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SUN Sun Certified Web Component Developer for J2EE 5 Sample Questions:

1. Given:
1 . <% int[] nums = {42,420,4200};
2 . request.setAttribute("foo", nums); %>
3 . ${5 + 3 lt 6}
4 . ${requestScope['foo'][0] ne 10 div 0}
5 . ${10 div 0}
What is the result?

A) false true Infinity
B) An exception is thrown.
C) false true 0
D) true true
E) false true
F) Compilation or translation fails.
G) true true Infinity

2. A developer is designing a multi-tier web application and discovers a need to hide the details of establishing and maintaining remote communications from the client. In addition, the application needs to find, in a transparent manner, the heterogeneous business components used to service the client's requests. Which design patterns, working together, address these issues?

A) Front Controller and Business Delegate
B) Model-View-Controller and Intercepting Filter
C) Intercepting Filter and Transfer Object
D) Business Delegate and Transfer Object
E) Business Delegate and Service Locator

3. Which ensures that a JSP response is of type "text/plain"?

A) <%@ page contentType="text/plain" %>
B) <%@ page mimeType="text/plain" %>
C) <% response.setEncoding("text/plain"); %>
D) <%@ page contentEncoding="text/plain" %>
E) <% response.setMimeType("text/plain"); %>
F) <%@ page pageEncoding="text/plain" %>

4. Which two security mechanisms can be directed through a sub-element of the <user-data- constraint> element in a web application deployment descriptor? (Choose two.)

A) authorization
B) data integrity
C) confidentiality
D) authentication

5. You are creating a content management system (CMS) with a web application front-end.
The JSP that displays a given document in the CMS has the following general structure:
1 . <%-- tag declaration --%>
2 . <t:document>
...
11. <t:paragraph>... <t:citation docID='xyz' /> ...</t:paragraph>
...
99. </t:document>
The citation tag must store information in the document tag for the document tag to generate a reference section at the end of the generated web page.
The document tag handler follows the Classic tag model and the citation tag handler follows the Simple tag model. Furthermore, the citation tag could also be embedded in other custom tags that could have either the Classic or Simple tag handler model.
Which tag handler method allows the citation tag to access the document tag?

A) public void doTag() {
JspTag docTag = findAncestorWithClass(this, DocumentTag.class);
((DocumentTag)docTag).addCitation(this.docID);
}
B) public void doStartTag() {
Tag docTag = findAncestor(this, DocumentTag.class);
((DocumentTag)docTag).addCitation(this.docID);
}
C) public void doStartTag() {
JspTag docTag = findAncestorWithClass(this, DocumentTag.class);
((DocumentTag)docTag).addCitation(this.docID);
}
D) public void doTag() {
Tag docTag = findAncestor(this, DocumentTag.class);
((DocumentTag)docTag).addCitation(this.docID);
}

Solutions: