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SUN 310-083 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Web Application Design and Architecture | - Security considerations - MVC design pattern - Request dispatching |
| Topic 2: JavaServer Pages (JSP) | - JSP standard actions - Custom tags and tag libraries - JSP lifecycle - Expression Language (EL) |
| Topic 3: JavaServer Pages Standard Tag Library (JSTL) | - Core tags - Formatting and functions libraries |
| Topic 4: Servlet Technology | - Servlet lifecycle and API - Filters and listeners - Session management - Request and response handling |
| Topic 5: Deployment Descriptor and Configuration | - Context initialization parameters - web.xml configuration - Servlet and filter mapping |
SUN Sun Certified Web Component Developer for J2EE 5 Sample Questions:
Your web site has many user-customizable features, for example font and color preferences on web pages. Your IT department has already built a subsystem for user preferences using the Java SE platform's lang.util.prefs package APIs, and you have been ordered to reuse this subsystem in your web application. You need to create an event listener that constructs the preferences factory and stores it in the application scope for later use. Furthermore, this factory requires that the URL to a database must be declared in the deployment descriptor like this:
4 2. <context-param>
4 3. <param-name>prefsDbURL</param-name>
4 4. <param-value>
4 5. jdbc:pointbase:server://dbhost:4747/prefsDB
4 6. </param-value>
4 7. </context-param>
Which partial listener class will accomplish this goal?
- A. public class PrefsFactoryInitializer implements ContextListener {
public void contextCreated(ServletContext ctx) {
String prefsURL = ctx.getParameter("prefsDbURL");
PreferencesFactory myFactory = makeFactory(prefsURL);
ctx.putAttribute("myPrefsFactory", myFactory);
}
// more code here
} - B. public class PrefsFactoryInitializer implements ServletContextListener { public void contextCreated(ServletContext ctx) {
String prefsURL = ctx.getInitParameter("prefsDbURL");
PreferencesFactory myFactory = makeFactory(prefsURL);
ctx.setAttribute("myPrefsFactory", myFactory);
}
// more code here
} - C. public class PrefsFactoryInitializer implements ContextListener {
public void contextInitialized(ServletContextEvent e) {
ServletContext ctx = e.getContext();
String prefsURL = ctx.getParameter("prefsDbURL");
PreferencesFactory myFactory = makeFactory(prefsURL);
ctx.putAttribute("myPrefsFactory", myFactory);
}
// more code here
} - D. public class PrefsFactoryInitializer implements ServletContextListener { public void contextInitialized(ServletContextEvent e) {
ServletContext ctx = e.getServletContext();
String prefsURL = ctx.getInitParameter("prefsDbURL");
PreferencesFactory myFactory = makeFactory(prefsURL);
ctx.setAttribute("myPrefsFactory", myFactory);
}
// more code here
}
Correct Answer: D 🗳️
You are building JSP pages that have a set of menus that are visible based on a user's security role. These menus are hand-crafted by your web design team; for example, the
SalesManager role has a menu in the file /WEB-INF/html/sales-mgr-menu.html. Which JSP code snippet should be used to make this menu visible to the user?
- A. <jsp:if test='request.isUserInRole("SalesManager")'>
< %@ include file='/WEB-INF/html/sales-mgr-menu.html' %>
< /jsp:if> - B. <jsp:if test='request.isUserInRole("SalesManager")'>
< jsp:include file='/WEB-INF/html/sales-mgr-menu.html' />
< /jsp:if> - C. <% if ( request.isUserInRole("SalesManager") ) { %>
< jsp:include file='/WEB-INF/html/sales-mgr-menu.html' />
< % } %> - D. <% if ( request.isUserInRole("SalesManager") ) { %>
< %@ include file='/WEB-INF/html/sales-mgr-menu.html' %>
< % } %>
Correct Answer: D 🗳️
Which JSTL code snippet can be used to perform URL rewriting?
- A. <a href='<c:url url="foo.jsp"/>' />
- B. <a href='<c:link value="foo.jsp"/>' />
- C. <a href='<c:link url="foo.jsp"/>' />
- D. <a href='<c:url value="foo.jsp"/>' />
Correct Answer: D 🗳️
Which three are valid values for the body-content attribute of a tag directive in a tag file?
(Choose three.)
- A. dynamic
- B. JSP
- C. EL
- D. empty
- E. tagdependent
- F. scriptless
Correct Answer: D,E,F 🗳️
In which three directories, relative to a web application's root, may a tag library descriptor file reside when deployed directly into a web application? (Choose three.)
- A. /WEB-INF/resources
- B. /META-INF/tlds
- C. /WEB-INF/tlds
- D. /META-INF
- E. /META-INF/resources
- F. /WEB-INF
Correct Answer: A,C,F 🗳️
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