Which of these methods would you use to achieve this?

You are managing an Oracle Database 11g instance with ASM storage. You lost an ASM disk
group DATA. You have RMAN backup of data as well as ASM metadata backup. You want to recreate the missing disk group by using the ASMCMD md_restore command.
Which of these methods would you use to achieve this? (Choose all that apply.)

A.
Restore the disk group with the exact configuration as the backed-up disk group, using the
same disk group name, same set of disks, failure group configurations, and data on the disk
group.

B.
Restore the disk group with the exact configuration as the backed-up disk group, using the
same disk group name, same set of disks, and failure group configurations.

C.
Restore the disk group with changed disk group specification, failure group specification, disk
group name, and other disk attributes.

D.
Restore metadata in an existing disk group by passing the existing disk group name as an input
parameter.

Explanation:
Purpose
The md_restore command restores disk groups from a metadata backup file.
Syntax and Description

md_restore backup_file [–silent]
[–full|–nodg|–newdg -o ‘old_diskgroup:new_diskgroup [,…]’]
[-S sql_script_file] [-G ‘diskgroup [,diskgroup…]’]
backup_file
Reads the metadata information from backup_file.
–silent
Ignore errors. Typically, if md_restore encounters an error, it stops. Specifying this flag ignores
any errors.
–full
Specifies to create a disk group and restore metadata.
–nodg
Specifies to restore metadata only.
–newdg -o old_diskgroup:new_diskgroup]
Specifies to create a disk group with a different name when restoring metadata. The -o option is
required with
–newdg.
-S sql_script_file
Write SQL commands to the specified SQL script file instead of executing the commands.
-G diskgroup
Select the disk groups to be restored. If no disk groups are defined, then all disk groups are
restored.