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SUN 310-083 Exam Syllabus Topics:

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

1. Given:
1 1. <servlet>
1 2. <servlet-name>catalog</servlet-name>
1 3. <jsp-file>/catalogTemplate.jsp</jsp-file>
1 4. <load-on-startup>10</load-on-startup>
1 5. </servlet>
Which two are true? (Choose two.)

A) Line 13 is not valid for a servlet declaration.
B) One instance of the servlet will be loaded at startup.
C) Line 14 is not valid for a servlet declaration.
D) The servlet will be referenced by the name catalog in mappings.
E) Ten instances of the servlet will be loaded at startup.

2. Which two are characteristics of the Transfer Object design pattern? (Choose two.)

A) It increases the complexity of the design due to remote synchronization and version control issues.
B) It reduces network traffic by collapsing multiple remote requests into one.
C) It increases the complexity of the remote interface by removing coarse-grained methods.
D) It increases network performance introducing multiple fine-grained remote requests which return very small amounts of data.

3. Given a Filter class definition with this method:
2 1. public void doFilter(ServletRequest request,
2 2. ServletResponse response,
2 3. FilterChain chain)
2 4. throws ServletException, IOException {
2 5. // insert code here
26. }
Which should you insert at line 25 to properly invoke the next filter in the chain, or the target servlet if there are no more filters?

A) chain.doFilter(request, response);
B) request.doFilter(request, response);
C) request.forward(request, response);
D) chain.forward(request, response);

4. Assume that a news tag library contains the tags lookup and item:
lookup Retrieves the latest news headlines and executes the tag body once for each headline. Exposes a NESTED page-scoped attribute called headline of type com.example.Headline containing details for that headline.
item Outputs the HTML for a single news headline. Accepts an attribute info of type com.example.Headline containing details for the headline to be rendered.Which snippet of JSP code returns the latest news headlines in an HTML table, one per row?

A) <table>
< tr>
< news:lookup>
< td><news:item info="${headline}" /></td>
< /news:lookup>
< /tr>
< /table>
B) <table>
< tr>
< td>
< news:lookup />
< news:item info="${headline}" />
< /td>
< /tr>
< /table>
C) <table>
< news:lookup>
< tr>
< td><news:item info="${headline}" /></td>
< /tr>
< /news:lookup>
< /table>
D) <news:lookup />
< table>
< tr>
< td><news:item info="${headline}" /></td>
< /tr>
< /table>

5. Given:
String value = getServletContext().getInitParameter("foo");
in an HttpServlet and a web application deployment descriptor that contains:
< context-param>
< param-name>foo</param-name>
< param-value>frodo</param-value>
< /context-param>
Which two are true? (Choose two.)

A) The foo initialization parameter is NOT a servlet initialization parameter.
B) The foo initialization parameter can also be retrieved using
getServletConfig().getInitParameter("foo").
C) The foo initialization parameter CANNOT be set programmatically.
D) Compilation fails because getInitParameter returns type Object.
E) The foo parameter must be defined within the <servlet> element of the deployment descriptor.
F) Compilation fails because ServletContext does NOT have a getInitParameter method.

Solutions: