Docker DCA Exam Dumps

Docker DCA Sample Question Answers

Question # 1

Which one of the following commands will show a list of volumes for a specific container? 

A. 'docker container logs nginx --volumes'
B. 'docker container inspect nginx'
C. 'docker volume inspect nginx'
D. 'docker volume logs nginx --containers'

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Question # 2

Does this describe the role of Control Groups (cgroups) when used with a Docker container? Solution: accounting and limiting of resources

A. Yes
B. No

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Question # 3

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 default storageClass is specified, and subsequently a persistentVolumeClaim is created. 

A. Yes
B. No

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Question # 4

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 describe deployment api 

A. Yes
B. NO

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Question # 5

Which of the following is true about overlay networks?

A. Overlay networks are created only on the manager node that you created the overlay networking on
B. Overlay networks are created on all cluster nodes when you create the overlay network.
C. Overlay networks are first created on the manager nodes. Then they are created on the worker nodes once a task is scheduled on the specific worker node
D. Overlay networks are only created on the manager nodes.

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Question # 6

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

A. Yes
B. No

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Question # 7

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 default provisioner is specified, and subsequently a persistentVolumeClaim is created.

A. Yes
B. No

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Question # 8

You want to provide a configuration file to a container at runtime. Does this set of Kubernetes tools and steps accomplish this? Solution: Turn the configuration file into a configMap object, use it to populate a volume associated with the pod, and mount that file from the volume to the appropriate container and path

A. Yes
B. No

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Question # 9

Which of the following commands is used to display system-wide Docker configuration on a host? 

A. docker info
B. docker status
C. docker inspect
D. docker system

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Question # 10

What is the docker command to setup a swarm? 

A. docker swarm init
B. docker swarm create
C. docker init swarm
D. docker create swarm

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Question # 11

Is this statement correct? Solution: A Dockerfile provides instructions for building a Docker image

A. Yes
B. No

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Question # 12

The following health check exists in a Dockerfile:'HEALTCHECKCMD curl --fail http://localhost/health || exit 1'Which of the following describes its purpose?

A. Defines the action taken when container health fails, which in this case will kill the container with exit status 1 B. Defines the health check endpoint on the localhost interface for external monitoring tools to monitor the health of the docker engine
B. Defines the health check endpoint on the local host interface for containers to monitor the health of the docker engine.
C. Defines the health check for the containerized application so that the application health can be monitored by the Docker engine

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Question # 13

Will this action upgrade Docker Engine CE to Docker Engine EE? Solution: Uninstall 'docker-ce' package before installing 'docker-ee' package.

A. Yes
B. No

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Question # 14

An application image runs in multiple environments, and each environment uses different certificates and ports, what is the best practice to deploy the containers?

A. Create a Dockerfile for each environment, specifying ports and ENV variables for certificates.
B. Create a Dockerfile for each environment, specifying ports and Docker secrets for certificates.
C. Create images that contain the specific configuration for every environment.
D. Create a config file for each environment.

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Question # 15

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 ps http' 

A. Yes
B. No

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Question # 16

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 inspect http'

A. Yes
B. No

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Question # 17

You have deployed a service to swarm. Which command uses the Docker CLI to set the number of tasks of the services to 5? (choose 2) 

A. 'docker service update --replicas=5 ' 
B. 'docker replica update =5' 
C. 'docker update service =5' 
D. 'docker service replicas =5' 
E. 'docker service scale = 5'' 

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Question # 18

Will a DTR security scan detect this? Solution: licenses for known third party binary components

A. Yes
B. No

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