View the Exhibit and examine the output. You execute the following RMAN command to perform the backup operation: RMAN> RUN { ALLOCATE CHANNEL c1 DEVICE TYPE disk MAXOPENFILES 8; BACKUP DATABASE…

Multiplexing level is the number of input datafiles written simultaneously into a single backup piece, determined by the lesser of FILESPERSET and MAXOPENFILES. Here FILESPERSET is 4 and MAXOPENFILES is 8, so the effective multiplexing level is min(4, 8) = 4.

MAXOPENFILES 8 sets an upper ceiling on simultaneously open input files per channel but does not define the multiplexing level when FILESPERSET 4 is the more restrictive constraint.

The value 7 is not derivable from any parameter in this command; the multiplexing level is strictly the minimum of FILESPERSET and MAXOPENFILES, yielding 4.

A multiplexing level of 0 would indicate no multiplexing, which contradicts the explicit FILESPERSET 4 parameter that directs RMAN to read 4 files concurrently into each backup set.