Pass Your DCA Dumps as PDF Updated on 2022 With 170 Questions [Q25-Q49]

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Pass Your DCA Dumps as PDF Updated on 2022 With 170 Questions

Docker DCA Real Exam Questions and Answers FREE

Docker Certified Associate Certification Path

Docker Certified Associate Exam is associate level Certification.
It is strongly recommended that aspirants for this exam should have a foundational level of knowledge about Docker containerization technology.

Introduction to Docker Certified Associate Exam

Docker Certified Associate (DCA) certification serves as a foundational benchmark for real-world container technology expertise with Docker Enterprise Edition. Candidates for DCA Exam are seeking to prove fundamental Docker containerization technology knowledge and skills. Before taking this exam, exam aspirants ought to have a solid fundamental information of the concepts shared in the preparation guide as well as on containerization.

It is suggested that professionals accustomed to the ideas and also the technologies represented here by taking relevant training courses. Candidates are expected to have a strong understanding of core docker services, docker images, docker container, and their cmdlets.
After passing this exam, candidates get a certificate from Docker that helps them to demonstrate their proficiency in Docker containerization technology to their clients and employers.

QUESTION 25
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: Add them to a team in the engineering organization that has read/write access to the engineering/api repository.

Yes

QUESTION 26
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 and mount it directly into the appropriate pod and container using the .spec.containers.configMounts key.

Yes

QUESTION 27
Is this a function of UCP?
Solution: enforces the deployment of signed images to the cluster

Yes

QUESTION 28
You set up an automatic pruning policy on a DTR repository to prune all images using Apache licenses. What effect does this have on images in this repository?

Matching images are untagged once they are older than the pruning threshold set in the repository’s Settings tab.

Matching Images are untagged during the next prune job.

Matching images are deleted during the next prune Job.

Matching images are untagged during the next prune job, and subsequently deleted once they are older than the pruning threshold set in the repository’s Settings tab.

QUESTION 29
Is this a way to configure the Docker engine to use a registry without a trusted TLS certificate?
Solution: Pass the ‘–insecure-registry’ flag to the daemon at run time.

Yes

QUESTION 30
The output of which command can be used to find the architecture and operating system an image is
compatible with?

docker image inspect –filter {{.Architecture}} {{.OS}} ‘ <image-id>

docker image ls <image-id>

docker image inspect –format {{.Architecture}} {{.OS}} ‘ <image-id>

docker image info <image-id>

QUESTION 31
Which of the following commands wifi automatically create a volume when a container is started?

‘docker container run –name nginxtest –volumes=/app nginx’

‘docker container run –name nginxtest -v /app:mount nginx’

‘docker container run –name nginxtest –volumes myvol:/app:new nginx’

‘docker container run –name nginxtest -v myvol:/app nginx’

QUESTION 32
When an application being managed by UCP fails, you would like a summary of all requests made to the UCP API in the hours leading up to the failure.
What must be configured correctly beforehand for this to be possible?

All engines in the cluster must have their log driver set to the metadata’ or request’ level.

UCP logging levels must be set to the info’ or debug’ level.

Set the logging level in theconfig object for the ucp-kube-api-server container to warning or higher.

UCP audit logs must be set to the metadata’ or request’ level.

QUESTION 33
Which of the following commands is used to display system-wide Docker configuration on a host?

docker info

docker status

docker inspect

docker system

QUESTION 34
You want to provide a configuration file to a container at runtime. Does this set of Kubernetes tools and steps accomplish this?
Solution: Mount the configuration file directly into the appropriate pod and container using the .spec.containers.configMounts key.

Yes

QUESTION 35
Will this command ensure that overlay traffic between service tasks is encrypted?
Solution: docker network create -d overlay -o encrypted=true <network-name>

Yes

QUESTION 36
Will this sequence of steps completely delete an image from disk in the Docker Trusted Registry?
Solution: Delete the image and delete the image repository from Docker Trusted Registry

Yes

QUESTION 37
What is the purpose of multi-stage builds?

Better logical separation of Dockerfile instructions for better readability

Optimizing images by copying artifacts selectively from previous stages

Better caching when building Docker images

Faster image builds by allowing parallel execution of Docker builds

QUESTION 38
Which of the following statements is true about secrets?

Secrets can be created from any node in the cluster.

Secrets can be modified after they are created.

Secret are stored unencrypted on manager nodes.

Secrets can be created using standard input (STDIN) and a file.

QUESTION 39
Will this command ensure that overlay traffic between service tasks is encrypted?
Solution: docker service create –network –encrypted

Yes

QUESTION 40
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’

Yes

QUESTION 41
Two pods bear the same label, app: dev.
Will a label selector matching app: dev match both of these pods?

Yes, as long as all the containers in those pods are passing their livenessProbes and readinessProbes.

Yes, if both pods were pre-existing when the label selector was declared.

Yes, if the pods are in the same Kubernetes namespace as the object bearing the label selector

Yes, if the pods are in the same Kubernetes namespace as the object bearing the label selector and both pods were preexisting when the label selector was declared.

QUESTION 42
Will a DTR security scan detect this?
Solution: licenses for known third party binary components

Yes

QUESTION 43
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 controller managing the pod is autoscaled back to delete the unhealthy pod and alleviate load.

Yes

QUESTION 44
Will this command ensure that overlay traffic between service tasks is encrypted?
Solution: docker service create –network –secure

Yes

QUESTION 45
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.

QUESTION 46
Does this command display all the pods in the cluster that are labeled as ‘env: development’?
Solution: ‘kubectl get pods –all-namespaces -I env=development’

Yes

QUESTION 47
Which of the following namespaces is disabled by default and must be enabled at Docker engine runtime in order to be used?

mnt

net

pid

user

QUESTION 48
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’

Yes

QUESTION 49
Which of the following is supported by control groups?

Manage certificates

Collect net

Limit CPU usage within a container

Isolate processes in a container

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