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HFSJ mock exam question 56

rich dubois
Greenhorn

Joined: Feb 16, 2010
Posts: 20
Hi,

The question is

56. Which of the following is the least likely to make or receive network calls?

A jdni server
B transfer object
c service locator
d front controller
e. intercepting filter

The answer given was B. Why wouldn't answer e, intercepting filters, be correct?

Thanks
Frits Walraven
Creator of Enthuware JWS+ V6
Bartender

Joined: Apr 07, 2010
Posts: 1731
    
  25

Hi Rich,

I have never seen the question, but I must say that it is tricky one.
All I can think of is that the Intercepting Filter receives the Request from a client over the network.

Regards,
Frits
Rohan kanade
Ranch Hand

Joined: Oct 22, 2009
Posts: 106
this question is in terms of the Remote Object which is accessed by the business delegate each time in the view (jsp using el) we access a property of that remote object.

thus what the transfer object does is, it is a local copy of the remote object, and thus the network calls are minimized.


SCJP 1.6 ,SCWCD 5
Frits Walraven
Creator of Enthuware JWS+ V6
Bartender

Joined: Apr 07, 2010
Posts: 1731
    
  25

Hi Rohan,

I think we all agree that the Transfer Object is one that doesn't make or receive network calls. The question of Rich was: why is the Intercepting Filter not a good answer.

Regards,
Frits
rich dubois
Greenhorn

Joined: Feb 16, 2010
Posts: 20
Thanks Fritz and Rohan!!

Both of your answers were helpful and I see the validity in the answer.

PS Fritz thanks to you and all of the others who suggested the Enthuware mock exams, they are very much worth the $29, they are filling a lot of the cracks of my understanding and reinforcing the existing knowledge
 
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