Latest DCA Pass Guaranteed Exam Dumps Certification Sample Questions [Q13-Q28]

NEW QUESTION 13
Will this command display a list of volumes for a specific container?
Solution: ‘docker container inspect nginx’

Yes

NEW QUESTION 14
A company’s security policy specifies that development and production containers must run on separate nodes in a given Swarm cluster.
Can this be used to schedule containers to meet the security policy requirements?
Solution: node taints

Yes

NEW QUESTION 15
What is used by the kernel to Isolate resources when running Docker containers?

Namespaces

Overlay networks

Volumes

Control groups (also know as cgroups)

NEW QUESTION 16
When using the Docker client to push an image to a registry, what environment variable is used to instruct the client to perform signing of the image?

DOCKER_CONTENT_TRUST=1

DOCKER_IMAGE_SIGN=1

DOCKER_PUSH_SIGN=1

NOTARY_ENABLE=1
Correct

NEW QUESTION 17
What behavior is expected when a service is created with the following command:
‘docker service create –publish 8000:80 nginx’

All nodes in the cluster will listen on port 8080 and forward to port 80 in the container.

Only a single node in the cluster will listen on port 8080 and forward to port 80 in the
container.

All nodes in the cluster will listen on port 80 and forward to port 8080 in the container.

Only a single node in the cluster will listen on port 80 and forward to port 8080 in the container.

NEW QUESTION 18
Will this command ensure that overlay traffic between service tasks is encrypted?
Solution: docker network create -d overlay –secure

Yes

NEW QUESTION 19
The following health check exists in a Dockerfile:
‘HEALTCHECK CMD curl –fail http://localhost/health || exit 1’
Which of the following describes its purpose?

Defines the action taken when container health fails, which in this case will kill the container with exit status 1

Defines the health check endpoint on the localhost interface for external monitoring tools to monitor the health of the docker engine.

Defines the health check endpoint on the local host interface for containers to monitor the health of the docker engine.

Defines the health check for the containerized application so that the application health can be monitored by the Docker engine

NEW QUESTION 20
From a DevOps process standpoint, it is best practice to keep changes to an application in version control. Which of the following will allow changes to a docker Image to be stored in a version control system?

docker commit

docker save

A docker-compose.yml file

A dockerfile

NEW QUESTION 21
Seven managers are in a swarm cluster.
Is this how should they be distributed across three datacenters or availability zones?
Solution: 3-3-1

Yes

NEW QUESTION 22
In the context of a swarm mode cluster, does this describe a node?
Solution: an instance of the Docker engine participating in the swarm

Yes

NEW QUESTION 23
Which networking drivers allow you to enable multi-host network connectivity between containers?

macvlan, ipvlan, and overlay

bridge, user-defined, host

bridge, macvlan, ipvlan, overlay

host, macvlan, overlay, user-defined

NEW QUESTION 24
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.

Yes

NEW QUESTION 25
During development of an application meant to be orchestrated by Kubernetes, you want to mount the /data directory on your laptop into a container.
Will this strategy successfully accomplish this?
Solution: Add a volume to the pod that sets hostPath.path: /data, and then mount this volume into the pod’s containers as desired.

Yes

NEW QUESTION 26
From a DevOps process standpoint, it is best practice to keep changes to an application in version control.
Which of the following will allow changes to a docker Image to be stored in a version control system?

docker commit

docker save

A docker-compose.yml file

A dockerfile

NEW QUESTION 27
Will this command display a list of volumes for a specific container?
Solution: docker volume inspect nginx’

Yes

NEW QUESTION 28
Is this the purpose of Docker Content Trust?
Solution: Enable mutual TLS between the Docker client and server.

Yes