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>
单项选择题 Whichsecuritymechanismisemployedonlyontheserver-sidetolimitaccesstoresourcesorcomponents？（）
单项选择题 Whenusingaform-basedauthentication，whichactionmustbeusedintheloginform？（）
多项选择题 Whichtwopiecesofinformationareneededwhendeclaringthewebresourcecollectioninthedeploymentdescriptor？（）
