In your database, online redo log files are multiplexed and one of the members in a group is
lost due to media failure?
How would you recover the lost redo log member?
import the database from the last export
restore all the members in the group from the last backup
drop the lost member from the database and then add a new member to the group
restore all the database files from the backup and then perform a complete recovery
restore all the database files from the backup and then perform an incomplete recovery