Testking IBM 000-287
Vendor: IBM
Exam Code: 000-287
Exam Name:test287,enterprise appl.dev.with websphere studio v5.0 (Certified Enterprise Developer Certification )
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QUESTION 1:
A customer’s enterprise application is developed with a strong focus on performance and
scalability on IBM WebSphere Application Server V.5 Several database vendors have to be
supported. The enterprise developer decides to encapsulate calls to entity beans by façade
session beans.
Which design for the entity beans would fit BEST?
A. CMP entity beans providing local interfaces
B. CMP entity bean providing remote interfaces
C. BMP entity beans providing local interfaces
D. BMP entity beans providing remote interface
Answer: A
QUESTION 2:
While testing the create method of a CMP entity bean using the Universal Test Client of
IBM WebSphere Studio Application Developer, the following exception is thrown:
Exception: COM,ibm db2.jdbc.DB2Exception:[IBM][CLI Driver][DB2/NT]
SQL0803N one or more value in the INSERT statement, UPDATE statement, or forign key
update caused by a DELETE statement are not valid because the primary key, unique
constraint or unique index identified by “1″ CONSTRAINS TABLE “library.patron”
FROM HAVING DUPLICATE ROWS FOR THOSE COLUMNS. Sqlstate = 23505
Which of the following should the developer suspect?
A. The Data source in the Server Configuration is wrong.
B. The ejbCreate method has a bug.
C. The create method has a bug
D. The ejbPostCreate method has a bug
Answer: B
QUESTION 3:
To effectively manage its working set, a container may reuse bean instances. What are the
coding best practices that a developer should follow when developing EJBs?
A. Any bean initialization which utilizes EJB environment properties should be performed in the
setSessionContext, setEntityContext, setMessageDrivencontext methods.
B. Implement ejbActivate to restore all non-persistent instance state
C. Serialize the EJB’s state within the ejbPassivate method.
D. Design the bean so that it only contains persistent state.
E. Mark a field as transient if it should not be serialized
Answer: A,B,C
QUESTION 4:
The creation of a stateful session bean involves a sequence of operations performed by the
container to satisfy a client’s create request. Which of the following is the correct ordering
of operations?
1. creating the EJBOblect
2. Creating the bean instance
3. Invoking ejbCreate on bean instance
4. Setting the SessionContext on the bean instance
A. 2,4,3,1
B. 2,1,3,4
C. 1,2,4,3
D. 1,2,3,4
Answer: C
QUESTION 5:
A IBMBankOnline.com customer with multiple accounts can transfer funds from one
account to another. When transferring funds, source and destination accounts cannot be
the same .Assuming the Account object is uniquely identifiable by the customer number
and account type, what task should NOT be performed to complete this requirement?
A. Define a serializable Accountkey class.
B. Declare the two fields that uniquely identify an account as public members of the Accountkey
class.
C. Implement the equals and hashcode methods on the Accountkey class.
D. Override the EJBObject’s isidentical method in the Account bean class.
Answer: D
Testking 000-287
Questions and Answers : 104 Q&As Updated: November 24th , 2008
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