Oracle Java Enterprise Edition 5 Web Component Developer Certified Professional : 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. You are writing a JSP that includes scriptlet code to declare a List variable and initializes that variable to an ArrayList object. Which two JSP code snippets can you use to import these list types? (Choose two.)

A) <%@ import types='java.util.List,java.util.ArrayList' %>
B) <%! import java.util.List; import java.util.ArrayList; %>
C) <%! import java.util.*; %>
D) <%@ import types='java.util.List' types='java.util.ArrayList' %>
E) <%@ page import='java.util.List,java.util.ArrayList' %>
F) <%@ page import='java.util.List'
import='java.util.ArrayList' %>

2. Which JSTL code snippet can be used to import content from another web resource?

A) <c:include page="foo.jsp"/>
B) Importing cannot be done in JSTL. A standard action must be used instead.
C) <c:import url="foo.jsp"/>
D) <c:import page="foo.jsp"/>
E) <c:include url="foo.jsp"/>

3. Given that a web application consists of two HttpServlet classes, ServletA and ServletB, and the ServletA.service method:
20.
String key = "com.example.data";
21.
session.setAttribute(key, "Hello");
22.
Object value = session.getAttribute(key);
23.
Assume session is an HttpSession, and is not referenced anywhere else in ServletA.
Which two changes, taken together, ensure that value is equal to "Hello" on line 23? (Choose two.)

A) enclose lines 21-22 in a synchronized block:
synchronized(this) {
session.setAttribute(key, "Hello");
value = session.getAttribute(key);
}
B) ensure that the ServletA.service method is synchronized
C) enclose lines 21-22 in a synchronized block:
synchronized(session) {
session.setAttribute(key, "Hello");
value = session.getAttribute(key);
}
D) ensure that ServletB synchronizes on the session object when setting session attributes
E) ensure that the ServletB.service method is synchronized

4. Given a portion of a valid Java EE web application's directory structure:
MyApp | |-- File1.html | |-- Directory1 | |-- File2.html | |-- META-INF |-- File3.html
You want to know whether File1.html, File2.html, and/or File3.html will be directly accessible by your web client's browsers.
Which statement is true?

A) Only File1.html and File2.html are directly accessible.
B) Only File2.html is directly accessible.
C) All three files are directly accessible.
D) Only File1.html and File3.html are directly accessible.
E) Only File1.html is directly accessible.
F) Only File3.html is directly accessible.
G) Only File2.html and File3.html are directly accessible.

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

Solutions: