Pass4Side SUN 310-091 Updated 2008-10-7 Page - 3
Category: Technical
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Sun Certified Bus. Component Developer Java EE
Updated: 2008-10-7
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11. Given two entities with a many-to-many bidirectional association between them:
11. @Entity public class Employee {
12. Collection projects;
13. // more code here
14. }
and
11. @Entity public class Project{
12. Set emps;
13. // more code here
14. }
What set of annotations correctly defines the association?
A. @ManyToMany on the projects field,
@ManyToMany(mappedBy=”projects? on the emps field
B. @ManyToMany(mappedBy=”emps? on the projects field,
@ManyToMany on the emps field
C. @ManyToMany(targetEntity=Project.class) on the projects field,
@ManyToMany(mappedBy=”projects? on the emps field
D. @ManyToMany(targetEntity=Project.class) on the projects field,
@ManyToMany on the emps field
Answer: C
12. Given code snippets from two files:
7. public class Dog {
8. public void onMessage(Message m) { System.out.print(? ?; }
9. }
and
10. @MessageDriven
11. class MessageDog extends Dog implements MessageDrivenBean {
12. MessageDog(Message m) { System.out.print(? ?; }
13. }
Which four code changes, when used together, create a valid JMS message-driven bean? (Choose four.)
A. Make class MessageDog public.
B. Make the MessageDog constructor no-arg.
C. Make the MessageDog constructor public.
D. Move the onMessage method to class MessageDog.
E. Change MessageDog so that it is NOT a subclass of Dog.
F. Make class MessageDog implement MessageListener instead of MessageDrivenBean.
Answer: ABCF
13. Which statement about entity manager is true?
A. A container-managed entity manager must be a JTA entity manager.
Pass4Side SUN 310-091
Pass4Side Help you pass any IT Exams! Page 7 of 9
B. An entity manager injected into session beans can use either JTA or resource-local transaction control.
C. An entity manager created by calling the EntityManagerFactory.createEntityManager method always uses JTA
transaction control.
D. An entity manager obtained through resource injection in a stateful session bean can use a resource-local
EntityTransaction for transaction control.
Answer: A
14. Which two options can be used to predefine Java Persistence queries for easy use? (Choose two.)
A. @NamedQuery annotation
B. @NamedNativeQuery annotation
C. using the named-query element in the XML descriptor
D. using the named-native-query element in the XML descriptor
Answer: AC
15. Given a set of CMT bean methods with the following transaction attributes:
Method M1=SUPPORTS
Method M2=REQUIRED
Method M3=NOT_SUPPORTED
Method M4=REQUIRES_NEW
And the following method invocation sequence:
Method M1 invokes Method M2
Method M2 invokes Method M3
Method M1 invokes Method M4
If Method M1 is invoked by a method that does NOT have a transaction context, which describes a possible
scenario?
A. Method M1: no transaction
Method M2: new transaction
Method M3: no transaction
Method M4: new transaction
B. Method M1: no transaction
Method M2: Container throws EJBTransactionRequiredException
C. Method M1: new transaction
Method M2: runs in same transaction as M1
Method M3: Container throws TransactionNotSupportedException
D. Method M1: no transaction
Method M2: new transaction
Method M3: Container throws TransactionNotSupportedException
Answer: A
Updated: 2008-10-7
More Infomation Visit: http://www.pass4side.com
11. Given two entities with a many-to-many bidirectional association between them:
11. @Entity public class Employee {
12. Collection projects;
13. // more code here
14. }
and
11. @Entity public class Project{
12. Set
13. // more code here
14. }
What set of annotations correctly defines the association?
A. @ManyToMany on the projects field,
@ManyToMany(mappedBy=”projects? on the emps field
B. @ManyToMany(mappedBy=”emps? on the projects field,
@ManyToMany on the emps field
C. @ManyToMany(targetEntity=Project.class) on the projects field,
@ManyToMany(mappedBy=”projects? on the emps field
D. @ManyToMany(targetEntity=Project.class) on the projects field,
@ManyToMany on the emps field
Answer: C
12. Given code snippets from two files:
7. public class Dog {
8. public void onMessage(Message m) { System.out.print(? ?; }
9. }
and
10. @MessageDriven
11. class MessageDog extends Dog implements MessageDrivenBean {
12. MessageDog(Message m) { System.out.print(? ?; }
13. }
Which four code changes, when used together, create a valid JMS message-driven bean? (Choose four.)
A. Make class MessageDog public.
B. Make the MessageDog constructor no-arg.
C. Make the MessageDog constructor public.
D. Move the onMessage method to class MessageDog.
E. Change MessageDog so that it is NOT a subclass of Dog.
F. Make class MessageDog implement MessageListener instead of MessageDrivenBean.
Answer: ABCF
13. Which statement about entity manager is true?
A. A container-managed entity manager must be a JTA entity manager.
Pass4Side SUN 310-091
Pass4Side Help you pass any IT Exams! Page 7 of 9
B. An entity manager injected into session beans can use either JTA or resource-local transaction control.
C. An entity manager created by calling the EntityManagerFactory.createEntityManager method always uses JTA
transaction control.
D. An entity manager obtained through resource injection in a stateful session bean can use a resource-local
EntityTransaction for transaction control.
Answer: A
14. Which two options can be used to predefine Java Persistence queries for easy use? (Choose two.)
A. @NamedQuery annotation
B. @NamedNativeQuery annotation
C. using the named-query element in the XML descriptor
D. using the named-native-query element in the XML descriptor
Answer: AC
15. Given a set of CMT bean methods with the following transaction attributes:
Method M1=SUPPORTS
Method M2=REQUIRED
Method M3=NOT_SUPPORTED
Method M4=REQUIRES_NEW
And the following method invocation sequence:
Method M1 invokes Method M2
Method M2 invokes Method M3
Method M1 invokes Method M4
If Method M1 is invoked by a method that does NOT have a transaction context, which describes a possible
scenario?
A. Method M1: no transaction
Method M2: new transaction
Method M3: no transaction
Method M4: new transaction
B. Method M1: no transaction
Method M2: Container throws EJBTransactionRequiredException
C. Method M1: new transaction
Method M2: runs in same transaction as M1
Method M3: Container throws TransactionNotSupportedException
D. Method M1: no transaction
Method M2: new transaction
Method M3: Container throws TransactionNotSupportedException
Answer: A
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