Which modifier is used to change listener parameters in the Listener Control utility environment？（）

单项选择题WhichphrasebestdescribesRMANmultiplexedbackupsets？（）

A.Stripes a single backup set across multiple channels.
B.Identical copies of backup pieces within a backup set.
C.Multiple backup sets with multiple channels configured.
D.Simultaneous reads from multiple files and writes into the same backup piece.

多项选择题WhichthreefeaturesareprovidedbyOracleNetServices？（）

A.Data encryption.
B.User authentication.
C.Transparent data conversion
D.Configuration and administration mechanisms.
E.Support for multiple network transport protocols.

单项选择题Whenyouareperformingmediarecover，andanarchivedlogislostorcorrupt，whichtypeofrecovermustyouperform？（）

A.Until SCN
B.Until time
C.Until cancel
D.Recover using backup control file.

多项选择题Whichtworolesorprivilegesmustyouhavetoexporttablesownedbyanotheruser？（）

A.CREATE USER
B.CREATE SESSION
C.CREATE ANY TABLE
D.IMP_FULL_DATABASE
E.EXP_FULL_DATABASE

多项选择题Inwhichthreecasesdoesacheckpointoccur？（）

A.Every three minutes.
B.When a log switch occurs.
C.When forces by an administrator.
D.When a tablespace is taken offline normal.
E.When the redo buffer is one-third full.