mysql8.0英文OCP考试第161-169题

Q161.Examine this command, which executes successfully:

cluster . addInstance ( '@:' ,{recoveryMethod: 'clone' 1})

Which three statements are true? (Choose three.)

A)The account used to perform this recovery needs the BACKUP_ ADMIN privilege.

B)A target instance must exist, then it will be provisioned with data from an instance already in the cluster and joined to the cluster,

C)InnoDB tablespaces outside the datadir are able to be cloned.

D)It ls always slower than  {recoveryMethod:'incremental' }.

E)A new instance is installed, initialized, and provisioned with data from an instance already in the cluster and joined to the cluster.

F)InnoDB redo logs must not rotate for the duration of the execution; otherwise, the recovery will fail.

Answer:ABC

Q162.Examine this set of messages and responses:

host3:3377 ssl JS > dba. rebootClusterFromCompleteOutage ()

Reconfiguring the default cluster from completeoutage...

The instance'host1 :3377'' was part of the cluster configuration.

Would you like to rejoin it to the cluster? [y/N] : y

The instance 'host2 :3377'was part of the cluster configuration.

Would you like to rejoin it to the cluster? [y/N] : y

Dba . rebootClusterFromCompleteOutage :The active session instance isn't the most updated in comparison with the ONLINE instances of the Cluster' s metadata. Please use the most up to date instance: 'host1 :3377'.

(RuntimeError )

Which statement is true?

A)The instance deployed on host3 must be rebuilt with a backup from the primary instance.

B)The clu