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SUN 310-083 Exam Syllabus Topics:

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

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

Question 2

Given an HttpServletRequest request and HttpServletResponse response, which sets a cookie "username" with the value "joe" in a servlet?

A. request.addHeader(new Cookie("username", "joe"))
B. request.addCookie(new Cookie("username", "joe"))
C. response.addCookie("username", "joe")
D. response.addCookie(new Cookie("username", "joe"))
E. request.setCookie("username", "joe")
F. request.addCookie("username", "joe")
G. response.addHeader(new Cookie("username", "joe"))

Question 3

A developer has used this code within a servlet:
62. if(request.isUserInRole("vip")) {
63. // VIP-related logic here
64. }
What else must the developer do to ensure that the intended security goal is achieved?

A. define a security-role named vip in the deployment descriptor
B. define a group within the security realm and call it vip
C. create a user called vip in the security realm
D. declare a security-role-ref for vip in the deployment descriptor

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);
1 6. }
... // more code here
4 7. }
Which code snippet on line 14, will determine the age of the session?

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

Question 5

You need to create a JSP that generates some JavaScript code to populate an array of strings used on the client-side. Which JSP code snippet will create this array?

A. MY_ARRAY = new Array();
< % for ( int i = 0; i < serverArray.length; i++ ) { %>
MY_ARRAY[<%= i %>] = '<%= serverArray[i] %>';
< % } %>
B. MY_ARRAY = new Array();
< % for ( int i = 0; i < serverArray.length; i++ ) {
MY_ARRAY[${i}] = '${serverArray[i]}';
} %>
C. MY_ARRAY = new Array();
< % for ( int i = 0; i < serverArray.length; i++ ) { %>
MY_ARRAY[${i}] = '${serverArray[i]}';
< % } %>
D. MY_ARRAY = new Array();
< % for ( int i = 0; i < serverArray.length; i++ ) {
MY_ARRAY[<%= i %>] = '<%= serverArray[i] %>';
} %>

Solutions: