Examine the RMAN command:
A.
It creates compressed backup sets.
B.
It uses asynchronous I/O for the backup.
C.
It uses parallelization for the backup set.
D.
It uses multisection backup.
Explanation:
SBT stands for Serial Backup Tape.
Configuring Parallel Channels for Disk and SBT Devices
The number of channels available for a device type when you run a command determines whether RMAN reads or writes in parallel. As a rule, the number of channels used in executing a command should match the number of devices accessed.
For tape backups, allocate one channel for each tape drive.
References: Oracle Database, Backup and Recovery User’s Guide, 12 Release 2 (January 2017), page 5-6