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ejb questions

 
Timber Lee
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Posts: 157
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2.
Which one of the following statements correctly describes the differences between CMP and BMP entity beans related to finder methods?
Choice 1
CMP finders return a primary key or a Collection of EJBObjects. BMP finders return a primary key or a Collection thereof.
Choice 2
CMP finders return only a Collection of primary keys. BMP finders return only a Collection of EJBObjects.
Choice 3
CMP finders return an EJBObject or a Collection thereof. BMP finders return a primary key or a Collection thereof.
Choice 4
CMP finders return a primary key or a Collection thereof. BMP finders return an EJBObject or a Collection thereof.
Choice 5
CMP finders return only a Collection of EJBObjects. BMP finders return only a Collection of primary keys.

3.
Which one of the following is NOT true about the finder methods of a local home interface for a BMP entity bean?
Choice 1
Finder methods must be declared public.
Choice 2
Finder methods must throw ObjectNotFoundException.
Choice 3
Finder method names must start with the prefix "find."
Choice 4
The entity bean can declare only one findByPrimaryKey method.
Choice 5
Finder methods must return an EJBLocalObject or a collection thereof.

4.After serializing an EJB object handle, which one of the following methods is used to re-acquire the EJB object from a serialized handle?
Choice 1
ejbCreate()
Choice 2
getEJBHome()
Choice 3
getEJBHandle()
Choice 4
ejbRestore()
Choice 5
getEJBObject()

5.
Code
<ejb-jar>
<enterprise-beans>
<session>
<ejb-name>testBean/TestBean</ejb-name>
<home>testBean.TestHome</home>
<remote>testBean.TestRemote</remote>
<ejb-class>testBean.TestBean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Container</transaction-type>
</session>
</enterprise-beans>

<assembly-descriptor>
<container-transaction>
<trans-attribute>Supports</trans-attribute>
</container-transaction>
</assembly-descriptor>
</ejb-jar>
Given the above deployment descriptor fragment, which one of the following describes the behavior of this bean?
Choice 1
The bean uses a custom primary key.
Choice 2
The bean is forced to passivate after ten seconds.
Choice 3
The bean implementation class is not part of a Java package.
Choice 4
This bean may execute without a transaction context.
Choice 5
This bean is re-entrant.

6.
What deployment descriptor information is only changed by the Bean Provider?
Choice 1
Relationship role source element
Choice 2
Environment entries
Choice 3
Relationship names
Choice 4
Binding of enterprise bean references
Choice 5
Message-driven bean message selector

7.
Which one of the following statements correctly describes the function of the <message-selector> element in the MDB deployment descriptor?
Choice 1
It specifies which type of messages (TextMessage, StreamMessage, etc.) will be routed by JMS to the MDB.
Choice 2
It specifies a regular expression used by JMS to determine which messages to route to the MDB.
Choice 3
It specifies which message header properties are selected by the container to be passed to the MDB.
Choice 4
It specifies the SQL-92 compatible query used by JMS to determine which messages to route to the MDB.
Choice 5
It specifies an Object Query Language (OQL) compatible query used by JMS to determine which messages to route to the MDB.

8,
Scenario
In order to publish a MapMessage to a Topic, a JMS client has to use a set of helper JMS objects.
Referring to the scenario above, which one of the following is a correct sequence to look up and create the JMS helper objects?
Choice 1
Topic, TopicConnectionFactory, TopicConnection, TopicPublisher, TopicSession, MapMessage
Choice 2
TopicConnectionFactory, TopicConnection, TopicSession, TopicPublisher, MapMessage, Topic
Choice 3
Topic, TopicConnectionFactory, TopicSession, TopicConnection, MapMessage, TopicPublisher
Choice 4
TopicConnectionFactory, TopicConnection, TopicSession, MapMessage, Topic, TopicPublisher
Choice 5
Topic, TopicConnectionFactory, TopicConnection, MapMessage, TopicSession, TopicPublisher
[ March 03, 2003: Message edited by: Timber Lee ]
[ March 04, 2003: Message edited by: Timber Lee ]
 
Ajith Kallambella
Sheriff
Posts: 5782
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For sake of clarity, please post just one question per thread. It will also help keep the discussion focussed on a specific topic. Thanks!
 
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