YouaredesigningastrategytoprovideInternetaccesstoallusers.Whatshouldyoudo？（）

You are connected to a pluggable database (PDB) as a common user with DBA privileges.The STATISTICS_LEVEL parameter is PDB_MODIFIABLE. You execute the following:SQL ＞ ALTER SYSTEM SET STATISTICS_LEVEL = ALL SID = ‘*’ SCOPE = SPFILE;Which is true about the result of this command？（） A. The STATISTICS_LEVEL parameter is set to all whenever this PDB is re-opened. B. The STATISTICS_LEVEL parameter is set to ALL whenever any PDB is reopened. C. The STATISTICS_LEVEL parameter is set to all whenever the multitenant container database (CDB) is restarted. D. Nothing happens; because there is no SPFILE for each PDB, the statement is ignored.

A．矿井主要通风设备的更新改造 B．矿井瓦斯监测系统与抽放系统的完善和改造 C．矿井防灭火的完善和改造 D．矿井供配电系统安全防护设备与设施的完善和改造 E．安全教育培训支出

A．CreateaGPOthatislinkedtothedomainandconfiguresecurityfilteringfortheGPO. B．CreateaGPOthatislinkedtothePublicOUandconfiguresecurityfilteringfortheGPO. C．CreateaGPOthatislinkedtothePublicOUandenableloopbackprocessingintheGPO. D．CreateaGPOthatislinkedtothedomainandenableblockinheritanceonthePublicOU.

是 否

是 否