Java EE 6 Enterprise JavaBeans Developer Certified Expert

Here you have the best Oracle 1z0-895 practice exam questions

You have 90 total questions to study from
Each page has 5 questions, making a total of 18 pages
You can navigate through the pages using the buttons at the bottom
This questions were last updated on October 30, 2025
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Question 1 of 90

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.)

Load-balancing is NOT a guarantee for all EJB 3.1 containers.

Clustering is guaranteed to be supported by the EJB 3.1 container.

Thread pooling can be optimized by the Bean Provider programmatically.

Bean Providers are NOT required to write code for transaction demarcation.

Support for server fail-over is guaranteed for an EJB 3.1-compliant application server.

EJB 3.1 compliant components are guaranteed to work within any Java EE 6 application server

Correct Answer: A, D, F

Question 2 of 90

Which API must an EJB 3.1 container make available to enterprise beans at runtime?

The JXTA 1.1 API

The MIDP 2.0 API

The Java SE 6 JNDI API

The Java SE 5 JDBC API

Correct Answer: C

Question 3 of 90

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 ();
4. }
Assuming there is not an ejb-jar.xml file, which code can be inserted into Lines 4-6 below to define the bean with the ejb name of BarBean?
1. package acme;
2. import javax.ejb.*;
3. import java.io.*;
4.
5.
6.
7. }

@Stateful public class BarEJB implements Bar { public void bar () {}

@Stateful (name = "Bar") public class Barbean implements Bar { public void bar () {}

@Stateful public class BarBean implements Serializable, Bar { public void bar () {}

@Stateful (name = "bar") public class BarBean implements Serializable, Bar {

Correct Answer: C

Question 4 of 90

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.)

Release references to resources in a @Remove annotated method.

Re-establish references to resources in an @Init annotated method.

Release references to resources in a @PreDestroy annotated method.

Release references to resources in a @PrePassivate annotated method.

Re-establish references to resources in a @PostActivate annotated method.

Correct Answer: C, D, E

Question 5 of 90

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.)

The value of helper variable C is used to create the value of Instance variable B in the beans no-arg constructor.

The value of helper variable C is used to create the value of instance variable B in a @postcreate annotated method.

The value of helper variable C is used to create the value of instance variable B in a @postActivate annotated method.

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.

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

Correct Answer: C, E