Docker Certified Associate (DCA) - DCA 模擬練習

Are these conditions sufficient for Kubernetes to dynamically provision a persistentVolume, assuming there are no limitations on the amount and type of available external storage?
Solution: A volume is defined in a pod specification with the key persistentVolume: default.

Will this action upgrade Docker Engine CE to Docker Engine EE?
Solution.Run docker engine activate.

Two development teams in your organization use Kubernetes and want to deploy their applications while ensuring that Kubernetes-specific resources, such as secrets, are grouped together for each application.
Is this a way to accomplish this?
Solution: Add all the resources to the default namespace.

Does this describe the role of Control Groups (cgroups) when used with a Docker container?
Solution: isolation between resources used by containers

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

Is this a supported user authentication method for Universal Control Plane?
Solution.LDAP

The Kubernetes yaml shown below describes a clusterIP service.

Is this a correct statement about how this service routes requests?
Solution: Traffic sent to the IP of this service on port 80 will be routed to port 8080 in a random pod with the label app:
nginx.

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

One of several containers in a pod is marked as unhealthy after failing its livenessProbe many times. Is this the action taken by the orchestrator to fix the unhealthy container?
Solution: The unhealthy container is restarted.

The Kubernetes yaml shown below describes a networkPolicy.

Will the networkPolicy BLOCK this trafftc?
Solution. a request issued from a pod bearing only the tier: frontend label, to a pod bearing the tier: backend label

Will this command ensure that overlay traffic between service tasks is encrypted?
Solution:docker network create -d overlay --secure

Which networking drivers allow you to enable multi-host network connectivity between containers?

Will this command display a list of volumes for a specific container?
Solution: docker volume logs nginx --containers'

Your organization has a centralized logging solution, such as Sptunk.
Will this configure a Docker container to export container logs to the logging solution?
Solution.docker system events- -filter splunk