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SUN 310-083 Exam Syllabus Topics:

SUN Sun Certified Web Component Developer for J2EE 5 Sample Questions:

1. Which basic authentication type is optional for a J2EE 1.4 compliant web container?

A) HTTPS Client Authentication
B) Form Based Authentication
C) HTTP Digest Authentication
D) HTTP Basic Authentication

2. You have been contracted to create a web site for a free dating service. One feature is the ability for one client to send a message to another client, which is displayed in the latter client's private page. Your contract explicitly states that security is a high priority.
Therefore, you need to prevent cross-site hacking in which one user inserts JavaScript code that is then rendered and invoked when another user views that content. Which two
JSTL code snippets will prevent cross-site hacking in the scenario above? (Choose two.)

A) <c:out value='${message}' escapeXml='true' />
B) <c:out value='${message}' />
C) <c:out>${message}</c:out>
D) <c:out value='${message}' eliminateXml='true' />
E) <c:out eliminateXml='true'>${message}</c:out>

3. Which statement is true if the doStartTag method returns EVAL_BODY_BUFFERED ?

A) It is never legal to return EVAL_BODY_BUFFERED from doStartTag.
B) The tag handler must implement BodyTag.
C) The doAfterBody method is NOT called.
D) The setBodyContent method is called once.

4. Your web application requires the adding and deleting of many session attributes during a complex use case. A bug report has come in that indicates that an important session attribute is being deleted too soon and a NullPointerException is being thrown several interactions after the fact. You have decided to create a session event listener that will log when attributes are being deleted so you can track down when the attribute is erroneously being deleted.
Which listener class will accomplish this debugging goal?

A) Create an HttpSessionAttributeListener class and implement the attributeRemoved method and log the attribute name using the getName method on the event object.
B) Create an SessionAttributeListener class and implement the attributeDeleted method and log the attribute name using the getAttributeName method on the event object.
C) Create an SessionAttributeListener class and implement the attributeRemoved method and log the attribute name using the getAttributeName method on the event object.
D) Create an HttpSessionAttributeListener class and implement the attributeDeleted method and log the attribute name using the getName method on the event object.

5. Which implicit object is used in a JSP page to retrieve values associated with <context- param> entries in the deployment descriptor?

A) application
B) session
C) request
D) config

Solutions: