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Question ID 4564

If an application uses an extended persistence context, which of the following is true?
 

Option A

A.    The persistence context exists until all transactions invoked by the EntityManager complete.
 

Option B

B.    The persistence context exists until all transactions invoked by the EntityManagar complete and the EntityManager.clear () method is invoked.
 

Option C

C.    The persistence context exists until the EntityManager instance is closed.
 

Option D

D.    The persistence context exists until the EntityManagerFactory instance is closed.
 

Correct Answer C
Explanation


Question ID 4565

An application uses an application-managed entity manager. Which of the following is NOT true?
 

Option A

A.    The application may specify whether the scope of the persistence context is extended.
 

Option B

B.    The application must use EntityManagerFactory instances to create entity managers.
 

Option C

C.    Entity manager instances must be explicitly closed.
 

Option D

D.    The application may need to call EntityManager. joinTransactionif a JTA aware entity manager is used.
 

Correct Answer D
Explanation

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