DCA SAMPLE EXAM | DOCKER LEARNING DCA MODE: DOCKER CERTIFIED ASSOCIATE (DCA) EXAM PASS CERTIFY

DCA Sample Exam | Docker Learning DCA Mode: Docker Certified Associate (DCA) Exam Pass Certify

DCA Sample Exam | Docker Learning DCA Mode: Docker Certified Associate (DCA) Exam Pass Certify

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Docker Certified Associate (DCA) Exam Sample Questions (Q64-Q69):

NEW QUESTION # 64
Will this command display a list of volumes for a specific container?
Solution. 'docker container inspect nginx'

  • A. No
  • B. Yes

Answer: A

Explanation:
This command will not display a list of volumes for a specific container, as it will show detailed information on the container itself, such as its configuration, network settings, state, and log path1. To display a list of volumes for a specific container, you need to use the --format option with a custom template that filters the output by the Mounts field2. For example, the following command will show the source and destination of the volumes mounted in the nginx container:
docker container inspect --format=' { {range .Mounts}} { {.Source}} -> { {.Destination}} { {end}}' nginx References:
* docker container inspect | Docker Docs
* How to Use Docker Inspect Command - Linux Handbook


NEW QUESTION # 65
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

Answer: A

Explanation:
= The command kubectl describe deployment api displays the events table for the deployment object called api, along with other information such as labels, replicas, strategy, conditions, and pod template. The events table shows the history of actions that have affected the deployment, such as scaling, updating, or creating pods. This can help troubleshoot any issues with the deployment. To see only the events table, you can use the flag --show-events=true with the command. References:
* Deployments | Kubernetes
* kubectl - How to describe kubernetes resource - Stack Overflow
* Kubectl: Get Deployments - Kubernetes - ShellHacks
* kubernetes - Kubectl get deployment yaml file - Stack Overflow


NEW QUESTION # 66
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: Use the DTR web Ul to make all tags in the repository immutable.

  • A. No
  • B. Yes

Answer: A

Explanation:
Explanation
n: = Using the DTR web UI to make all tags in the repository immutable is not a good way to prevent an image, such as 'nginx:latest', from being overwritten by another user with push access to the repository. This is because making all tags immutable would prevent any updates to the images in the repository, which may not be desirable for some use cases. For example, if a user wants to push a new version of 'nginx:latest' with a security patch, they would not be able to do so if the tag is immutable. A better way to prevent an image from being overwritten by another user is to use the DTR webUI to create a promotion policy that restricts who can push to a specific tag or repository1. Alternatively, the user can also use the DTR API to create a webhook that triggers a custom action when an image is pushed to a repository2. References:
* Prevent tags from being overwritten | Docker Docs
* Create webhooks | Docker Docs


NEW QUESTION # 67
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.

  • A. Yes
  • B. No

Answer: A


NEW QUESTION # 68
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. Set containers. Mounts. hostBinding: /data in the container's specification.

  • A. No
  • B. Yes

Answer: A

Explanation:
The strategy will not successfully accomplish mounting the /data directory on your laptop into a container. The containers. Mounts. hostBinding: /data is not a valid syntax for specifying a bind mount in a Kubernetes container specification. According to the Kubernetes documentation), the correct way to mount a host directory into a container is to use a hostPath volume, which takes a path parameter that specifies the location on the host. For example, to mount the /data directory on your laptop into a container at /var/data, you can use the following YAML snippet:
spec:
containers:
-name:my-container
image:my-image
volumeMounts:
-name:data-volume
mountPath:/var/data
volumes:
-name:data-volume
hostPath:
path:/data
Volumes), Use bind mounts)


NEW QUESTION # 69
......

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