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Oracle 1Z0-858 Exam Syllabus Topics:

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

1. Which is a benefit of precompiling a JSP page?

A) It avoids initialization on the first request.
B) It provides the ability to debug runtime errors in the application.
C) It avoids execution of the _jspService method on the first request.
D) It provides better performance on the first request for the JSP page.

2. A developer chooses to avoid using SingleThreadModel but wants to ensure that data is updated in a thread-safe manner. Which two can support this design goal? (Choose two.)

A) Store the data in the ServletContext object.
B) Store the data in the HttpSession object.
C) Store the data in an instance variable.
D) Store the data in a local variable.
E) Store the data in the ServletRequest object.

3. Click the Exhibit button.
As a maintenance feature, you have created this servlet to allow you to upload and remove files on your web server. Unfortunately, while testing this servlet, you try to upload a file using an HTTP request and on this servlet, the web container returns a 404 status.
What is wrong with this servlet?

A) The doPut and doDelete methods do NOT map to the proper HTTP methods.
B) The servlet needs a service method to dispatch the requests to the helper methods.
C) HTTP does NOT support file upload operations.
D) The servlet constructor must NOT have any parameters.

4. Given the security constraint in a DD:
101.
<security-constraint>
102.
<web-resource-collection>
103.
<web-resource-name>Foo</web-resource-name>
104.
<url-pattern>/Bar/Baz/*</url-pattern>
105.
<http-method>POST</http-method>
106.
</web-resource-collection>
107.
<auth-constraint>
108.
<role-name>DEVELOPER</role-name>
109.
</auth-constraint>
110.
</security-constraint>
And given that "MANAGER" is a valid role-name, which four are true for this security constraint? (Choose four.)

A) DEVELOPER can do only a POST on resources in the /Bar/Baz directory.
B) DEVELOPER can do a GET on resources in the /Bar/Baz directory.
C) MANAGER can do a GET on resources in the /Bar/Baz directory.
D) MANAGER can do a TRACE on any resource in the /Bar/Baz directory.
E) DEVELOPER can do a TRACE on any resource in the /Bar/Baz directory.
F) MANAGER can do a POST on any resource in the /Bar/Baz directory.

5. In which two locations can library dependencies be defined for a web application? (Choose two.)

A) the /META-INF/dependencies.xml file
B) the /META-INF/MANIFEST.MF manifest file
C) the web application deployment descriptor
D) the /META-INF/MANIFEST.MF manifest of a JAR in the web application classpath

Solutions: