单项选择题

Which the basic authentication type is optional for a J2EE 1.4 compliant web container？（）

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

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单项选择题

When adding a element to a web application deployment descriptor， the inclusion of which sub-element requires the definition of an error page（）？

A. <realm-name>
B. <auth-metod>
C. <auth-constraint>
D. <form-login-config>
E. <user-data-constaint>

单项选择题

Which security mechanism can be directed through the element in a web deployment descriptor（）？

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

多项选择题

A Company.com developer has created a web application that includes a servlet for each use case in the application. These servlets have become rather difficult to maintain because the request processing methods have become very large. There is also common processing code in many servlets because these use cases are very similar.
Which two design patterns can be used together to refactor and simplify this web application？（）

A. Proxy
B. View Helper
C. Front Controller
D. Session Façade
E. Business Delegate
F. Model-View-Controller