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試験番号：1Z0-895 全真問題集試験科目：「Java Platform, Enterprise Edition 6 Enterprise JavaBeans Developer Certified Expert Exam」
最近更新時間：2014-06-19
問題と解答：90
試験番号：1Z0-535 学習教材試験科目：「Primavera P6 Enterprise Project Portfolio Management Essentials」
最近更新時間：2014-06-19
問題と解答：70
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NO.1 A developer writes a stateful session bean FooBean with one remote business interface Foo.
Foo defines an integer / setter method pair implemented as:
NO.2 A stateful session bean contains a number of instance variables. The types of instance
variables A and B are serializable. Instance variable B is a complex type which is populated by many
business calls, and can, therefore, not be refilled by the client without starting all over. A helper
instance variable C is defined as having a Serializable type, and can hold all the information which is
in variable B.
for example, B is of type XML-DOM tree and C of Type String.
Which two solutions, when combined, maintain the state of the session bean over a passivation and
activation by the container? (Choose two.)
A. The value of helper variable C is used to create the value of Instance variable B in the beans
no-arg constructor.
B. The value of helper variable C is used to create the value of instance variable B in a @postcreate
annotated method.
C. The value of helper variable C is used to create the value of instance variable B in a @postActivate
annotated method.
D. Instance variable A must be made null and instance variable B must be converted to a Serializable
type and assigned to another instance variable in a @preDestroy annotated method.
E. Instance variable A must be defined transient. Instance variable B must be converted to a
Serializable type, set to null, and assigned to the instance variable C in a @PrePassivate annotated
method.
Answer: C,E
Oracle問題集 1Z0-895方法 1Z0-895教育 1Z0-895
NO.3 public void setValue (int i) {value = i; }
NO.4 private int value;
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. Clustering is guaranteed to be supported by the EJB 3.1 container.
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. EJB 3.1 compliant components are guaranteed to work within any Java EE 6 application server
Answer: A,C,F
Oracle割引 1Z0-895認定資格 1Z0-895科目 1Z0-895認定資格
Explanation:
The EJB tier hosts the business logic of a J2EE application and provides system-level services to the
business componentsproblems include state maintenance, transaction management, and
availability to local and remote clients.
The EJB 3.1 specification does not address "high-end" features like clustering (not B), load-balancing
(A) and fail-over (not E).
F: The target platform for EJB is Java EE.
NO.6 }
A. @Stateful
public class BarEJB implements Bar {
public void bar () {}
B. @Stateful (name = "Bar")
public class Barbean implements Bar {
public void bar () {}
C. @Stateful
public class BarBean implements Serializable, Bar {
public void bar () {}
D. @Stateful (name = "bar")
public class BarBean implements Serializable, Bar {
public void bar () throws java.rmi.RemoteException {}
Answer: C
Oracle取得 1Z0-895取得 1Z0-895教材 1Z0-895会場 1Z0-895内容
7. A developer creates a stateful session bean that is used by many concurrent clients. The clients
are written by other development team; 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 in a @Remove annotated method.
B. Re-establishreferences to resources in an @Init annotated method.
C. Release references to resources in a @PreDestroy annotated method.
D. Release references to resources in a@PrePassivate annotated method.
E. Re-establish references to resources in a @PostActivate annotated method.
Answer: C,D,E
Oracle 1Z0-895問題集 1Z0-895 1Z0-895赤本 1Z0-895方法 1Z0-895資格
NO.7 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 an appropriate solution? (Choose two.)
A. To render a GUI for mobile clients.
B. As a container for web-tier components including JSP .
C. As a Web service endpoint accessed by non-Java clients.
D. To receive and respond to HTTP Post requests directly from a web browser.
E. As an online shopping cart which can persist across multiple sessions with a single client.
Answer: C,E
Oracle 1Z0-895試験 1Z0-895模擬 1Z0-895
NO.8 Which two statements are true? (Choose two.)
A. Typically, remotely accessible objects should be coarse-grained.
B. If a client accesses an enterprise bean locally such access must be mediated by the EJB container.
C. A given enterprise bean's transaction information is immutable because it is deployed across
various containers.
D. If a container provides services NOT required by the EJB specification, then that container is NOT
considered to be an EJB container.
E. An enterprise bean's transaction Information can be accessed by external tools only if the
information is contained in an XML deployment descriptor.
Answer: B,D
Oracle問題 1Z0-895番号 1Z0-895練習 1Z0-895 1Z0-895ガイド
Explanation:
D: An EJB container is nothing but the program that runs on the server and implements the EJB
specifications. EJB container provides special type of the environment suitable for running the
enterprise components. Enterprise beans are used in distributed applications that typicallycontains
the business logic.
4. Assume you would like to receive notification from the container as a stateless session bean
transitions to and from the ready state.
Which of the following life cycle back annotations would you use? (Choose one.)
A. @PostConstruct, @PostDestroy
B. @PostConstruct, @PreDestroy
C. @PreConstruct, @PostDestroy
D. @PostConstruct, @PostDestroy, @Remove
E. @PostConstruct, @PreDestroy, @Remove
Answer: B
Oracle日記 1Z0-895合格率 1Z0-895攻略 1Z0-895資格 1Z0-895問題集
Explanation:
The Lifecycle of a Stateless Session Bean The EJB container typically creates and maintains a pool of
stateless session beans, beginning the stateless session bean's lifecycle. The container performs any
dependency injection and then invokes the method annotated @PostConstruct, if it exists. The bean
is now ready to have its business methods invoked by a client.
At the end of the lifecycle, the EJB container calls the method annotated @PreDestroy, if it exists.
The bean's instance is then ready for garbage collection.
Lifecycle of a Stateless Session Bean:
Note: An enterprise bean goes through various stages during its lifetime, or lifecycle. Each type of
enterprise bean (stateful session, stateless session, singleton session, or message-driven) has a
different lifecycle.
Reference: http://docs.oracle.com/javaee/ 6 /tutorial/doc/giplj.html
5. Which API must an EJB 3.1 container make available to enterprise beans at runtime? (Choose
one)
A. The JXTA 1.1 API
B. The MIDP 2.0 API
C. The Java SE 6 JNDI API
D. The Java SE 5 JDBC API
Answer: C,D
Oracle 1Z0-895模擬 1Z0-895
6. A developer wants to write a stateful session bean using the following interface as local
business interface:
1.package acme;
2.public interface Bar {
3.public void bar ();
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