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SUN 310-083 Exam Syllabus Topics:

SUN Sun Certified Web Component Developer for J2EE 5 Sample Questions:

Question 1

DRAG DROP
Click the Task button.
A servlet context listener loads a list of com.example.Product objects from a database and stores that list into the catalog attribute of the ServletContext object.
Place code snippets to construct a jsp:useBean standard action to access this catalog.

Question 2

A developer wants a web application to be notified when the application is about to be shut down. Which two actions are necessary to accomplish this goal? (Choose two.)

A. include a class implementing ContextDestroyedListener as part of the web application deployment
B. include a listener directive in a JSP page
C. configure a listener in the TLD file using the <listener> element
D. include a class implementing HttpSessionAttributeListener as part of the web application deployment
E. include a class implementing ServletContextListener as part of the web application deployment
F. configure a listener in the application deployment descriptor, using the <listener> element
G. include a <servlet-destroy> element in the web application deployment descriptor

Question 3

Within the web application deployment descriptor, which defines a valid JNDI environment entry?

A. <env-entry>
< env-entry-type>java.lang.Boolean</env-entry-type>
< env-entry-value>true</env-entry-value>
< /env-entry>
B. <env-entry>
< env-entry-name>param/MyExampleString</env-entry-name>
< env-entry-type>java.lang.String</env-entry-type>
< env-entry-value>This is an Example</env-entry-value>
< /env-entry>
C. <env-entry>
< env-entry-name>param/MyExampleString</env-entry-name>
< env-entry-type>int</env-entry-type>
< env-entry-value>10</env-entry-value>
< /env-entry>
D. <env-entry>
< env-entry-name>param/MyExampleString</env-entry-name>
< env-entry-value>This is an Example</env-entry-value>
< /env-entry>

Question 4

Given:
1 . <% int[] nums = {42,420,4200};
2 . request.setAttribute("foo", nums); %>
3 . ${5 + 3 lt 6}
4 . ${requestScope['foo'][0] ne 10 div 0}
5 . ${10 div 0}
What is the result?

A. false true
B. An exception is thrown.
C. true true
D. false true Infinity
E. false true 0
F. Compilation or translation fails.
G. true true Infinity

Question 5

A developer is designing a multi-tier web application and discovers a need to hide the details of establishing and maintaining remote communications from the client. In addition, because the business and resource tiers are distributed, the application needs to minimize the inter-tier network traffic related to servicing client requests. Which design patterns, working together, address these issues?

A. Model-View-Controller and Intercepting Filter
B. Front Controller and Service Locator
C. Front Controller and Transfer Object
D. Business Delegate and Transfer Object
E. Business Delegate and Intercepting Filter

Solutions: