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Oracle Java Enterprise Edition 5 Web Component Developer Certified Professional Sample Questions:

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

2. You are creating a servlet that generates stock market graphs. You want to provide the web browser with precise information about the amount of data being sent in the response stream. Which two HttpServletResponse methods will you use to provide this information? (Choose two.)

A) response.setContentLength(numberOfBytes);
B) response.setIntHeader("Content-Length", numberOfBytes);
C) response.setHeader("Content-Length", numberOfBytes);
D) response.setHeader("Length", numberOfBytes);
E) response.setLength(numberOfBytes);
F) response.setIntHeader("Length", numberOfBytes);

3. Given:
3.public class MyTagHandler extends TagSupport {
4.public int doStartTag() {
5.// insert code here
6.// return an int
7.}
8.// more code here
...
18. }
There is a single attribute foo in the session scope.
Which three code fragments, inserted independently at line 5, return the value of the attribute? (Choose three.)

A) Object o = pageContext.getAttribute("foo", PageContext.SESSION_SCOPE);
B) Object o = pageContext.getAttribute("foo");
C) HttpServletRequest r = pageContext.getRequest(); Object o = r.getAttribute("foo");
D) Object o = pageContext.findAttribute("foo");
E) HttpSession s = pageContext.getSession(); Object o = s.getAttribute("foo");

4. Which three are true about TLD files? (Choose three.)

A) The web container can automatically extend the tag library map described in a web.xml file by including entries extracted from the web application's TLD files.
B) When deployed inside a JAR file, TLD files must be in the META-INF directory, or a subdirectory of it.
C) The web container recognizes TLD files placed in any subdirectory of WEB-INF.
D) The web container can generate an implicit TLD file for a tag library comprised of both simple tag handlers and tag files.
E) A tag handler's attribute must be included in the TLD file only if the attribute can accept request-time expressions.

5. Given: http://com.example/myServlet.jsp?num=one&num=two&num=three Which two produce the output "one, two and three"? (Choose two.)

A) ${parameterValues["num"]["0"]}, ${parameterValues["num"]["1"]} and ${parameterValues["num"]["2"]}
B) ${paramValues["num"][0]}, ${paramValues["num"][1]} and ${paramValues["num"][2]}
C) ${param.num[0],[1] and [2]}
D) ${paramValues[0],[1] and [2]}
E) ${paramValues.num[0]}, ${paramValues.num[1]} and ${paramValues.num[2]}
F) ${parameterValues.num[0]}, ${parameterValues.num[1]} and ${parameterValues.num[2]}
G) ${param.num[0]}, ${param.num[1]} and ${param.num[2]}

Solutions: