单项选择题
A.Simply rename the legacy WAR file as a JAR file and place it in your webapp’s library directory.
B.Unpack the legacy WAR file， move the TLD file to the META-INF directory， repackage the whole thingas a JAR file， and place that JAR file in your webapp’s library directory.
C.Unpack the legacy WAR file， move the TLD file to the META-INF directory， move the class files to thetop-level directory， repackage the whole thing as a JAR file， and place that JAR file in your webapp’slibrary directory.
D.Unpack the legacy WAR file， move the TLD file to the META-INF directory， move the class files to thetop-level directory， repackage the WAR， and place that WAR file in your webapp’s WEB-INF directory.
多项选择题 WhichthreewebapplicationdeploymentdescriptorelementsallowwebcomponentstogainreferencestoresourcesorEJBcomponents？（）
多项选择题 WhichthreearevalidURLmappingstoaservletinawebdeploymentdescriptor？（）
多项选择题 Given the security constraint in a DD： 101.<security-constraint> 102.<web-resource-collection> 103.<web-resource-name>Foo</web-resource-name> 104.<url-pattern>/Bar/Baz/*</url-pattern> 105.<http-method>POST</http-method> 106.</web-resource-collection> 107.<auth-constraint> 108.<role-name>DEVELOPER</role-name> 109.</auth-constraint> 110.</security-constraint> And given that "MANAGER" is a valid role-name，which four are true for this security constraint？（）