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SUN 310-083 Exam Syllabus Topics:

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

1. Which interface must a class implement so that instances of the class are notified after any object is added to a session?

A) javax.servlet.http.HttpSessionListener
B) javax.servlet.http.HttpSessionBindingListener
C) javax.servlet.http.HttpSessionAttributeListener
D) javax.servlet.http.HttpSessionValueListener

2. Your web application uses a simple architecture in which servlets handle requests and then forward to a JSP using a request dispatcher. You need to pass information calculated by the servlet to the JSP; furthermore, that JSP uses a custom tag and must also process this information. This information must NOT be accessible to any other servlet, JSP or session in the webapp. How can you accomplish this goal?

A) Add an attribute to the context object before using the request dispatcher.
B) This CANNOT be done as the tag handler has no means to extract this data.
C) Add an attribute to the request object before using the request dispatcher.
D) Store the data in a public instance variable in the servlet.

3. What is true about Java EE authentication mechanisms?

A) If your deployment descriptor correctly declares an authentication type of
CLIENT_CERT, your users must have a certificate from an official source before they can use your application.
B) To use Java EE FORM authentication, you must declare two HTML files in your deployment descriptor, and you must use a predefined action in the HTML file that handles your user's login.
C) If you want your web application to support the widest possible array of browsers, and you want to perform authentication, the best choice of Java EE authentication mechanisms is DIGEST.
D) If your deployment descriptor correctly declares an authentication type of BASIC, the container automatically requests a user name and password whenever a user starts a new session.

4. A developer is designing a multi-tier web application and discovers a need to hide the details of establishing and maintaining remote communications from the client. In addition, because the business and resource tiers are distributed, the application needs to minimize the inter-tier network traffic related to servicing client requests. Which design patterns, working together, address these issues?

A) Business Delegate and Intercepting Filter
B) Business Delegate and Transfer Object
C) Front Controller and Transfer Object
D) Model-View-Controller and Intercepting Filter
E) Front Controller and Service Locator

5. Which two are true regarding a web application class loader? (Choose two.)

A) Resources in the WAR class directory or in any of the JAR files within the library directory may be accessed using the J2SE semantics of getResource.
B) Resources in the WAR class directory or in any of the JAR files within the library directory CANNOT be accessed using the J2SE semantics of getResource.
C) A web application running in a J2EE product may override classes in the javax.* namespace.
D) A web application class loader may NOT override any classes in the java.* and javax.* namespaces.
E) A web application may override the web container's implementation classes.

Solutions: