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Docker DCA Exam - 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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Lucia
4 months ago
Definitely, it should work as intended!
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Jesusa
4 months ago
Wait, does garbage collection really delete everything?
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Mona
4 months ago
Garbage collection is key for cleanup.
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Noelia
5 months ago
I think it might not be enough.
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Lajuana
5 months ago
Yes, that's how it works!
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Tayna
5 months ago
I’m leaning towards "No" because I think there might be some lingering references even after garbage collection.
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Zack
5 months ago
I feel like I've seen something about needing to remove all tags before the image is fully deleted. Is that right?
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Gracie
5 months ago
I remember a practice question where we had to consider if the image was tagged or not. That might affect whether it gets deleted completely.
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Meghann
6 months ago
I think deleting the image and running garbage collection should work, but I'm not entirely sure if there are other steps involved.
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Billy
6 months ago
Okay, I've got a good handle on this. Delete the image, then run the garbage collection to fully remove it from the registry. Shouldn't be too tricky.
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Janna
6 months ago
Yeah, this seems like a simple solution. As long as you delete the image and run the garbage collection, it should completely remove it from the registry.
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Tanja
6 months ago
Hmm, I'm not totally sure about this one. I'll need to double-check the steps to make sure I'm doing it correctly.
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Nicolette
6 months ago
I think this one is pretty straightforward. Deleting the image and running garbage collection should do the trick.
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Royce
6 months ago
I'm a little confused on the garbage collection part. Does that happen automatically, or do I need to run a specific command for that?
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Annelle
6 months ago
I'm a bit confused on the difference between single-segment and double-segment protection. I'll need to review those concepts before I can confidently answer this.
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Lorean
6 months ago
The Azure Policy definition seems like a good option to consider as well. I'll need to research the specific policy settings that would achieve the desired behavior for this scenario.
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Ricki
6 months ago
Okay, let me walk through this step-by-step. First, you select the event that triggers the rule. Then you set the conditions that need to be met. After that, you define any exceptions. And finally, you choose the actions to be taken. I'm pretty sure that's the right order.
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Claudio
11 months ago
Haha, yeah, you gotta take out the trash if you want a clean registry. Can't just leave those old images lying around!
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Lili
10 months ago
Haha, yeah, you gotta take out the trash if you want a clean registry. Can't just leave those old images lying around!
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Carissa
10 months ago
B) No
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Monroe
11 months ago
A) Yes
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Emmett
11 months 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
11 months 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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Rebeca
10 months ago
User 2: I'm not sure, but that would definitely be helpful if we could automate it.
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Tracey
10 months ago
User 1: Yes
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Heike
10 months ago
User 2: I'm not sure, but that would be really helpful if we could automate it.
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Nana
11 months ago
User 1: Yes
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Geraldine
11 months ago
Ah, I see. Gotta run the garbage collection to really clean things up. Sounds like the right approach.
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Margo
11 months 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
11 months ago
I'm not sure, but I think it should work. Maybe option A) Yes is the correct answer.
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Emmett
12 months ago
Do you think deleting the image and running garbage collection will completely delete it from the Docker Trusted Registry?
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