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SUN 310-083 Exam Syllabus Topics:

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

Question 1

Which statement is true about web container session management?

A. Access to session-scoped attributes is guaranteed to be thread-safe by the web container.
B. To activate URL rewriting, the developer must use the
HttpServletResponse.setURLRewriting method.
C. The JSESSIONID cookie is stored permanently on the client so that a user may return to the web application and the web container will rejoin that session.
D. If the web application uses HTTPS, then the web container may use the data on the
HTTPS request stream to identify the client.

Question 2

Click the Exhibit button.
Assume the tag library in the exhibit is placed in a web application in the path /WEB-
INF/tld/example.tld.
1.
2. <ex:hello />
Which JSP code, inserted at line 1, completes the JSP code to invoke the hello tag?

A. <%@ taglib prefix="ex"
uri="http://localhost:8080/tld/example.tld" %>
B. <%@ taglib prefix="ex" uri="/WEB-INF/tld" %>
C. <%@ taglib prefix="ex"
uri="http://example.com/tld/example" %>
D. <%@ taglib uri="/WEB-INF/tld/example.tld" %>

Question 3

Click the Exhibit button.
Assuming the tag library in the exhibit is imported with the prefix stock, which custom tag invocation outputs the contents of the variable exposed by the quote tag?

A. <stock:quote symbol="SUNW" />
$ {var}
B. <stock:quote symbol="SUNW" var="quote" />
$ {quote}
C. <stock:quote symbol="SUNW">
${var}
< /stock:quote>
D. <stock:quote symbol="SUNW" var="quote">
< %= quote %>
< /stock:quote>
E. ${var}
< stock:quote symbol="SUNW" />

Question 4

Which EL expression evaluates to the request URI?

A. ${requestScope.request.requestURI}
B. ${pageContext.request.requestURI}
C. ${requestURI}
D. ${request.getURI}
E. ${request.URI}
F. ${request.requestURI}
G. ${requestScope.requestURI}

Question 5

You have been contracted to create a web site for a free dating service. One feature is the ability for one client to send a message to another client, which is displayed in the latter client's private page. Your contract explicitly states that security is a high priority.
Therefore, you need to prevent cross-site hacking in which one user inserts JavaScript code that is then rendered and invoked when another user views that content. Which two
JSTL code snippets will prevent cross-site hacking in the scenario above? (Choose two.)

A. <c:out value='${message}' />
B. <c:out value='${message}' escapeXml='true' />
C. <c:out eliminateXml='true'>${message}</c:out>
D. <c:out value='${message}' eliminateXml='true' />
E. <c:out>${message}</c:out>

Solutions: