单项选择题
A.The output "filterAdded = null" is written to the response stream.
B.The output "filterAdded = addedByFilter" is written to the response stream.
C.An exception is thrown at runtime within the service method of the Source servlet.
D.An exception is thrown at runtime within the service method of the Destination servlet.
多项选择题 Given： String value = getServletContext（）.getInitParameter（"foo"）； in an HttpServlet and a web applicationdeployment descriptor that contains： <context-param> <param-name>foo</param-name> <param-value>frodo</param-value> </context-param> Which two are true？（）
多项选择题 Forwhichthreeeventscanwebapplicationeventlistenersberegistered？（）
多项选择题 Your web application uses a simple architecture in which servlets handle requests and then forward to aJSP using a request dispatcher. You need to pass information calculated in the servlet to the JSP for view generation.This information must NOT be accessible to any other servlet，JSP or session in the webapp. Which two techniques can you use to accomplish this goal？（）
Given the web application deployment descriptor elements： 11.