DCA試験無料問題集「Docker Certified Associate (DCA) 認定」

Can this set of commands identify the published port(s) for a container?
Solution: `docker network inspect', `docker port'

Is this a Linux kernel namespace that is disabled by default and must be enabled at Docker engine runtime to be used?
Solution: user

An application image runs in multiple environments, with each environment using different certificates and ports.
Is this a way to provision configuration to containers at runtime?
Solution: Create a Dockerfile for each environment, specifying ports and ENV variables for certificates.

Is this an advantage of multi-stage builds?
Solution. better logical separation of Dockerfile instructions for increased readability

Is this the purpose of Docker Content Trust?
Solution: Verify and encrypt Docker registry TLS.

In Kubernetes, to mount external storage to a filesystem path in a container within a pod, you would use a volume in the pod specification. This volume is populated with a persistentVolumeClaim that is bound to an existing persistentVolume. The persistentVolume is defined and managed by the storageClass which provides dynamic or static provisioning of the volume and determines what type of storage will be provided1.
*Dynamic Volume Provisioning | Kubernetes
Is this a supported user authentication method for Universal Control Plane?
Solution: Docker ID

In the context of a swarm mode cluster, does this describe a node?
Solution: an instance of the Docker engine participating in the swarm

You add a new user to the engineering organization in DTR.
Will this action grant them read/write access to the engineering/api repository?
Solution. Mirror the engineering/api repository to one of the user's own private repositories.

Seven managers are in a swarm cluster.
Is this how should they be distributed across three datacenters or availability zones?
Solution: 5-1-1