Practice Test - Disaster Recovery

What is the command to restore the DTR from a backup tar (e.g dtr-metadata-backup.tar) ?

Which of the following are included in a UCP backup?

Which of the below configurations can tolerate 3 manager node failures?

You should have at least 3 managers in the swarm cluster to support manager node failures.

What is the command to promote a node to manager in docker swarm cluster?

The auto lock key is required when the cluster is restored, so it must be kept safe in an external password manager.

To take a backup of UCP, which docker image would you need to run with the backup command?

To create a backup of DTR, you don’t need to backup the DTR metadata, only backing up image content is enough.

What are the prerequisites for restoring swarm?

You must use the same IP as the node from which you made the backup.
You must restore the backup on the same Docker Engine version.
If auto-lock was enabled on the old Swarm, the unlock key is required to perform the restore.

Which of the following statements are true? Select all the answers that apply.

On every docker host, docker stores data about the object it manages under the /var/lib/docker directory.
On a swarm manager node, it stores data about the swarm cluster in the /var/lib/docker/swarm directory.
On every docker host, docker stores data about the object it manages under the /var/run/docker directory.
On a swarm manager node, it stores data about the swarm cluster in the /var/run/docker/swarm directory.

What is the command to forcefully create a cluster from its current state?

Practice Test – Disaster Recovery