.
NO.6 FooBean and BarBean are both EJB 3.x stateless session beans with bean-managed transaction
demarcation. The business method foo in FooBean starts a UserTransaction and invokes the business
method bar in BrBean.
Given: What is the expected result of this method invocation assuming control reaches Line 12?
A. The container discards the BarBean bean instance.
B. FooBean.foo method receives a javax.ejb.EJBException that wraps MyAppException.
C. FooBean.foo method receives MyAppException.
D. FooBean.foo method receives javax.transaction.TransactionRolledbackException.
Answer: D
1Z0-895資格認定
Explanation:
The transaction will roll back.
Note:
* In bean-managed transaction demarcation, the code in the session or message-driven bean
explicitly marks the boundaries of the transaction. Although beans with container-managed
transactions require less coding, they have one limitation: When a method is executing, it can be
associated with either a single transaction or no transaction at all. If this limitation will make coding
your bean difficult, you should consider using bean-managed transactions.
Reference: The Java EE 5 Tutorial, Bean-Managed Transactions
NO.7 Given singleton bean FooEJB:
How many distinct FooEJB bean instances will be used to process the code on the lines 101-105?
A. 0
B. 1
C. 2
Answer: B
1Z0-895コマンド 1Z0-895対策
Explanation:
Java has several design patterns Singleton Pattern being the most commonly used. Java Singleton
pattern belongs to the family of design patterns, that govern the instantiation process. This design
pattern proposes that at any time there can only be one instance of a singleton (object) created by
the JVM.
NO.8 A developer creates a stateless session bean, EmployeeServiceBean, and its interface,
EmployeeService. The session bean uses two annotated entity classes, Employee.class and
Department.class.
Which two package options can the developer use when creating a deployable EAR? The proposed
directory structure is listed for each option. (Choose two)
A. Emp.ear emp-ejb.jar persistence.xml Employee.class
Department.class EmployeeService.class EmployeeServiceBean.class
B. Emp.ear emp-ejb.jar META-INF/persistence.cml Employee.class Department.class
EmployeeService.class EmployeeServiceBean.class
C. Emp.ear emp-ejb.jar META-INF/persistence.xml EmployeeService.class EmployeeServiceBean.class
lib/emp-classes.jar Employee.class Department.class
D. Emp.ear META-INF/orm.xml EmployeeService.class EmployeeServiceBean.class Employee.class
Department.class
Answer: B,C
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