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SUN 310-083 Exam Syllabus Topics:

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

Question 1

Which two are true about authentication? (Choose two.)

A. J2EE compliant web containers are NOT required to support the HTTPS protocol.
B. When using Basic Authentication the target server is NOT authenticated.
C. Web containers are required to support unauthenticated access to unprotected web resources.
D. Form-based logins should NOT be used when sessions are maintained by cookies or
SSL session information.
E. Form-based logins should NOT be used with HTTPS.

Question 2

Which statement is true if the doStartTag method returns EVAL_BODY_BUFFERED ?

A. It is never legal to return EVAL_BODY_BUFFERED from doStartTag.
B. The setBodyContent method is called once.
C. The tag handler must implement BodyTag.
D. The doAfterBody method is NOT called.

Question 3

You are creating an error page that provides a user-friendly screen whenever a server exception occurs. You want to hide the stack trace, but you do want to provide the exception's error message to the user so the user can provide it to the customer service agent at your company. Which EL code snippet inserts this error message into the error page?

A. Message: <b>${exception.message}</b>
B. Message: <b>${pageContext.exception.errorMessage}</b>
C. Message: <b>${pageContext.exception.message}</b>
D. Message: <b>${request.exception.message}</b>
E. Message: <b>${exception.errorMessage}</b>
F. Message: <b>${request.exception.errorMessage}</b>

Question 4

Given the element from the web application deployment descriptor:
< jsp-property-group>
< url-pattern>/main/page1.jsp</url-pattern>
< scripting-invalid>true</scripting-invalid>
< /jsp-property-group>
and given that /main/page1.jsp contains:
< % int i = 12; %>
< b><%= i %></b>
What is the result?

A. <b></b>
B. <b>12</b>
C. The JSP fails to execute.
D. <% int i = 12 %>
< b><%= i %></b>

Question 5

Your IT department is building a lightweight Front Controller servlet that invokes an application logic object with the interface:
public interface ApplicationController {
public String invoke(HttpServletRequest request)
}
The return value of this method indicates a symbolic name of the next view. From this name, the Front Controller servlet looks up the JSP URL in a configuration table. This URL might be an absolute path or a path relative to the current request. Next, the Front
Controller servlet must send the request to this JSP to generate the view. Assume that the servlet variable request is assigned the current HttpServletRequest object and the variable context is assigned the webapp's ServletContext.
Which code snippet of the Front Controller servlet accomplishes this goal?

A. RequestDispatcher view
= context.getRequestDispatcher(viewURL);
view.forward(request, response);
B. Dispatcher view
= context.getDispatcher(viewURL);
view.forwardRequest(request, response);
C. Dispatcher view
= request.getDispatcher(viewURL);
view.forwardRequest(request, response);
D. RequestDispatcher view
= request.getRequestDispatcher(viewURL);
view.forward(request, response);

Solutions: