YouwanttheuserAPP_DBAtoadministertheOracledatabasefromaremotemachine.APP_DBAisgrantedtheSYSDBAprivilegetoperformadministrativetasksonthedatabase.WhichfileisusedbytheOracledatabaseservertoauthenticateAPP_DBA？（）
A.controlfile
B.passwordfile
C.listenercontrollerfile
D.controlfileandpasswordfile
正确答案：参考B
