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SUN 310-083 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Servlet Technology | - Servlet lifecycle and API - Session management - Request and response handling - Filters and listeners |
| Web Application Design and Architecture | - Request dispatching - Security considerations - MVC design pattern |
| JavaServer Pages (JSP) | - Custom tags and tag libraries - JSP standard actions - Expression Language (EL) - JSP lifecycle |
| Deployment Descriptor and Configuration | - web.xml configuration - Servlet and filter mapping - Context initialization parameters |
| JavaServer Pages Standard Tag Library (JSTL) | - Core tags - Formatting and functions libraries |
SUN Sun Certified Web Component Developer for J2EE 5 Sample Questions:
Which two are true regarding a web application class loader? (Choose two.)
- A. Resources in the WAR class directory or in any of the JAR files within the library directory CANNOT be accessed using the J2SE semantics of getResource.
- B. A web application may override the web container's implementation classes.
- C. A web application running in a J2EE product may override classes in the javax.* namespace.
- D. Resources in the WAR class directory or in any of the JAR files within the library directory may be accessed using the J2SE semantics of getResource.
- E. A web application class loader may NOT override any classes in the java.* and javax.* namespaces.
A developer wants a web application to be notified when the application is about to be shut down. Which two actions are necessary to accomplish this goal? (Choose two.)
- A. include a class implementing ContextDestroyedListener as part of the web application deployment
- B. include a class implementing HttpSessionAttributeListener as part of the web application deployment
- C. include a listener directive in a JSP page
- D. configure a listener in the application deployment descriptor, using the <listener> element
- E. include a <servlet-destroy> element in the web application deployment descriptor
- F. include a class implementing ServletContextListener as part of the web application deployment
- G. configure a listener in the TLD file using the <listener> element
You have built a web application with tight security. Several directories of your webapp are used for internal purposes and you have overridden the default servlet to send an HTTP
403 status code for any request that maps to one of these directories. During testing, the
Quality Assurance director decided that they did NOT like seeing the bare response page generated by Firefox and Internet Explorer. The director recommended that the webapp should return a more user-friendly web page that has the same look-and-feel as the webapp plus links to the webapp's search engine. You have created this JSP page in the
/WEB-INF/jsps/error403.jsp file. You do NOT want to alter the complex logic of the default servlet. How can you declare that the web container must send this JSP page whenever a
4 03 status is generated?
- A. <error-page>
< status-code>403</status-code>
< url>/WEB-INF/jsps/error403.jsp</url>
< /error-page> - B. <error-page>
< error-code>403</error-code>
< url>/WEB-INF/jsps/error403.jsp</url>
< /error-page> - C. <error-page>
< error-code>403</error-code>
< location>/WEB-INF/jsps/error403.jsp</location>
< /error-page> - D. <error-page>
< status-code>403</status-code>
< location>/WEB-INF/jsps/error403.jsp</location>
< /error-page>
Click the Exhibit button. Given the web application deployment descriptor elements:
1 1. <filter>
1 2. <filter-name>ParamAdder</filter-name>
1 3. <filter-class>com.example.ParamAdder</filter-class>
1 4. </filter>
...
3 1. <filter-mapping>
3 2. <filter-name>ParamAdder</filter-name>
3 3. <servlet-name>Destination</servlet-name>
3 4. </filter-mapping>
...
5 5. <servlet-mapping>
5 6. <servlet-name>Destination</servlet-name>
5 7. <url-pattern>/dest/Destination</url-pattern>
5 8. </servlet-mapping>
What is the result of a client request of the Source servlet with no query string?
- A. The output "filterAdded = null" is written to the response stream.
- B. An exception is thrown at runtime within the service method of the Source servlet.
- C. The output "filterAdded = addedByFilter" is written to the response stream.
- D. An exception is thrown at runtime within the service method of the Destination servlet.
Click the Exhibit button.
As a maintenance feature, you have created this servlet to allow you to upload and remove files on your web server. Unfortunately, while testing this servlet, you try to upload a file using an HTTP request and on this servlet, the web container returns a 404 status.
What is wrong with this servlet?
- A. The servlet needs a service method to dispatch the requests to the helper methods.
- B. HTTP does NOT support file upload operations.
- C. The servlet constructor must NOT have any parameters.
- D. The doPut and doDelete methods do NOT map to the proper HTTP methods.
