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SUN 310-083 Exam Syllabus Topics:

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

Question 1

Which interface must a class implement so that instances of the class are notified after any object is added to a session?

A. javax.servlet.http.HttpSessionAttributeListener
B. javax.servlet.http.HttpSessionValueListener
C. javax.servlet.http.HttpSessionBindingListener
D. javax.servlet.http.HttpSessionListener

Question 2

You are designing an n-tier Java EE application. You have already decided that some of your JSPs will need to get data from a Customer entity bean. You are trying to decide whether to use a Customer stub object or a Transfer Object. Which two statements are true? (Choose two.)

A. The stub will increase the logic necessary in the JSPs.
B. Only the Transfer Object will need to use a Business Delegate.
C. In both cases, the JSPs can use EL expressions to get data.
D. The stub will increase network traffic.
E. Using the stub approach allows you to design the application without using a Service
Locator.
F. The Transfer Object will decrease data staleness.

Question 3

You have built your own light-weight templating mechanism. Your servlets, which handle each request, dispatch the request to one of a small set of template JSP pages. Each template JSP controls the layout of the view by inserting the header, body, and footer elements into specific locations within the template page. The URLs for these three elements are stored in request-scoped variables called, headerURL, bodyURL, and footerURL, respectively. These attribute names are never used for other purposes. Which
JSP code snippet should be used in the template JSP to insert the JSP content for the body of the page?

A. <jsp:include page='<%= bodyURL %>' />
B. <jsp:insert file='${bodyURL}' />
C. <jsp:insert page='<%= bodyURL %>' />
D. <jsp:insert page='${bodyURL}' />
E. <jsp:include page='${bodyURL}' />
F. <jsp:include file='${bodyURL}' />

Question 4

Your web application uses a simple architecture in which servlets handle requests and then forward to a JSP using a request dispatcher. You need to pass information calculated in the servlet to the JSP for view generation. This information must NOT be accessible to any other servlet, JSP or session in the webapp. Which two techniques can you use to accomplish this goal? (Choose two.)

A. Add attributes to the session object.
B. Add attributes on the request object.
C. Add parameters to the JSP's URL when generating the request dispatcher.
D. Add parameters to the request object.
E. Use the pageContext object to add request attributes.

Question 5

Which two are valid values for the <transport-guarantee> element inside a <security- constraint> element of a web application deployment descriptor? (Choose two.)

A. CONFIDENTIAL
B. SECURE
C. ENCRYPTED
D. NULL
E. INTEGRAL

Solutions: