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

1. To take advantage of the capabilities of modern browsers that use web standards, such as XHTML and CSS, your web application is being converted from simple JSP pages to JSP Document format. However, one of your JSPs, /scripts/screenFunctions.jsp, generates a JavaScript file. This file is included in several web forms to create screen-specific validation functions and are included in these pages with the following statement:
10.<head>
11.<script src='/scripts/screenFunctions.jsp'
12.language='javascript'
13.type='application/javascript'> </script>
14.</head>
15.<!-- body of the web form -->
Which JSP code snippet declares that this JSP Document is a JavaScript file?

A) No declaration is needed because the web form XHTML page already declares the MIME type of the /scripts/screenFunctions.jsp file in the <script> tag.
B) <jsp:directive.page contentType='application/javascript' />
C) <jsp:document contentType='application/javascript' />
D) <jsp:page contentType='application/javascript' />
E) <%@ page contentType='application/javascript' %>

2. You are creating a new JSP page and you need to execute some code that acts when the page is first executed, but only once. Which three are possible mechanisms for performing this initialization code? (Choose three.)

A) In a JSP declaration, which includes a static initializer block.
B) In the init method.
C) In a JSP declaration, which includes an initializer block.
D) In the jspInit method.
E) In the constructor of the JSP's Java code.

3. Your company has a corporate policy that prohibits storing a customer's credit card number in any corporate database. However, users have complained that they do NOT want to reenter their credit card number for each transaction. Your management has decided to use client-side cookies to record the user's credit card number for 120 days. Furthermore, they also want to protect this information during transit from the web browser to the web container; so the cookie must only be transmitted over HTTPS.
Which code snippet creates the "creditCard" cookie and adds it to the out going response to be stored on the user's web browser?

A) 10. Cookie c = new Cookie("creditCard", usersCard);
11.
c.setSecure(true);
12.
c.setMaxAge(10368000);
13.
response.addCookie(c);
B) 10. Cookie c = new Cookie("creditCard", usersCard);
11.
c.setSecure(true);
12.
c.setAge(10368000);
13.
response.setCookie(c);
C) 10. Cookie c = new Cookie("creditCard", usersCard);
11.
c.setHttps(true);
12.
c.setAge(10368000);
13.
response.addCookie(c);
D) 10. Cookie c = new Cookie("creditCard", usersCard);
11.
c.setHttps(true);
12.
c.setMaxAge(10368000);
13.
response.setCookie(c);
E) 10. Cookie c = new Cookie("creditCard", usersCard);
11.
c.setSecure(true);
12.
c.setAge(10368000);
13.
response.addCookie(c);

4. The Squeaky Bean company has decided to port their web application to a new J2EE 1.4 container. While reviewing the application, a developer realizes that in multiple places within the current application, nearly duplicate code exists that finds enterprise beans. Which pattern should be used to eliminate this duplicate code?

A) Model-View-Controller
B) Service Locator
C) Intercepting Filter
D) Front Controller
E) Business Delegate
F) Transfer Object

5. Given a Filter class definition with this method:
21.
public void doFilter(ServletRequest request,
22.
ServletResponse response,
23.
FilterChain chain)
24.
throws ServletException, IOException {
25.
// insert code here
26.
}
Which should you insert at line 25 to properly invoke the next filter in the chain, or the target servlet if there are no more filters?

A) request.forward(request, response);
B) chain.forward(request, response);
C) chain.doFilter(request, response);
D) request.doFilter(request, response);

Solutions: