Which of the following choices identifies a database component that will be used for multiplexing control files?（）

单项选择题Flushingdirtybuffersoutofthebuffercacheisinfluencedtothegreatestextentbywhichofthefollowingprocess?（）

A.ARCH 
B.SMON 
C.LGWR
D.SERVER

单项选择题WhichcomponentoftheSGAstoresparsedSQLstatementsisusedforprocesssharing?（）

A.Buffer cache 
B.Redo log buffer 
C.Private SQL area 
D.Library cache 
E.Row cache 

单项选择题TheuseristryingtoexecuteaSELECTstatement.Whichofthefollowingbackgroundprocesseswillobtaindatafromadiskfortheuser?（）

A.DISPATCHER 
B.USER 
C.SERVER 
D.LGWR 
E. DBW0