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Question ID 4639

A developer chooses to avoid using singieThreadModel but wants to ensure that data If; updated in a thread safe manner.
Which two can support this design goal? (Choose two)
 

Option A

A.    Store the data in a local variable.
 

Option B

B.    Store the data in an instance variable.
 

Option C

C.    Store the data in the Httpsession object.
 

Option D

D.    Store the data in the sarvletContext object.
 

Option E

E.    Store the data in the ServletRequest object.
 

Correct Answer A,E
Explanation


Question ID 4640

You have a use in your web application that adds several session-scoped attributes. At the end of the use case, one of these objects, the manage attribute, is removed and then it needs to decide which of the other session-scoped attributes to remove.
How can this goal be accomplished?

 

Option A

A.    The object of the manager attribute should implement the HttpSessionBindingListener and it should call the removeAttribute method on the appropriate session attributes.
 

Option B

B.    The object of the manager attribute should implement the HttpSessionListenar and it should call the removeAttribute method on the appropriate session attributes.
 

Option C

C.    The object of the manager attribute should implement the HttpSessionBindingListener rind it should call the deleteAttribute method on the appropriate session attributes.
 

Option D

D.    The object of the manager attribute should implement the HttpsessionListener and it should call the deleteAttribute method on the appropriate session attributes.
 

Correct Answer A
Explanation

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