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

1. Which two are true concerning the objects available to developers creating tag files? (Choose two.)

A) The session object must be declared explicitly.
B) The JspContext for the tag file is available through the implicit jspContext object.
C) The servlet context is available through the implicit servletContext object.
D) The output stream is available through the implicit outStream object.
E) The request and response objects are available implicitly.

2. 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) <%@ implements SingleThreadModel %>
B) <%@ page isThreadSafe='false' %>
C) <%@ page useSingleThreadModel='true' %>
D) <%! implements SingleThreadModel %>
E) <%@ page implements='SingleThreadModel' %>

3. A web application contains a tag file called beta.tag in /WEB-INF/tags/alpha. A JSP page called sort.jsp exists in the web application and contains only this JSP code:
1.<%@ taglib prefix="x"
2.tagdir="/WEB-INF/tags/alpha" %>
3.<x:beta />
The sort.jsp page is requested.
Which two are true? (Choose two.)

A) The sort.jsp page translates successfully and invokes the tag defined by beta.tag.
B) The sort.jsp page produces a translation error because a taglib directive must always have a uri attribute.
C) The tagdir attribute in line 2 can be replaced by a uri attribute if a TLD referring to beta.tag is created and added to the web application.
D) Tag files can only be accessed using a tagdir attribute.
E) The sort.jsp page produces a translation error because the tagdir attribute on lines 1-2 specifies a directory other than /WEB-INF/tags, which is illegal.
F) Tag files can only be placed in /WEB-INF/tags, and NOT in any subdirectories of /WEB-INF/tags.

4. Assume the tag handler for a st:simple tag extends SimpleTagSupport. In what way can scriptlet code be used in the body of st:simple?

A) add scripting-enabled="true" to the start tag for the st:simple element
B) set the body content type to JSP in the TLD
C) Scriptlet code is NOT legal in the body of st:simple.
D) add a pass-through Classic tag with a body content type of JSP to the body of st:simple, and place the scriptlet code in the body of that tag

5. 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) Business Delegate
C) Data Access Object
D) Chain of Responsibility
E) Session Facade

Solutions: