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Oracle 1Z0-858 Exam Syllabus Topics:

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

1. Your web application uses a simple architecture in which servlets handle requests and then forward to a JSP using a request dispatcher. You need to pass information calculated by the servlet to the JSP; furthermore, that JSP uses a custom tag and must also process this information. This information must NOT be accessible to any other servlet, JSP or session in the webapp. How can you accomplish this goal?

A) Add an attribute to the context object before using the request dispatcher.
B) Add an attribute to the request object before using the request dispatcher.
C) This CANNOT be done as the tag handler has no means to extract this data.
D) Store the data in a public instance variable in the servlet.

2. Click the Exhibit button.
Assuming the tag library in the exhibit is imported with the prefix stock, which custom tag invocation outputs the contents of the variable exposed by the quote tag?

A) ${var}
<stock:quote symbol="SUNW" />
B) <stock:quote symbol="SUNW" var="quote" />
${quote}
C) <stock:quote symbol="SUNW" var="quote">
<%= quote %> </stock:quote>
D) <stock:quote symbol="SUNW" />
${var}
E) <stock:quote symbol="SUNW">
${var}
</stock:quote>

3. Given:
1.package com.example;
2.3.
public abstract class AbstractItem {
4.private String name;
...
13. }
Assume a concrete class com.example.ConcreteItem extends com.example.AbstractItem. A servlet sets a session-scoped attribute called "item" that is an instance of com.example.ConcreteItem and then forwards to a JSP page.
Which two are valid standard action invocations that expose a scripting variable to the JSP page? (Choose two.)

A) <jsp:useBean id="item" class="com.example.ConcreteItem"
scope="session" />
B) <jsp:useBean id="item" type="com.example.ConcreteItem"
class="com.example.AbstractItem"
scope="session" />
C) <jsp:useBean id="com.example.ConcreteItem"
scope="session" />
D) <jsp:useBean id="item" type="com.example.ConcreteItem"
scope="session" />

4. You are designing an n-tier Java EE application. You have already decided that some of your JSPs will need to get data from a Customer entity bean. You are trying to decide
whether to use a Customer stub object or a Transfer Object. Which two statements are true? (Choose two.)

A) The stub will increase the logic necessary in the JSPs.
B) Only the Transfer Object will need to use a Business Delegate.
C) The Transfer Object will decrease data staleness.
D) In both cases, the JSPs can use EL expressions to get data.
E) Using the stub approach allows you to design the application without using a Service Locator.
F) The stub will increase network traffic.

5. Given:
11.
public class MyServlet extends HttpServlet {
12.
public void service(HttpServletRequest request,
13.
HttpServletResponse response)
14.
throws ServletException, IOException {
15.
// insert code here
16.
}
17.
}
and this element in the web application's deployment descriptor:
<error-page> <error-code>302</error-code> <location>/html/error.html</location> </error-page>
Which, inserted at line 15, causes the container to redirect control to the error.html resource?

A) response.setError(302);
B) response.sendErrorRedirect(302);
C) response.sendRedirect(302);
D) response.sendError(302);
E) response.setStatus(302);

Solutions: