publicclassCreditCard{privateStringcardlD；privateIntegerlimit；publicStringownerName；publicvoidsetCardlnformation（StringcardlD，StringownerName，28.Integerlimit）{this.cardlD=cardlD；this.ownerName=ownerName；this.limit=limit；}}Whichistrue？（）

A . 正确 B . 错误

A .  The switch privilege is granted to the PROG_ROLE role. B .  The users granted the role PROG_ROLE will be able to switch to the DEVELOPERS group. C .  The users cannot grant the switch privilege to other users. D .  The above code will not be executed successfully because the GRANT_SWITCH_CONSUMER_GROUP procedure is an invalid procedure in Oracle10g.

A .  The switch privilege will be granted to the user， Scott， for changing the consumer group to GRP1. B .  The switch privilege will be granted to the user， Scott， for changing the consumer group from GRP1 to any other group. C .  The code will not execute successfully because there is no GRANT_SWITCH_CONSUMER_GROUP procedure in the DBMS_RESOURCE_MANAGER_PRIVS package. D . The code will execute successfully but no privilege will be granted to the user， Scott.

A . HMAC-SHA B . HMAC-MD5 C . CBC-DES D . AES E . 3DES

是 否