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ViewtheExhibitandexaminetheoutput.YouexecutethefollowingRMANcommandtoperformthebackupoperation：RMAN>RUN{ALLOCATECHANNELc1DEVICETYPEdiskMAXOPENFILES8；BACKUPDATABASEFILESPERSET4；}Whatisthemultiplexinglevelintheprecedingbackupprocess？（）
A.4
B.8
C.7
D.0

A.YouexecutethefollowingRMANcommandtoperformthebackupoperation：RMAN>RUN{ALLOCATECHANNELc1DEVICETYPEdiskMAXOPENFILES8；BACKUPDATABASEFILESPERSET4；}Whatisthemultiplexinglevelintheprecedingbackupprocess？（）
A.4
B.8
C.7
D.0
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