多项选择题

Which the two are true regarding a web application class loader？（）

A. A web application may override the web container’s implementation classes
B. A web application running in a J2EE product may override classes in the javax.* namespace
C. A web application class loader may NOT override any classes in the java.* and javax.* namespace
D. Resources in the WAR class directory or in any of the JAR files within the library directory may be accessed using the J2SE semantics of getResource
E. Resources in the WAR class directory or in any of the JAR files within the library directory cannot be accessed using the J2SE semantics of getResource

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热门试题

单项选择题Within the web application deployment descriptor， which defines a valid JNDI environment entry（）

A.A
B.B
C.C
D.D

单项选择题Whichpath，relativetoawebapplication’sroot，identifiesthewebapplication’sdeploymentdescriptor？（）

A. /conf/web.xml
B. /WEB-INF/web.xml
C. /conf/server.xml
D. /META-INF/web.xml
E. /WEB-INF/rules.xml
F. /META-INF/server. Xml

多项选择题Which two are true（）

A. Line 13 is not valid for a servlet declaration
B. Line 14 is not valid for a servlet declaration
C. One instance of the servlet will be loaded at startup
D. Ten instance of the servlet will be loaded at start up
E. the servlet will be referenced by the name catalog in mappings

单项选择题WhenusingFormBasedAuthentication，whichpairoffieldsmustbeusedintheloginform？（）

A. j_user and j_id
B. j_id and j_password
C. j_users and j_password
D. j_user and j_password
E. j_login and j_password
F. j_username and j_password

单项选择题What else must the developer do to ensure that the intended security goal is achieved（）？

A. Create a user called vip in the security realm
B. Define a group within the security realm and call it vip
C. Define a security-role named vip in the development descriptor
D. Declare a security-role-ref for vip in the deployment descriptor