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

Will this configuration achieve fault tolerance for managers in a swarm?
Solution: at least seven nodes in total

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: Provision a Docker config object for each environment.

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.

You want to create a container that is reachable from its host's network.
Does this action accomplish this?
Solution: Use network attach to access the container on the bridge network.

In Docker Trusted Registry, is this how a user can prevent an image, such as 'nginx:latest', from being overwritten by another user with push access to the repository?
Solution: Keep a backup copy of the image on another repository.

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

Will this Linux kernel facility limit a Docker container's access to host resources, such as CPU or memory?
Solution.capabilities

You created a new service named 'http' and discover it is not registering as healthy. Will this command enable you to view the list of historical tasks for this service?
Solution: 'docker service inspect http'

Does this describe the role of Control Groups (cgroups) when used with a Docker container?
Solution: role-based access control to clustered resources

Will This command list all nodes in a swarm cluster from the command line?
Solution. 'docker swarm nodes'

You are troubleshooting a Kubernetes deployment called api, and want to see the events table for this object. Does this command display it?
Solution: kubectl events deployment api

Is this a supported user authentication method for Universal Control Plane?
Solution: PAM

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

Does this command create a swarm service that only listens on port 53 using the UDP protocol?
Solution: 'docker service create --name dns-cache -p 53:53/udp dns-cache'