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

1. Which activity supports the data integrity requirements of an application?

A) using HTTPS as a protocol
B) using forms-based authentication
C) using HTTP Basic authentication
D) using an LDAP security realm

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

3. Your web site has many user-customizable features, for example font and color preferences on web pages. Your IT department has already built a subsystem for user preferences using Java SE's lang.util.prefs package APIs and you have been ordered to reuse this subsystem in your web application. You need to create an event listener that stores the user's Preference object when an HTTP session is created. Also, note that user identification information is stored in an HTTP cookie.
Which partial listener class can accomplish this goal?

A) public class UserPrefLoader implements HttpSessionListener {
public void sessionCreated(HttpSessionEvent se) {
MyPrefsFactory myFactory = (MyPrefsFactory)
se.getServletContext().getAttribute("myPrefsFactory");
User user = getUserFromCookie(se);
myFactory.setThreadLocalUser(user);
Preferences userPrefs = myFactory.userRoot();
se.getSession().setAttribute("prefs", userPrefs);
}
// more code here
}
B) public class UserPrefLoader implements SessionListener {
public void sessionInitialized(SessionEvent se) {
MyPrefsFactory myFactory = (MyPrefsFactory)
se.getServletContext().getAttribute("myPrefsFactory");
User user = getUserFromCookie(se);
myFactory.setThreadLocalUser(user);
Preferences userPrefs = myFactory.userRoot();
se.getSession().addAttribute("prefs", userPrefs);
}
// more code here
}
C) public class UserPrefLoader implements SessionListener {
public void sessionCreated(SessionEvent se) {
MyPrefsFactory myFactory = (MyPrefsFactory)
se.getContext().getAttribute("myPrefsFactory");
User user = getUserFromCookie(se);
myFactory.setThreadLocalUser(user);
Preferences userPrefs = myFactory.userRoot();
se.getSession().addAttribute("prefs", userPrefs);
}
// more code here }
D) public class UserPrefLoader implements HttpSessionListener {
public void sessionInitialized(HttpSessionEvent se) {
MyPrefsFactory myFactory = (MyPrefsFactory)
se.getServletContext().getAttribute("myPrefsFactory");
User user = getUserFromCookie(se);
myFactory.setThreadLocalUser(user);
Preferences userPrefs = myFactory.userRoot();
se.getHttpSession().setAttribute("prefs", userPrefs);
}
// more code here
}

4. Which retrieves all cookies sent in a given HttpServletRequest request?

A) request.getSession().getCookies()
B) request.getCookies()
C) request.getAttributes()
D) request.getSession().getAttributes()

5. Click the Exhibit button.
A session-scoped attribute, product, is stored by a servlet. That servlet then forwards to a JSP page. This attribute holds an instance of the com.example.Product class with a name property of "The Matrix" and price property of 39.95.
Given the JSP page code snippet:
1.<jsp:useBean id='product' class='com.example.Product'>
2.<jsp:setProperty name='product' property='price' value='49.95'/>
3.</jsp:useBean>
4.<%= product.getName() %> costs <%= product.getPrice() %> What is the response output of this JSP page code snippet?

A) The Matrix costs 49.95
B) Default costs 39.95
C) Default costs 49.95
D) The Matrix costs 0.0
E) Default costs 0.0
F) The Matrix costs 39.95

Solutions: