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

1. DRAG DROP
Click the Task button.
Given a request from mybox.example.com, with an IP address of 10.0.1.11 on port 33086, place the appropriate ServletRequest methods onto their corresponding return values.

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

3. Given tutorial.jsp:
2.<h1>EL Tutorial</h1>
3.<h2>Example 1</h2>
4.<p>
5.Dear ${my:nickname(user)}
6.</p>
Which, when added to the web application deployment descriptor, ensures that line 5 is included verbatim in the JSP output?

A) <jsp-config> <jsp-property-group> <url-pattern>*.jsp</url-pattern> <el-ignored>true</el-ignored> </jsp-property-group> </jsp-config>
B) <jsp-config> <url-pattern>*.jsp</url-pattern> <isELIgnored>true</isELIgnored> </jsp-config>
C) <jsp-config> <url-pattern>*.jsp</url-pattern> <el-ignored>true</el-ignored> </jsp-config>
D) <jsp-config> <jsp-property-group> <url-pattern>*.jsp</url-pattern> <isElIgnored>true</isElIgnored> </jsp-property-group> </jsp-config>
E) <jsp-config> <jsp-property-group> <el-ignored>*.jsp</el-ignored> </jsp-property-group> </jsp-config>

4. You are creating a new JSP page and you need to execute some code that acts when the page is first executed, but only once. Which three are possible mechanisms for performing this initialization code? (Choose three.)

A) In a JSP declaration, which includes an initializer block.
B) In the init method.
C) In the jspInit method.
D) In a JSP declaration, which includes a static initializer block.
E) In the constructor of the JSP's Java code.

5. You need to create a servlet filter that stores all request headers to a database for all requests to the web application's home page "/index.jsp". Which HttpServletRequest method allows you to retrieve all of the request headers?

A) java.util.Iterator getRequestHeaders()
B) java.util.Enumeration getRequestHeaders()
C) java.util.Iterator getHeaderNames()
D) java.util.Enumeration getHeaderNames()
E) String[] getRequestHeaders()
F) String[] getHeaderNames()

Solutions: