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Docker Exam DCA Topic 6 Question 78 Discussion

Actual exam question for Docker's DCA exam
Question #: 78
Topic #: 6
[All DCA Questions]

Will this sequence of steps completely delete an image from disk in the Docker Trusted Registry?

Solution: Delete the image and run garbage collection on the Docker Trusted Registry.

Show Suggested Answer Hide Answer
Suggested Answer: A

This strategy does successfully mount the /data directory on your laptop into a container. Creating a persistentVolumeClaim requesting storageClass:'''' (which defaults to local storage) and hostPath and using this to populate a volume in a pod is a valid way to mount a host directory into a container in Kubernetes. A persistentVolumeClaim is a request for storage by a user or an application. A persistentVolume is an abstraction that represents a piece of storage in the cluster. A storageClass is a type of storage with a specific provisioner and parameters. A hostPath volume allows you to mount a file or directory from the host node's filesystem into your pod. A local volume allows you to mount local storage devices such as disks or partitions into your pod. By creating a persistentVolumeClaim with storageClass:'''' and hostPath, you are requesting a piece of storage that is backed by a hostPath volume on the node where the pod is scheduled. By using this persistentVolumeClaim to populate a volume in a pod, you are mounting the host directory into the container in the pod. Reference: https://kubernetes.io/docs/concepts/storage/persistent-volumes/, https://kubernetes.io/docs/concepts/storage/storage-classes/, https://kubernetes.io/docs/concepts/storage/volumes/#hostpath, https://kubernetes.io/docs/concepts/storage/volumes/#local


by Candida at Dec 12, 2023, 02:03 PM

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Emmett
2 days ago
That makes sense. If we delete the image and then run garbage collection, it should remove all traces of it. I agree with option A) Yes.
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Ivory
2 days ago
Hmm, interesting. I wonder if there's a way to automate that garbage collection process. Would save some time, you know?
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Geraldine
3 days ago
Ah, I see. Gotta run the garbage collection to really clean things up. Sounds like the right approach.
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Margo
4 days ago
I'm not too sure about this one. Deleting the image alone doesn't seem like it would completely remove it from the registry.
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Anastacia
5 days ago
I'm not sure, but I think it should work. Maybe option A) Yes is the correct answer.
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Emmett
7 days ago
Do you think deleting the image and running garbage collection will completely delete it from the Docker Trusted Registry?
upvoted 0 times
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