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Oracle 1Z0-858 Exam Syllabus Topics:

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

1. DRAG DROP
Click the Task button.
Place the XML elements in the web application deployment descriptor solution to configure a servlet context event listener named com.example.MyListener.

2. Given an HttpServletRequest request:
22.
String id = request.getParameter("jsessionid");
23.
// insert code here
24.
String name = (String) session.getAttribute("name");
Which three can be placed at line 23 to retrieve an existing HttpSession object? (Choose three.)

A) HttpSession session = request.getSession(false);
B) HttpSession session = request.getSession();
C) HttpSession session = request.getSession(true);
D) HttpSession session = request.getSession(id);
E) HttpSession session = request.getSession("jsessionid");

3. Assume the custom tag my:errorProne always throws a java.lang.RuntimeException with the message "File not found."
An error page has been configured for this JSP page.
Which option prevents the exception thrown by my:errorProne from invoking the error page mechanism, and outputs the message "File not found" in the response?

A) <c:try>
<my:errorProne />
<c:catch var="ex" />
${ex.message}
</c:try>
B) <c:try catch="ex">
<my:errorProne />
</c:try>
${ex.message}
C) <c:catch var="ex">
<my:errorProne />
</c:catch>
${ex.message}
D) <my:errorProne>
<c:catch var="ex">
${ex.message}
</c:catch>
</my:errorProne>
E) <c:try>
<my:errorProne />
</c:try>
<c:catch var="ex" />
${ex.message}

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

5. What is true about Java EE authentication mechanisms?

A) If you want your web application to support the widest possible array of browsers, and you want to perform authentication, the best choice of Java EE authentication mechanisms is DIGEST.
B) If your deployment descriptor correctly declares an authentication type of BASIC, the container automatically requests a user name and password whenever a user starts a new session.
C) To use Java EE FORM authentication, you must declare two HTML files in your deployment descriptor, and you must use a predefined action in the HTML file that handles your user's login.
D) If your deployment descriptor correctly declares an authentication type of CLIENT_CERT, your users must have a certificate from an official source before they can use your application.

Solutions: