Pass4Side SUN 310-091 Updated 2008-10-7 DEMO Page 2

Sun Certified Bus. Component Developer Java EE
Updated: 2008-10-7
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6. Which statement about an entity instance lifecycle is correct?
A. A new entity instance is an instance with a fully populated state.
B. A detached entity instance is an instance with no persistent identity.
C. A removed entity instance is NOT associated with a persistence context.
D. A managed entity instance is the instance associated with a persistence context.
Answer: D

7. A developer implements a session bean with a method doStuff which behaves differently depending on the
caller’s security role. Only users in security roles “ADMIN?and “USER?are allowed to call the method. Assume
that there is no security-related metadata in the deployment descriptor. Which two, taken in combination, are
appropriate to accomplish this? (Choose two.)
A. Annotate method doStuff with @PermitAll.
B. Annotate method doStuff with @RolesAllowed({”ADMIN?”USER”})
C. If EJBContext.getCallerPrincipal returns role “ADMIN? implement the behavior for users in role ADMIN.
D. If EJBContext.isCallerInRole(”ADMIN? returns true, implement the behavior defined for users in role
“ADMIN?
Answer: BD

8. A developer wants to create a portable EJB 3.0 application that includes the following class definition for the
Entity Account:
11. @Entity
12. @EntityListeners(com.acme.AlertMonitor.class)
13. public class Account {
14. // more code here
15. @PrePersist
16. protected void validateCreate() {/* more code here */}
17. }
Which statement is correct? pass4side
A. The validateCreate method may NOT throw runtime exceptions.
B. The validateCreate method can invoke the EntityManager.flush operation.
C. Methods of the class com.acme.AlertMonitor annotated with callback annotations must take an Object or
Account instance as the only argument.
D. The above class definition is NOT correct. An entity cannot define a callback method like PrePersist and use
the EntityListeners annotation at the same time.
Answer: C

9. Given:
11. @PersistenceContext EntityManager em;
12. public boolean test(Order o) {
13. boolean b = false;
14. o = em.merge(o);
15 em.remove(o);
16. o = em.merge(o);
17. b = em.contains(o);
18. return b;
19. }
Which statement is correct?
A. The method will return TRUE.
B. The method will return FALSE.
C. The method will throw an exception.
D. The Order instance will be removed from the database.
Answer: C

10. The deployment descriptor for a stateless session bean that uses the isCallerInRole method reads as follows:
3.
4. manager
5. humanresources
6.
16.
17.
18. Is allowed to view and update all employee records.
19.
20. humanresources
21.
Which two roles are responsible for creating this deployment descriptor? (Choose two.)
A. Deployer
B. Bean Provider
C. System Administrator
D. Application Assembler
Answer: BD

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