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

1. In a JSP-centric shopping cart application, you need to move a client's home address of the Customer object into the shipping address of the Order object. The address data is stored in a value object class called Address with properties for: street address, city, province, country, and postal code. Which two JSP code snippets can be used to accomplish this goal? (Choose two.)

A) <c:set var='order' property='shipAddress'> <jsp:getProperty name='client' property='homeAddress' /> </c:store>
B) <c:set target='${order}' property='shipAddress' value='${client.homeAddress}' />
C) <jsp:setProperty name='${order}' property='shipAddress' value='${client.homeAddress}' />
D) <c:setProperty name='${order}' property='shipAddress'> <jsp:getProperty name='client' property='homeAddress' /> </c:setProperty>
E) <c:set target='${order}' property='shipAddress'> <jsp:getProperty name='client' property='homeAddress' /> </c:set>
F) <c:set var='order' property='shipAddress' value='${client.homeAddress}' />

2. A developer for the company web site has been told that users may turn off cookie support in their browsers. What must the developer do to ensure that these customers can still use the web application?

A) The developer must add the string id=<sessionid> to the end of every URL to ensure that the conversation with the browser can continue.
B) The developer must provide an alternate mechanism for managing sessions and abandon the HttpSession mechanism entirely.
C) The developer must ensure that every URL is properly encoded using the appropriate URL rewriting APIs.
D) The developer can ignore this issue. Web containers are required to support automatic URL rewriting when cookies are not supported.

3. You are building a Front Controller using a JSP page and you need to determine if the user's session has NOT been created yet and perform some special processing for this case. Which scriptlet code snippet will perform this test?

A) <% if ( requestObject.getHttpSession(false) == null ) {
// special processing
} %>
B) <% if ( request.getSession(false) == null ) {
// special processing
} %>
C) <% if ( request.getHttpSession(false) == null ) {
// special processing
} %>
D) <% if ( requestObject.getSession(false) == null ) {
// special processing
} %>

4. Click the Exhibit button.
As a maintenance feature, you have created this servlet to allow you to upload and remove files on your web server. Unfortunately, while testing this servlet, you try to upload a file using an HTTP request and on this servlet, the web container returns a 404 status.
What is wrong with this servlet?

A) The servlet constructor must NOT have any parameters.
B) HTTP does NOT support file upload operations.
C) The doPut and doDelete methods do NOT map to the proper HTTP methods.
D) The servlet needs a service method to dispatch the requests to the helper methods.

5. Which three are true about the HttpServletRequestWrapper class? (Choose three.)

A) The HttpServletRequestWrapper is an example of the Decorator pattern.
B) The HttpServletRequestWrapper can be used to extend the functionality of a servlet request.
C) An HttpServletRequestWrapper may modify the header of a request within an object implementing the javax.servlet.Filter interface.
D) An HttpServletRequestWrapper CANNOT be used on the request passed to the RequestDispatcher.include method.
E) An HttpServletRequestWrapper may be used only by a class implementing the javax.servlet.Filter interface.
F) A subclass of HttpServletRequestWrapper CANNOT modify the behavior of the getReader method.

Solutions: