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SUN 310-083 Exam Syllabus Topics:

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

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

2. Which interface must a session attribute implement if it needs to be notified when a web container persists a session?

A) javax.servlet.http.HttpSessionBindingListener
B) javax.servlet.http.HttpSessionListener
C) javax.servlet.http.HttpSessionAttributeListener
D) javax.servlet.http.HttpSessionActivationListener

3. Which two classes or interfaces provide a getSession method? (Choose two.)

A) javax.servlet.http.HttpServletResponse
B) javax.servlet.http.HttpSessionBindingEvent
C) javax.servlet.http.HttpSessionContext
D) javax.servlet.http.HttpServletRequest
E) javax.servlet.http.HttpSessionAttributeEvent

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>
< td>
< news:lookup />
< news:item info="${headline}" />
< /td>
< /tr>
< /table>
B) <table>
< tr>
< news:lookup>
< td><news:item info="${headline}" /></td>
< /news:lookup>
< /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. You need to store a floating point number, called Tsquare, in the session scope. Which two code snippets allow you to retrieve this value? (Choose two.)

A) float Tsquare = (Float) session.getAttribute("Tsquare");
B) float Tsquare = ((Float) session.getFloatAttribute.("Tsquare")).floatValue;
C) float Tsquare = ((Float) session.getAttribute.("Tsquare")).floatValue();
D) float Tsquare = ((Float) session.getNumericAttribute.("Tsquare")).floatValue;
E) float Tsquare = (float) session.getNumericAttribute("Tsquare");
F) float Tsquare = session.getFloatAttribute("Tsquare");

Solutions: