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

1. Assume the tag handler for a st:simple tag extends SimpleTagSupport. In what way can scriptlet code be used in the body of st:simple?

A) set the body content type to JSP in the TLD
B) Scriptlet code is NOT legal in the body of st:simple.
C) add a pass-through Classic tag with a body content type of JSP to the body of st:simple, and place the scriptlet code in the body of that tag
D) add scripting-enabled="true" to the start tag for the st:simple element

2. Given:
3.public class MyTagHandler extends TagSupport {
4.public int doStartTag() {
5.// insert code here
6.// return an int
7.}
8.// more code here
...
18. }
There is a single attribute foo in the session scope.
Which three code fragments, inserted independently at line 5, return the value of the attribute? (Choose three.)

A) Object o = pageContext.getAttribute("foo");
B) Object o = pageContext.findAttribute("foo");
C) HttpServletRequest r = pageContext.getRequest(); Object o = r.getAttribute("foo");
D) HttpSession s = pageContext.getSession(); Object o = s.getAttribute("foo");
E) Object o = pageContext.getAttribute("foo", PageContext.SESSION_SCOPE);

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

4. You web application uses a lot of Java enumerated types in the domain model of the application. Built into each enum type is a method, getDisplay(), which returns a localized, user-oriented string. There are many uses for presenting enums within the web application, so your manager has asked you to create a custom tag that iterates over the set of enum values and processes the body of the tag once for each value; setting the value into a page-scoped attribute called, enumValue. Here is an example of how this tag is used:
10.
<select name='season'>
11.
<t:everyEnum type='com.example.Season'>
12.
<option value='${enumValue}'>${enumValue.display}</option>
13.
</t:everyEnum>
14.
</select>
You have decided to use the Simple tag model to create this tag handler.
Which tag handler method will accomplish this goal?

A) public void doTag() throw JspException {
try {
for ( Enum value : getEnumValues() ) {
pageContext.setAttribute("enumValue", value);
getJspBody().invoke(getJspContext().getWriter());
}
} (Exception e) { throw new JspException(e); }
}
B) public void doTag() throw JspException {
try {
for ( Enum value : getEnumValues() ) {
getJspContext().setAttribute("enumValue", value);
getJspBody().invoke(getJspContext().getWriter());
}
} (Exception e) { throw new JspException(e); }
}
C) public void doTag() throw JspException {
try {
for ( Enum value : getEnumValues() ) {
pageContext.setAttribute("enumValue", value);
getJspBody().invoke(getOut());
}
} (Exception e) { throw new JspException(e); }
}
D) public void doTag() throw JspException {
try {
for ( Enum value : getEnumValues() ) {
getJspContext().setAttribute("enumValue", value);
getJspBody().invoke(null);
}
} (Exception e) { throw new JspException(e); }
}

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

Solutions: