A.B.C.D.

Which element of a web application deployment descriptor  element is required？（）

A.<realm-name>
B.<auth-method>
C.<security-role>
D.<transport-guarantee>
E.<web-resource-collection>

单项选择题Given a Filter class definition with this method： 21.public void doFilter（ServletRequest request， 22.ServletResponse response， 23.FilterChain chain） 24.throws ServletException， IOException { 25.  insert code here 26.} Which should you insert at line 25 to properly invoke the next filter in the chain， or the target servlet if thereare no more filters？（）

A.chain.forward（request， response）；
B.chain.doFilter（request， response）；
C.request.forward（request， response）；
D.request.doFilter（request， response）；

单项选择题You need to create a JSP that generates some JavaScript code to populate an array of strings used on the client-side. Which JSP code snippet will create this array？（）

A.
B.
C.
D.

单项选择题Click the Exhibit button. The attribute  name  has a value of  Foo， What is the result if this tag handler’s tag is invoked？（）

A.Foo
B.done
C.Foodone
D.An exception is thrown at runtime
E.No output is produced from this code

问答题Click the ’Select and Place’ button. Place the events in the order they occur.

问答题Click the ’Select and Place’ button. Place the events in the order they occur.