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

1. Which security mechanism uses the concept of a realm?

A) authentication
B) authorization
C) confidentiality
D) data integrity

2. Given:
5.public class MyTagHandler extends TagSupport {
6.public int doStartTag() throws JspException {
7.try {
8.// insert code here
9.} catch(Exception ex) { /* handle exception */ }
10.
return super.doStartTag();
11.
} ...
42. }
Which code snippet, inserted at line 8, causes the value foo to be output?

A) print("foo");
B) JspWriter w = new JspWriter(pageContext.getResponse());
C) JspWriter w = pageContext.getOut();
D) JspWriter w = pageContext.getWriter();
E) print("foo");
F) print("foo");
G) print("foo");
H) JspWriter w = new JspWriter(pageContext.getWriter());

3. You want to create a filter for your web application and your filter will implement javax.servlet.Filter.
Which two statements are true? (Choose two.)

A) When your filter chains to the next filter, it should pass the same arguments it received in its doFilter method.
B) The method that your filter invokes on the object it received that implements javax.servlet.FilterChain can invoke either another filter or a servlet.
C) Your filter class must also implement javax.servlet.FilterChain.
D) Your filter class must implement an init method and a destroy method.
E) Your filter class must implement a doFilter method that takes, among other things, an HTTPServletRequest object and an HTTPServletResponse object.

4. A developer is designing a web application that must support multiple interfaces, including:
an XML web service for B2B HTML for web-based clients WML for wireless customers
Which design pattern provides a solution for this problem?

A) Chain of Responsibility
B) Model-View-Controller
C) Data Access Object
D) Business Delegate
E) Session Facade

5. Given:
3.class MyServlet extends HttpServlet {
4.public void doPut(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
5.// servlet code here ...
26.
}
27.
}
If the DD contains a single security constraint associated with MyServlet and its only <httpmethod> 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 GET.
B) A user whose role is Member can perform a POST.
C) A user whose role is Member can perform a GET.
D) A user whose role is Member can perform a PUT.
E) A user whose role is Admin can perform a PUT.
F) A user whose role is Admin can perform a POST.

Solutions: