Oracle 1Z0-858 : Java Enterprise Edition 5 Web Component Developer Certified Professional Exam

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

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

2. A custom tag is defined to take three attributes. Which two correctly invoke the tag within a JSP page? (Choose two.)

A) <prefix:myTag attributes={"foo","bar","baz"} />
B) <prefix:myTag a="foo" b="bar" c="baz" />
C) <prefix:myTag jsp:attribute a="foo" b="bar" c="baz" />
D) <prefix:myTag>
<jsp:attribute a:foo b:bar c:baz />
</prefix:myTag>
E) <prefix:myTag>
<jsp:attribute ${"foo", "bar", "baz"} />
</prefix:myTag>
F) <prefix:myTag>
<jsp:attribute name="a">foo</jsp:attribute>
<jsp:attribute name="b">bar</jsp:attribute>
<jsp:attribute name="c">baz</jsp:attribute>
</prefix:myTag>
G) <prefix:myTag>
<jsp:attribute a="foo" b="bar" c="baz"/> </prefix:myTag>

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

4. Given a JSP page:
11.
<n:recurse>
12.
<n:recurse>
13.
<n:recurse>
14.
<n:recurse />
15.
</n:recurse>
16.
</n:recurse>
17.
</n:recurse>
The tag handler for n:recurse extends SimpleTagSupport.
Assuming an n:recurse tag can either contain an empty body or another n:recurse tag, which strategy allows the tag handler for n:recurse to output the nesting depth of the deepest n:recurse tag?

A) It is impossible to determine the deepest nesting depth because it is impossible for tag handlers that extend SimpleTagSupport to communicate with their parent and child tags.
B) Create a private non-static attribute in the tag handler class called count of type int initialized to 0. Increment count in the doTag method. If the tag has a body, invoke the fragment for that body. Otherwise, output the value of count.
C) If the tag has a body, invoke the fragment for that body.Otherwise, start a counter at 1. Call getParent(). If it returns null, output the value of the counter Otherwise, increment the counter and continue from where getParent() is called.
D) Start a counter at 1. Call getChildTags(). If it returns null, output the value of the counter. Otherwise, increment counter and continue from where getChildTags() is called. Skip processing of the body.

5. 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 {
12.
String sessionID = request.getParameter("sessionID");
13.
HttpSession session = getSession(sessionID);
14.
long age = // your code here
15.
response.getWriter().print(age);
16.
} ... // more code here
47. }
Which code snippet on line 14, will determine the age of the session?

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

Solutions: