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

1. You are building a web application that will be used throughout the European Union; therefore, it has significant internationalization requirements. You have been tasked to create a custom tag that generates a message using the java.text.MessageFormat class. The tag will take the resourceKey attribute and a variable number of argument attributes with the format, arg<N>. Here is an example use of this tag and its output:
<t:message resourceKey='diskFileMsg' arg0='MyDisk' arg1='1247' />
generates:
The disk "MyDisk" contains 1247 file(s).
Which Simple tag class definition accomplishes this goal of handling a variable number of tag attributes?

A) The Simple tag model does NOT support a variable number of attributes.
B) public class MessageTag extends SimpleTagSupport
implements VariableAttributes {
private Map attributes = new HashMap();
public void putAttribute(String name, Object value) {
this.attributes.put(name, value);
}
// more tag handler methods
}
C) public class MessageTag extends SimpleTagSupport
implements VariableAttributes {
private Map attributes = new HashMap();
public void setVariableAttribute(String uri,
String name, Object value) {
this.attributes.put(name, value);
}
// more tag handler methods
}
D) public class MessageTag extends SimpleTagSupport
implements DynamicAttributes {
private Map attributes = new HashMap();
public void setDynamicAttribute(String uri, String name,
Object value) {
this.attributes.put(name, value);
}
// more tag handler methods
}
E) public class MessageTag extends SimpleTagSupport
implements DynamicAttributes {
private Map attributes = new HashMap();
public void putAttribute(String name, Object value) {
this.attributes.put(name, value);
}
// more tag handler methods
}

2. Which two security mechanisms can be directed through a sub-element of the <user-dataconstraint> element in a web application deployment descriptor? (Choose two.)

A) authentication
B) data integrity
C) confidentiality
D) authorization

3. Which two directives are applicable only to tag files? (Choose two.)

A) taglib
B) tag
C) include
D) variable
E) page

4. If you want to use the Java EE platform's built-in type of authentication that uses a custom HTML page for authentication, which two statements are true? (Choose two.)

A) You must have a tag in your deployment descriptor that allows you to point to both a login HTML page and an HTML page for handling any login errors.
B) In the HTML related to authentication for this application, you must use predefined variable names for the variables that store the user and password values.
C) Your deployment descriptor will need to contain this tag: <auth-method>CUSTOM</auth-method>.
D) The related custom HTML login page must be named loginPage.html.
E) When you use this type of authentication, SSL is turned on automatically.

5. A web component accesses a local EJB session bean with a component interface of com.example.Account with a home interface of com.example.AccountHome and a JNDI reference of ejb/Account. Which makes the local EJB component accessible to the web components in the web application deployment descriptor?

A) <resource-ref>
<ejb-ref-name>ejb/Account</ejb-ref-name>
<ejb-ref-type>Session</ejb-ref-type>
<local-home>com.example.AccountHome</local-home>
<local>com.example.Account</local> </resource-ref>
B) <ejb-local-ref>
<ejb-ref-name>ejb/Account</ejb-ref-name>
<ejb-ref-type>Session</ejb-ref-type>
<local-home>com.example.AccountHome</local-home>
<local>com.example.Account</local>
</ejb-local-ref>
C) <ejb-remote-ref>
<ejb-ref-name>ejb/Account</ejb-ref-name>
<ejb-ref-type>Session</ejb-ref-type>
<local-home>com.example.AccountHome</local-home>
<local>com.example.Account</local>
</ejb-remote-ref>
D) <env-ref>
<ejb-ref-name>ejb/Account</ejb-ref-name>
<ejb-ref-type>Session</ejb-ref-type>
<local-home>com.example.AccountHome</local-home>
<local>com.example.Account</local>
</env-ref>

Solutions: