Exam Number/Code:000-484
Exam Name: enterprise connectivity with j2ee v1.3

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Question: 1
A developer successfully creates and tests a stateful Session Bean. Following deployment,
intermittent NullPointerExceptions begin to occur, particularly when the server is heavily loaded.
Which bean method is MOST likely to be related to the problem?
A. setSessionContext
B. ejbCreate
C. ejbPassivate
D. beforeCompletion
E. ejbLoad
Answer: C
Question: 2
A developer implements a BMP entity bean which uses a relational database.
Identify the lifecycle methods that involve database access.
A. ejbCreate()
B. ejbPostCreate()
C. ejbActivate()
D. ejbPassivate()
E. ejbRemove()
Answer: A, E
Question: 3
An EJB that is deployed with container-manager transaction contains a business method. This
method performs an operation that potentially throws a NullPointerException. If this occurs, the
bean cannot recover and should rollback its transaction. What is the BEST way to implement this
scenario?
A. Catch the NullPointerException exception, then throw an application exception. The container
will rollback the transaction automatically.
B. Catch the NullPointerException exception, then throw an application exception that wraps the
original exception. The container will rollback the transaction automatically.
C. Catch the NullPointerException exception, call setRollbackOnly(), thus forcing a rollback of the
transaction, then throw an application exception.
D. Do nothing and let the NullPointerException propagate to the container. The container will
rollback the transaction automatically.
Answer: C
Question: 4
Which of the following are TRUE regarding ejbPostCreate() methods?
A. Only entity beans have ejbPostCreate() methods.
B. ejbPostCreate() method signatures must match ejbCreate() method signatures.
C. ejbPostCreate() methods are optional.
D. Corresponding postCreate() methods exist in the bean’s home interface.
E. ejbPostCreate() is called by the EJB container following creation of the bean’s EJBObject.
Answer: A, B, E
Question: 5
Which of the following represents the order in which a stateful session bean’s methods might get
executed, according to its life cycle?
A. ejbPassivate(), setSessionContext(), ejbActivate(), ejbRemove().
B. ejbActivate(), setSessionContext(), ejbPassivate(), ejbRemove().
C. setSessionContext(), ejbActivate(), ejbPassivate(), ejbRemove().
D. setSessionContext(), ejbPassivate(), ejbActivate(), ejbRemove().
Answer: D
Question: 6
An EJB is required to hold a customer’s address information. This information must be made
available to future customer transactions. The bean must be deployable to any EJB server. The
exact server runtime configuration is unknown. Which bean type BEST suits these requirements?
A. A stateless session bean.
B. A stateful session bean.
C. A BMP entity bean.
D. A CMP entity bean.
E. A message-driven bean.
Answer: D
Question: 7
The remote home interface for an EJB only contains a single method. The signature of this
method is create(int xyz). What type of bean MUST it be?
A. stateless session bean
B. stateful session bean
C. BMP entity bean
D. CMP entity bean
E. message-driven bean
Answer: B
Question: 8
Two entity beans share a bidirectional, container-managed relationship (CMR). What statements
are TRUE regarding these beans? .
A. None of the entity beans need to have a local interface.
B. Only one of the two entity beans MUST have a local interface; the other bean can have either
a remote or a local interface.
C. Both entity beans MUST have local interfaces.
D. None of the entity beans have to be container-managed-persistence (CMP) beans.
E. Only one of the two entity beans MUST be a container-managed-persistence (CMP) bean. The
other bean can be either a container-managed (CMP) or bean-managed (BMP) bean.
F. Both entity beans must be container-managed persistence (CMP) beans.
Answer: C, F
Question: 9
Which of the following are TRUE about primary keys and entity beans?
A. All entity beans must have a findByPrimaryKey(primaryKey) method implemented in the bean
class.
B. All entity beans must have a findByPrimaryKey(primaryKey) method declared in each home
interface.
C. All primary key classes must be legal value types in RMI-IIOP.
D. A custom primary key class must be defined.
E. Entity beans must be located using the findByPrimaryKey(primaryKey) method.
Answer: B, C
Question: 10
An EJB is required to model the catalog object of a “J2EE Book Store”. The catalog object
represents different categories and products and provides browsing and searching services to its
clients. Also, it only reads catalog data from the underlying database. Which of the following
designs BEST suits the requirement?
A. stateless session bean with Data Access Object (DAO)
B. stateful session bean with Data Access Object (DAO)
C. BMP entity bean with DAO Data Access Object (DAO)
D. CMP entity bean
Answer: A
Question: 11
An EJB is required to process order fulfillment. No immediate reply is required by the client, but a
confirmation email is expected instead when the order is fulfilled. Which bean type BEST suits the
requirements?
A. stateless session bean
B. stateful session bean
C. BMP entity bean
D. CMP entity bean
E. message-driven bean
Answer: E
Question: 12
A developer sets up a topic with a message-driven bean. During testing, the developer notes that
messages are lost when a client disconnects. What possible changes will ensure that all
unexpired messages are delivered when a client has been disconnected?
A. Use a queue instead of a topic.
B. Code the onMessage() method in the client code so that no acknowledgement is sent until
after the messages have completed processing.
C. Specify Durable in the deployment descriptor
for the topic.
D. Design the client code to implement the javax.jms.MessageListener interface.
Answer: A, C
Question: 13
An EJB client initializes and begins a transaction. It then invokes a bean business method. The
bean uses container-managed transaction demarcation. The business method executes within
the scope of the client supplied transaction. Which of the following are possible values for the
bean method’s transaction attribute?
A. NotSupported
B. Supports
C. Required
D. RequiresNew
E. Mandatory
Answer: B, C, E
Question: 14
Which of the following are TRUE regarding CMP entity beans that conform to the EJB 2.0
specification?
A. Container managed fields must be declared as public.
B. The primary key definition is stored in the deployment descriptor and can be determined at
deployment time.
C. The EJB QL statements for any finder methods are stored in the deployment descriptor.
D. Moving the CMPs database to a different server (machine) requires recompilation of the bean.
Answer: B, C
Question: 15
A stateful Session bean is deployed using the container-managed transaction demarcation
attribute RequiresNew. Which of the following are TRUE regarding exceptions in its business
methods?
A. Transaction rollback occurs automatically when an application exception is thrown.
B. Transaction rollback occurs automatically when a system exception is thrown.
C. Transaction rollback restores bean state.
D. If EJBException is thrown by a business method, it must be declared in its throws clause.
E. Application exceptions should normally be passed directly through to the caller.
Answer: B, E
Question: 16
A common banner greeting the current user is required by several JSPs. The logic for building
this banner is already available in a page named “banner.jsp”. Many future enhancements, such
as adding the user’s account number, are planned for the banner. Which of the following MUST
be used in JSPs that use the banner, such that these JSPs need not be updated every time the
banner is updated?
A. <%@ include file="banner.jsp"%>
B.
C.
D.
E.
Answer: B

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