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

1. 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 403 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>

2. In your web application, you need to execute a block of code whenever the session object is first created. Which design will accomplish this goal?

A) Create an HttpSessionListener class and implement the sessionInitialized method with that block of code.
B) Create a Filter class, call the getSession(true) method, and if the result was NOT null, then execute that block of code.
C) Create an HttpSessionListener class and implement the sessionCreated method with that block of code.
D) Create an HttpSessionActivationListener class and implement the sessionCreated method with that block of code.
E) Create a Filter class, call the getSession(false) method, and if the result was null, then execute that block of code.

3. A developer is designing a web application that must verify for each request:
The originating request is from a trusted network.
The client has a valid session.
The client has been authenticated.
Which design pattern provides a solution in this situation?

A) Model-View-Controller
B) Template Method
C) Session Facade
D) Transfer Object
E) Intercepting Filter

4. You need to create a servlet filter that stores all request headers to a database for all requests to the web application's home page "/index.jsp". Which HttpServletRequest method allows you to retrieve all of the request headers?

A) java.util.Iterator getHeaderNames()
B) String[] getHeaderNames()
C) java.util.Enumeration getRequestHeaders()
D) String[] getRequestHeaders()
E) java.util.Enumeration getHeaderNames()
F) java.util.Iterator getRequestHeaders()

5. Which two are valid and equivalent? (Choose two.)

A) <%= int i; %>
B) <jsp:expr>int i;</jsp:expr>
C) <%! int i; %>
D) <jsp:scriptlet>int i;</jsp:scriptlet>
E) <jsp:declaration>int i;</jsp:declaration>

Solutions: