SCWCD-9

04/14/2008

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Which statement best expresses the purpose of a tag library descriptor (TLD) in
an EL function?

a It contains the Java code that will be compiled.
b It invokes the Java method as part of the JSP.
c It matches the tag library with a URI.
d It matches function names to tags that can be used in the JSP.

Answer:
d

Which design pattern allows you to decouple the business logic, data representation,
and data presentation?
(Select one)
a Model-View-Controller
b Transfer Object
c Bimodal Data Access
d Business Delegate
Answer: a

Which of the following is a valid way of getting a bean’s property? (Select one)
a <jsp:useBean action="get" id="address" property="city" />
b <jsp:getProperty id="address" property="city" />
c <jsp:getProperty name="address" property="city" />
d <jsp:getProperty bean="address" property="*" />

Answer:
c

Which of the following web.xml snippets correctly defines the use of a tag
library?
(Select one)
a <taglib>
<uri>http://www.abc.com/sample.tld</uri>
<location>/WEB-INF/sample.tld</location>
</taglib>
b <tag-lib>
<taglib-uri>http://www.abc.com/sample.tld</taglib-uri>
<taglib-location>/WEB-INF/sample.tld</taglib-location>
</tag-lib>
c <taglib>
<taglib-uri>http://www.abc.com/sample.tld</taglib-uri>
<taglib-location>/WEB-INF/sample.tld</taglib-location>
</taglib>
d <tag-lib>
<taglib>http://www.abc.com/sample.tld</taglib-uri>
<taglib>/WEB-INF/sample.tld</taglib-location>
</tag-lib>

Answer:
c

Which object does a SimpleTag tag handler use to access implicit variables?
a PageContext
b BodyContent
c JspContext
d SimpleTagSupport
Answer: c

What is wrong with the following code?
public void doFilter(ServletRequest req, ServletResponse, res,
FilterChain chain)
throws ServletException, IOException {
chain.doFilter(req, res);
HttpServletRequest request = (HttpServletRequest)req;
HttpSession session = request.getSession();
if (session.getAttribute("login") == null) {
session.setAttribute("login"”, new Login());
}
}
a The doFilter() method signature is incorrect; it should take HttpServlet-
Request and HttpServletResponse.
b The doFilter() method should also throw FilterException.
c The call to chain.doFilter(req, res) should be this.doFilter(req, res,
chain).
d Accessing the request after chain.doFilter() results in an IllegalState-
Exception.
e Nothing is wrong with this filter.

Answer:
e

 


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