Oracle Java Technology 1Z0-858

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Oracle 1Z0-858 Exam Syllabus Topics:

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

1. Which method must be used to encode a URL passed as an argument to HttpServletResponse.sendRedirect when using URL rewriting for session tracking?

A) HttpServletResponse.encodeURL
B) ServletResponse.encodeRedirectURL
C) HttpServletResponse.encodeRedirectURL
D) ServletResponse.encodeURL

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

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

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

4. One of the use cases in your web application uses many session-scoped attributes. At the end of the use case, you want to clear out this set of attributes from the session object. Assume that this static variable holds this set of attribute names:
201.
private static final Set<String> USE_CASE_ATTRS;
202.
static {
203.
USE_CASE_ATTRS.add("customerOID");
204.
USE_CASE_ATTRS.add("custMgrBean");
205.
USE_CASE_ATTRS.add("orderOID");
206.
USE_CASE_ATTRS.add("orderMgrBean");
207.
}
Which code snippet deletes these attributes from the session object?

A) session.deleteAllAttributes(USE_CASE_ATTRS);
B) session.removeAll(USE_CASE_ATTRS);
C) for ( String attr : USE_CASE_ATTRS ) {
session.removeAttribute(attr);
}
D) for ( String attr : USE_CASE_ATTRS ) { session.remove(attr); }
E) for ( String attr : USE_CASE_ATTRS ) {
session.deleteAttribute(attr);
}

5. What is true about Java EE authentication mechanisms?

A) To use Java EE FORM authentication, you must declare two HTML files in your deployment descriptor, and you must use a predefined action in the HTML file that handles your user's login.
B) If your deployment descriptor correctly declares an authentication type of CLIENT_CERT, your users must have a certificate from an official source before they can use your application.
C) If your deployment descriptor correctly declares an authentication type of BASIC, the container automatically requests a user name and password whenever a user starts a new session.
D) If you want your web application to support the widest possible array of browsers, and you want to perform authentication, the best choice of Java EE authentication mechanisms is DIGEST.

Solutions: