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Behaviour of distributed web application.

 
S Subramonyan
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Hi,

The following question is from SCWCD Study Kit.

Which of the following is ^not^ a requirement of a distributed web app?

a. It cannot depend on the notification events generated due to changes in ^ServletContext attribute list^

b. It cannot depend on the notification events generated due to changes in ^session attribute list^

c. It cannot depend on the notification events generated when a ^session is activated or passivated^

d. It cannot depend on the notification events generated when a ^ServletContext is created or destroyed^

e. It cannot depend on the notification events generated when a ^session is created or destroyed^

The answer in the book is C. But I didn't understand the explanation. Can someone please explain why C is correct?

Thanks in Advance.
 
Bryan Basham
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Hi

The main problem with this question is that it uses poor English by
using a negative statement in the stem Which of the following is ^not^ a requirement of a distributed web app? and then uses negative statements in each option, such as c. It cannot depend on the notification events generated when a ^session is activated or passivated^.

Instead reverse these statements. The stem would read Which is a requirement of a distributed web app? and option C would read c. It can depend on the notification events generated when a ^session is activated or passivated^. Which is clearly true.

In Sun's cert exams we are very careful to eliminate (or at least reduce) the amount of negative statements made because it makes the item harder to read and understand. And we always UPPERCASE the words NOT and CANNOT in the text to highlight when a negative statement is being used to tell the candidate to slow down.

Cheers,
Bryan
 
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