SUN Sun Certified Web Component Developer for J2EE 5 : 310-083

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

1. Given:
3 . class MyServlet extends HttpServlet {
4 . public void doPut(HttpServletRequest req,
HttpServletResponse resp)
throws ServletException, IOException {
5. // servlet code here
...
2 6. }
2 7. }
If the DD contains a single security constraint associated with MyServlet and its only <http- method> tags and <auth-constraint> tags are:
< http-method>GET</http-method>
< http-method>PUT</http-method>
< auth-constraint>Admin</auth-constraint>
Which four requests would be allowed by the container? (Choose four.)

A) A user whose role is Admin can perform a POST.
B) A user whose role is Member can perform a GET.
C) A user whose role is Member can perform a PUT.
D) A user whose role is Member can perform a POST.
E) A user whose role is Admin can perform a PUT.
F) A user whose role is Admin can perform a GET.

2. Given this fragment from a Java EE deployment descriptor:
3 41. <error-page>
3 42. <exception-type>java.lang.Throwable</exception-type>
3 43. <location>/mainError.jsp</location>
3 44. </error-page>
3 45. <error-page>
3 46. <exception-type>java.lang.ClassCastException</exception-type>
3 47. <location>/castError.jsp</location>
3 48. </error-page>
If the web application associated with the fragment above throws a ClassCastException.
Which statement is true?

A) Neither mainError.jsp nor castError.jsp is invoked.
B) The deployment descriptor is invalid.
C) The container invokes mainError.jsp.
D) The container invokes castError.jsp.

3. Squeaky Beans Inc. hired an outside consultant to develop their web application. To finish the job quickly, the consultant created several dozen JSP pages that directly communicate with the database. The Squeaky business team has since purchased a set of business objects to model their system, and the Squeaky developer charged with maintaining the web application must now refactor all the JSPs to work with the new system. Which pattern can the developer use to solve this problem?

A) Business Delegate
B) Transfer Object
C) Service Locator
D) Intercepting Filter

4. 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 re- enter 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);
1 1. c.setSecure(true);
1 2. c.setAge(10368000);
1 3. response.addCookie(c);
B) 10. Cookie c = new Cookie("creditCard", usersCard);
1 1. c.setHttps(true);
1 2. c.setMaxAge(10368000);
1 3. response.setCookie(c);
C) 10. Cookie c = new Cookie("creditCard", usersCard);
1 1. c.setSecure(true);
1 2. c.setMaxAge(10368000);
1 3. response.addCookie(c);
D) 10. Cookie c = new Cookie("creditCard", usersCard);
1 1. c.setHttps(true);
1 2. c.setAge(10368000);
1 3. response.addCookie(c);
E) 10. Cookie c = new Cookie("creditCard", usersCard);
1 1. c.setSecure(true);
1 2. c.setAge(10368000);
1 3. response.setCookie(c);

5. You are creating a content management system (CMS) with a web application front-end.
The JSP that displays a given document in the CMS has the following general structure:
1 . <%-- tag declaration --%>
2 . <t:document>
...
11. <t:paragraph>... <t:citation docID='xyz' /> ...</t:paragraph>
...
99. </t:document>
The citation tag must store information in the document tag for the document tag to generate a reference section at the end of the generated web page.
The document tag handler follows the Classic tag model and the citation tag handler follows the Simple tag model. Furthermore, the citation tag could also be embedded in other custom tags that could have either the Classic or Simple tag handler model.
Which tag handler method allows the citation tag to access the document tag?

A) public void doStartTag() {
JspTag docTag = findAncestorWithClass(this, DocumentTag.class);
((DocumentTag)docTag).addCitation(this.docID);
}
B) public void doTag() {
Tag docTag = findAncestor(this, DocumentTag.class);
((DocumentTag)docTag).addCitation(this.docID);
}
C) public void doStartTag() {
Tag docTag = findAncestor(this, DocumentTag.class);
((DocumentTag)docTag).addCitation(this.docID);
}
D) public void doTag() {
JspTag docTag = findAncestorWithClass(this, DocumentTag.class);
((DocumentTag)docTag).addCitation(this.docID);
}

Solutions: