单项选择题

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>

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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.

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