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Oracle 1Z0-858 Exam Syllabus Topics:

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

1. A developer has used this code within a servlet:
62.
if(request.isUserInRole("vip")) {
63.
// VIP-related logic here
64.
}
What else must the developer do to ensure that the intended security goal is achieved?

A) declare a security-role-ref for vip in the deployment descriptor
B) define a group within the security realm and call it vip
C) define a security-role named vip in the deployment descriptor
D) create a user called vip in the security realm

2. Given this fragment from a Java EE deployment descriptor:
341.
<error-page>
342.
<exception-type>java.lang.Throwable</exception-type>
343.
<location>/mainError.jsp</location>
344.
</error-page>
345.
<error-page>
346.
<exception-type>java.lang.ClassCastException</exception-type>
347.
<location>/castError.jsp</location>
348.
</error-page>
If the web application associated with the fragment above throws a ClassCastException.
Which statement is true?

A) The deployment descriptor is invalid.
B) The container invokes mainError.jsp.
C) The container invokes castError.jsp.
D) Neither mainError.jsp nor castError.jsp is invoked.

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) Tag files can only be placed in /WEB-INF/tags, and NOT in any subdirectories of /WEB-INF/tags.
B) 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.
C) The sort.jsp page produces a translation error because a taglib directive must always have a uri attribute.
D) Tag files can only be accessed using a tagdir attribute.
E) 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.
F) The sort.jsp page translates successfully and invokes the tag defined by beta.tag.

4. For manageability purposes, you have been told to add a "count" instance variable to a critical JSP Document so that a JMX MBean can track how frequent this JSP is being invoked. Which JSP code snippet must you use to declare this instance variable in the JSP Document?

A) <%! int count = 0; %>
B) <jsp:declaration.instance> int count = 0; <jsp:declaration.instance>
C) <jsp:declaration> int count = 0; <jsp:declaration>
D) <jsp:scriptlet.declaration> int count = 0; <jsp:scriptlet.declaration>

5. You need to store a Java long primitive attribute, called customerOID, into the session scope. Which two code snippets allow you to insert this value into the session? (Choose two.)

A) long customerOID = 47L; session.setLongAttribute("customerOID", new Long(customerOID));
B) long customerOID = 47L; session.setAttribute("customerOID", new Long(customerOID));
C) long customerOID = 47L; session.setAttribute("customerOID", customerOID);
D) long customerOID = 47L; session.setNumericAttribute("customerOID", new Long(customerOID));
E) long customerOID = 47L; session.setNumericAttribute("customerOID", customerOID);
F) long customerOID = 47L; session.setLongAttribute("customerOID", customerOID);

Solutions: