Question 1

ejbCreate() method of CMP bean returns.

java

null
Primary Key class
Home Object
Remote Object

Answer

Correct Option: A

Question 2

How can a EJB pass it’s reference to another EJB ? Which of the following is correct syntax for an Abstract class ?

java

abstract double area() { }
abstract double area()
abstract double area();
abstract double area(); { }

Answer

Correct Option: C

Question 3

The EJB specification architecture does NOT define

java

transactional components.
client side security and encryption.
distributed object components.
server-side components.

Answer

Correct Option: B

Question 4

What executes EJB components?

java

a web server
an EJB container
an application server
a database server

Answer

Correct Option: B

Question 5

Which describes best an EJB handle?

java

An EJB handle is used to handle exceptions when accessing EJB objects.
An EJB handle is used to store a reference to a specific EJB object.
An EJB handle is part of the Home interface.
An EJB handle is used for local references inside the EJB container.

Answer

Correct Option: B

Question 6

When a developer declares an EJB local reference, what element does NOT need to be specified?

java

JNDI binding for local home interface
Local home interface
Home interface
ejb-ref-type

Answer

Correct Option: C

Question 7

For a stateful session bean, which method is activated by the container to save the state of the bean?

java

ejbCreate()
ejbPassivate()
ejbStore()
ejbSave()

Answer

Correct Option: C

Question 8

The EJB SessionContext can be used to get information about users calling session enterprise beans. Which information can NOT be retrieved?

java

transactional information
security information
data source information
timer service information

Answer

Correct Option: C

Question 9

Client programs that access EJBs make use of the Java Naming and Directory Interface (JNDI). To get access to a Person entity bean, which methods can be used? (2 correct answers). Assume the following code is used to establish the initial context:
Propert

java

PersonHome ph = ctx.lookup("java:comp/env/ejb/Person");
PersonLocalHome ph=(PersonLocalHome)ctx.lookup("java:comp/env/ejb/PersonLocalHome");
PersonHome ph = ctx.lookup("java:comp/env/ejb/PersonHome");
PersonHome ph = javax.rmi.PortableRemoteObject.narrow(ctx, PersonHome.class)
PersonHome ph = (PersonHome)javax.rmi.PortableRemoteObject.narrow(ctx,PersonHome.class)

Answer

Correct Option: B,E

Question 10

What would be a typical use of ejbSelect() methods?

java

Using ejbSelect() methods in session beans for specifying the selection criteria for a list
Using ejbSelect() methods within ejbHome methods to return entities
Using ejbSelect() methods to access fields of a bean instance
Using ejbSelect() methods to perform operations not specific to a entity instance

Answer

Correct Option: D

Question 11

CMP fields in EJB 2.x are defined via

java

static fields in the entity bean
an abstract persistence schema
EJB Query Language definitions in the deployment descriptor
the persistence-type attribute in the deployment descriptor

Answer

Correct Option: B

Question 12

In order to use Container Managed Relations (CMR) fields in CMP entity beans, the developer Must

java

declare the CMR member fields and add ejb-relationship definitions in the deployment descriptor
implement the get/set methods for the CMR fields and add ejb-relationship definitions in the deployment descriptor
implement the ejbLoad() and ejbStore() methods and add ejb-relationship definitions in the deployment descriptor
declare abstract get/set methods for the CMR field and add ejb-relationship definitions in the deployment descriptor

Answer

Correct Option: D

Description: Java - EJB Quiz
Number of Questions: 12
Created by: Aliensbrain Bot
Tags: java ejb

EJB Quiz

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