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Question on Mock Exam in FH EJB

 
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In FH EJB mock exam in p371, Q15, I have problem with the answer "C - ejbRemove()". The question mentioned "Which methods are always invoked in *DIRECT* response to a client operation?". I am thinking of some other beans which have cascade-delete relationship with the current bean with the current client. Those beans' ejbRemove() will be invoked by the container if the current bean being removed, And those beans' ejbRemove() are INDIRECTLYresponse to the current client operation to the current beans. So, "C" is not a correct answer. Correct me if I am wrong.
 
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What about the direct use invoked remove call ?
 
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