To take advantage of the capabilities of modern browsers that use web standards, such as XHTML and CSS, your web application is being converted from simple JSP pages to JSP Document format. However, one of your JSPs, /scripts/screenFunctions.jsp, generates a JavaScript file. This file is included in several web forms to create screen-specific validation functions and are included in these pages with the following statement:
10. <head>
11. <script src='/scripts/screenFunctions.jsp'
12. language='javascript'
13. type='application/javascript'> </script>
14. </head>
15. <!-- body of the web form -->
Which JSP code snippet declares that this JSP Document is a JavaScript file?
A. <%@ page contentType='application/javascript' %>
B. <jsp:page contentType='application/javascript'
/>
C. <jsp:document contentType='application/javascript'
/>
D. <jsp:directive.page contentType='application/javascript'
/>
E. No declaration is needed because the web form XHTML
page already declares the MIME
type of the /scripts/screenFunctions.jsp file in the
<script> tag.
Q: 2
Given the JSP code:
10. <html>
11. <body>
12. <jsp:useBean id='customer' class='com.example.Customer'
/>
13. Hello, ${customer.title} ${customer.lastName},
welcome
14. to Squeaky Beans, Inc.
15. </body>
16. </html>
Which three types of JSP code are used? (Choose three.)
A. Java code
B. template text
C. scripting code
D. standard action
E. expression language
Q: 3
You have built a collection of custom tags for your
web application. The TLD file is located in the file:
/WEB-INF/myTags.xml. You refer to these tags in your
JSPs using the symbolic name: myTags.
Which deployment descriptor element must you use to make this link between the symbolic name and the TLD file name?
A. <taglib>
<name>myTags</name>
<location>/WEB-INF/myTags.xml</location>
</taglib>
B. <tags>
<name>myTags</name>
<location>/WEB-INF/myTags.xml</location>
</tags>
C. <tags>
<tags-uri>myTags</taglib-uri>
<tags-location>/WEB-INF/myTags.xml</tags-location>
</tags>
D. <taglib>
<taglib-uri>myTags</taglib-uri>
<taglib-location>/WEB-INF/myTags.xml</taglib-location>
</taglib>
Q: 4
Which implicit object is used in a JSP page to retrieve
values associated with <context-param> entries in the deployment descriptor?
A. config
B. request
C. session
D. application
Q: 5
You have created a JSP that includes instance variables
and a great deal of scriptlet code.
Unfortunately, after extensive load testing, you have
discovered several race conditions in your JSP scriptlet code. To fix these
problems would require significant recoding, but you are already behind
schedule. Which JSP code snippet can you use to resolve these concurrency
problems?
A. <%@ page isThreadSafe='false' %>
B. <%@ implements SingleThreadModel %>
C. <%! implements SingleThreadModel %>
D. <%@ page useSingleThreadModel='true' %>
E. <%@ page implements='SingleThreadModel' %>
Q: 6
A developer for the company web site has been told
that users may turn off cookie support in their browsers. What must the
developer do to ensure that these customers can still use the web application?
A. The developer must ensure that every URL is properly
encoded using the appropriate URL rewriting APIs.
B. The developer must provide an alternate mechanism
for managing sessions and abandon the HttpSession mechanism entirely.
C. The developer can ignore this issue. Web containers
are required to support automatic URL rewriting when cookies are not supported.
D. The developer must add the string id=<sessionid>
to the end of every URL to ensure that the conversation with the browser
can continue.
Q: 7
You are building a web application that will be used
throughout the European Union; therefore, it has significant internationalization
requirements. You have been tasked to create a custom tag that generates
a message using the java.text.MessageFormat class. The tag will take the
resourceKey attribute and a variable number of argument attributes with
the format, arg<N>.
Here is an example use of this tag and its output:
<t:message resourceKey='diskFileMsg' arg0='MyDisk'
arg1='1247' />
generates:
The disk "MyDisk" contains 1247 file(s).
Which Simple tag class definition accomplishes this goal of handling a variable number of tag attributes?
A. public class MessageTag extends SimpleTagSupport implements
VariableAttributes { private Map attributes = new HashMap(); public void
setVariableAttribute(String uri, String name, Object value) { this.attributes.put(name,
value);
}
// more tag handler methods
}
B. The Simple tag model does NOT support a variable number
of attributes.
C. public class MessageTag extends SimpleTagSupport
implements DynamicAttributes {
private Map attributes = new HashMap();
public void putAttribute(String name, Object value) {
this.attributes.put(name, value);
}
// more tag handler methods
}
D. public class MessageTag extends SimpleTagSupport implements
VariableAttributes {
private Map attributes = new HashMap();
public void putAttribute(String name, Object value) {
this.attributes.put(name, value);
}
// more tag handler methods
}
E. public class MessageTag extends SimpleTagSupport implements
DynamicAttributes {
private Map attributes = new HashMap();
public void setDynamicAttribute(String uri, String name,
Object value) {
this.attributes.put(name, value);
}
// more tag handler methods
}
Q: 8
Given the JSP code:
<% request.setAttribute("foo", "bar"); %>
and the Classic tag handler code:
5. public int doStartTag() throws JspException {
6. // insert code here
7. // return int
8. }
Assume there are no other "foo" attributes in the
web application.
Which invocation on the pageContext object, inserted at line 6, assigns "bar" to the variable x?
A. String x = (String) pageContext.getAttribute("foo");
B. String x = (String) pageContext.getRequestScope("foo");
C. It is NOT possible to access the pageContext object
from within doStartTag.
D. String x = (String) pageContext.getRequest().getAttribute("foo");
E. String x = (String) pageContext.getAttribute("foo",
PageContext.ANY_SCOPE);
Q: 9
Which two statements about tag files are true? (Choose
two.)
A. Classic tag handlers and tag files CANNOT reside in
the same tag library.
B. A file named foo.tag, located in /WEB-INF/tags/bar,
is recognized as a tag file by the container.
C. A file named foo.tag, bundled in a JAR file but NOT
defined in a TLD, triggers a container translation error.
D. A file named foo.tag, located in a web application's
root directory, is recognized as a tag file by the container.
E. If files foo1.tag and foo2.tag both reside in /WEB-INF/tags/bar,
the container will consider them part of the same tag library.
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Answers:
1) D
2) B, D, E
3) D
4) D
5) A
6) A
7) E
8) D
9) B, E
