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SUN 310-083 Exam Syllabus Topics:

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

Question 1

Which is true about the web container request processing model?

A. A filter defined for a servlet must always forward control to the next resource in the filter chain.
B. If the init method on a filter throws an UnavailableException, then the container will make no further attempt to execute it.
C. Filters associated with a named servlet are applied in the order they appear in the web application deployment descriptor file.
D. The init method on a filter is called the first time a servlet mapped to that filter is invoked.

Question 2

Which basic authentication type is optional for a J2EE 1.4 compliant web container?

A. HTTP Digest Authentication
B. Form Based Authentication
C. HTTP Basic Authentication
D. HTTPS Client Authentication

Question 3

Which three web application deployment descriptor elements allow web components to gain references to resources or EJB components? (Choose three.)

A. resource-ref
B. jdbc-ref
C. ejb-remote-ref
D. ejb-ref
E. servlet-ref
F. javamail-ref
G. resource-env-ref

Question 4

As a convenience feature, your web pages include an Ajax request every five minutes to a special servlet that monitors the age of the user's session. The client-side JavaScript that handles the Ajax callback displays a message on the screen as the session ages. The Ajax call does NOT pass any cookies, but it passes the session ID in a request parameter called sessionID. In addition, assume that your webapp keeps a hashmap of session objects by the ID. Here is a partial implementation of this servlet:
10. public class SessionAgeServlet extends HttpServlet {
11. public void service(HttpServletRequest request, HttpServletResponse) throws
IOException {
1 2. String sessionID = request.getParameter("sessionID");
1 3. HttpSession session = getSession(sessionID);
1 4. long age = // your code here
1 5. response.getWriter().print(age);
16. } ... // more code here
47. }
Which code snippet on line 14, will determine the age of the session?

A. session.getLastAccessed().getTime() - session.getCreationTime().getTime();
B. session.getLastAccessed() - session.getCreationTime();
C. session.getMaxInactiveInterval() - session.getCreationTime();
D. session.getLastAccessedTime() - session.getCreationTime();
E. session.getLastAccessedTime().getTime() - session.getCreationTime().getTime();
F. session.getMaxInactiveInterval();

Question 5

Given this fragment from a Java EE deployment descriptor:
1 24. <welcome-file>beta.html</welcome-file>
1 25. <welcome-file>alpha.html</welcome-file>
And this request from a browser:
http://www.sun.com/SCWCDtestApp/register
Which statement is correct, when the container receives this request?

A. This deployment descriptor is NOT valid.
B. The container first looks in the register directory for beta.html.
C. The container first looks for a servlet mapping in the deployment descriptor.
D. The container first looks in the register directory for alpha.html.

Solutions: