SUN 310-083

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

1. A developer is designing a multi-tier web application and discovers a need to log each incoming client request. Which two patterns, taken independently, provide a solution for this problem? (Choose two.)

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

2. You are building a dating service web site. Part of the form to submit a client's profile is a group of radio buttons for the person's hobbies:
20. <input type='radio' name='hobbyEnum' value='HIKING'>Hiking <br>
21. <input type='radio' name='hobbyEnum' value='SKIING'>Skiing <br>
22. <input type='radio' name='hobbyEnum' value='SCUBA'>SCUBA Diving
23. <!-- and more options -->
After the user submits this form, a confirmation screen is displayed with these hobbies listed. Assume that an application-scoped variable, hobbies, holds a map between the
Hobby enumerated type and the display name.
Which EL code snippet will display Nth element of the user's selected hobbies?

A) ${hobbies[paramValues@'hobbyEnum'@N]}
B) ${hobbies[paramValues.hobbyEnum[N]]}
C) ${hobbies[paramValues.hobbyEnum.get(N)]}
D) ${hobbies[hobbyEnum[N]}
E) ${hobbies.get(paramValues.hobbyEnum[N])}

3. Which JSTL code snippet can be used to perform URL rewriting?

A) <a href='<c:url value="foo.jsp"/>' />
B) <a href='<c:link url="foo.jsp"/>' />
C) <a href='<c:url url="foo.jsp"/>' />
D) <a href='<c:link value="foo.jsp"/>' />

4. You have created a web application that you license to real estate brokers. The webapp is highly customizable including the email address of the broker, which is placed on the footer of each page. This is configured as a context parameter in the deployment descriptor:
1 0. <context-param>
1 1. <param-name>footerEmail</param-name>
1 2. <param-value>[email protected]</param-value>
1 3. </context-param>
Which EL code snippet will insert this context parameter into the footer?

A) <a href='mailto:${contextParam.footerEmail}'>Contact me</a>
B) <a href='mailto:${initParam.footerEmail}'>Contact me</a>
C) <a href='mailto:${footerEmail}'>Contact me</a>
D) <a href='mailto:${initParam@footerEmail}'>Contact me</a>
E) <a href='mailto:${contextParam@footerEmail}'>Contact me</a>

5. For which three events can web application event listeners be registered? (Choose three.)

A) when a servlet has forwarded a request
B) when a cookie has been created
C) when a session is created
D) when a session has timed out
E) after a servlet is destroyed
F) when a session attribute value is changed

Solutions: