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单选题
A developer is designing a web application that must support multiple interfaces， including： • an XML web service for B2B • HTML for web-based clients • WML for wireless customers Which design pattern provides a solution for this problem？（ ）
A
Session Façade
B
Business Delegate
C
Data Access Object
D
Model-View-Controller
E
Chain of Responsibility
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Remote ProxyB
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单选题Which statement is true about web container session management？（）A
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Business Delegate and Service LocatorC
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Intercepting Filter and Transfer Object
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单选题Squeaky Beans Inc. hired an outside consultant to develop their web application. To finish the job quickly，the consultant created several dozen JSP pages that directly communicate with the database. The Squeakybusiness team has since purchased a set of business objects to model their system， and the Squeaky developer charged with maintaining the web application must now refactor all the JSPs to work with the newsystem. Which pattern can the developer use to solve this problem？（）A
Transfer ObjectB
Service LocatorC
Intercepting FilterD
Business Delegate
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CommandB
Transfer ObjectC
Service LocatorD
Session FacadeE
Business Delegate
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多选题A developer wants a web application to be notified when the application is about to be shut down. Which two actions are necessary to accomplish this goal？（）AInclude a listener directive in a JSP pageBconfigure a listener in the TLD file using the elementCInclude a element in the web application deployment descriptorDconfigure a listener in the application deployment descriptor， using the elementEInclude a class implementing ServletContextListener as part of the web application deploymen
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