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

1. You have built a collection of custom tags for your web application. The TLD file is located in the file: /WEB-INF/myTags.xml. You refer to these tags in your JSPs using the symbolic name: myTags. Which deployment descriptor element must you use to make this link between the symbolic name and the TLD file name?

A) <taglib>
<taglib-uri>myTags</taglib-uri>
<taglib-location>/WEB-INF/myTags.xml</taglib-location>
</taglib>
B) <tags>
<name>myTags</name>
<location>/WEB-INF/myTags.xml</location>
</tags>
C) <taglib>
<name>myTags</name>
<location>/WEB-INF/myTags.xml</location>
</taglib>
D) <tags>
<tags-uri>myTags</taglib-uri>
<tags-location>/WEB-INF/myTags.xml</tags-location>
</tags>

2. You have created a servlet that generates weather maps. The data for these maps is
calculated by a remote host. The IP address of this host is usually stable, but occasionally does have to change as the corporate network grows and changes. This IP address used to be hard coded, but after the fifth change to the IP address in two years, you have decided that this value should be declared in the deployment descriptor so you do NOT have the recompile the web application every time the IP address changes. Which deployment descriptor snippet accomplishes this goal?

A) <servlet>
<!-- servlet definition here -->
<param-name>WeatherServlet.hostIP</param-name>
<param-value>127.0.4.20</param-value>
</servlet>
B) <serlvet-param>
<name>WeatherServlet.hostIP</name>
<value>127.0.4.20</value>
</servlet-param>
C) <init-param>
<param-name>WeatherServlet.hostIP</param-name>
<param-value>127.0.4.20</param-value>
</init-param>
D) <serlvet-param>
<param-name>WeatherServlet.hostIP</param-name>
<param-value>127.0.4.20</param-value>
</servlet-param>
E) <init-param>
<name>WeatherServlet.hostIP</name>
<value>127.0.4.20</value>
</init-param>

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

4. Given an HttpServletRequest request and HttpServletResponse response, which sets a cookie "username" with the value "joe" in a servlet?

A) request.addCookie(new Cookie("username", "joe"))
B) response.addCookie("username", "joe")
C) response.addCookie(new Cookie("username", "joe"))
D) response.addHeader(new Cookie("username", "joe"))
E) request.addCookie("username", "joe")
F) request.addHeader(new Cookie("username", "joe"))
G) request.setCookie("username", "joe")

5. Which statement is true if the doStartTag method returns EVAL_BODY_BUFFERED ?

A) It is never legal to return EVAL_BODY_BUFFERED from doStartTag.
B) The doAfterBody method is NOT called.
C) The setBodyContent method is called once.
D) The tag handler must implement BodyTag.

Solutions: