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

1. You have built your own light-weight templating mechanism. Your servlets, which handle each request, dispatch the request to one of a small set of template JSP pages. Each template JSP controls the layout of the view by inserting the header, body, and footer elements into specific locations within the template page. The URLs for these three elements are stored in request-scoped variables called, headerURL, bodyURL, and footerURL, respectively. These attribute names are never used for other purposes. Which JSP code snippet should be used in the template JSP to insert the JSP content for the body of the page?

A) <jsp:include file='${bodyURL}' />
B) <jsp:insert file='${bodyURL}' />
C) <jsp:include page='${bodyURL}' />
D) <jsp:insert page='${bodyURL}' />
E) <jsp:include page='<%= bodyURL %>' />
F) <jsp:insert page='<%= bodyURL %>' />

2. Which statement is true about web container session management?

A) The JSESSIONID cookie is stored permanently on the client so that a user may return to the web application and the web container will rejoin that session.
B) Access to session-scoped attributes is guaranteed to be thread-safe by the web container.
C) If the web application uses HTTPS, then the web container may use the data on the HTTPS request stream to identify the client.
D) To activate URL rewriting, the developer must use the HttpServletResponse.setURLRewriting method.

3. You are creating a JSP page to display a collection of data. This data can be displayed in several different ways so the architect on your project decided to create a generic servlet that generates a comma-delimited string so that various pages can render the data in different ways. This servlet takes on request parameter: objectID. Assume that this servlet is mapped to the URL pattern: /WEB-INF/data.
In the JSP you are creating, you need to split this string into its elements separated by commas and generate an HTML <ul> list from the data.
Which JSTL code snippet will accomplish this goal?

A) <c:import varReader='dataString' url='/WEB-INF/data'>
<c:param name='objectID' value='${currentOID}' />
</c:import>
<ul>
<c:forTokens items'${dataString}' delims=',' var='item'>
<li>${item}</li>
</c:forTokens>
</ul>
B) <c:import varReader='dataString' url='/WEB-INF/data'>
<c:param name='objectID' value='${currentOID}' />
</c:import>
<ul>
<c:forTokens items'${dataString.split(",")}' var='item'>
<li>${item}</li>
</c:forTokens>
</ul>
C) <c:import var='dataString' url='/WEB-INF/data'>
<c:param name='objectID' value='${currentOID}' />
</c:import>
<ul>
<c:forTokens items'${dataString}' delims=',' var='item'>
<li>${item}</li>
</c:forTokens>
</ul>
D) <c:import var='dataString' url='/WEB-INF/data'>
<c:param name='objectID' value='${currentOID}' />
</c:import>
<ul>
<c:forTokens items'${dataString.split(",")}' var='item'>
<li>${item}</li>
</c:forTokens>
</ul>

4. A developer is designing a web application that must support multiple interfaces, including:
an XML web service for B2B HTML for web-based clients WML for wireless customers
Which design pattern provides a solution for this problem?

A) Model-View-Controller
B) Chain of Responsibility
C) Business Delegate
D) Data Access Object
E) Session Facade

5. In which two locations can library dependencies be defined for a web application? (Choose two.)

A) the /META-INF/dependencies.xml file
B) the /META-INF/MANIFEST.MF manifest file
C) the web application deployment descriptor
D) the /META-INF/MANIFEST.MF manifest of a JAR in the web application classpath

Solutions: