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SUN 310-083 Exam Syllabus Topics:

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

1. Which implicit object is used in a JSP page to retrieve values associated with <context- param> entries in the deployment descriptor?

A) application
B) session
C) request
D) config

2. Which EL expression evaluates to the request URI?

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

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

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

5. You need to create a servlet filter that stores all request headers to a database for all requests to the web application's home page "/index.jsp". Which HttpServletRequest method allows you to retrieve all of the request headers?

A) java.util.Iterator getHeaderNames()
B) java.util.Enumeration getHeaderNames()
C) java.util.Iterator getRequestHeaders()
D) String[] getRequestHeaders()
E) java.util.Enumeration getRequestHeaders()
F) String[] getHeaderNames()

Solutions: