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Docker Exam DCA Topic 3 Question 72 Discussion

Actual exam question for Docker's DCA exam
Question #: 72
Topic #: 3
[All DCA Questions]

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 provisioner is specified, and subsequently a persistentVolumeClaim is created.

Show Suggested Answer Hide Answer
Suggested Answer: B

Better caching when building Docker images is not an advantage of multi-stage builds. Multi-stage builds are a feature that allows you to use multiple FROM statements in a single Dockerfile. Each FROM statement begins a new stage of the build, with its own base image and instructions. You can selectively copy artifacts from one stage to another, leaving behind everything you don't want in the final image. The advantages of multi-stage builds are:

Reducing the size of the final image by removing unnecessary dependencies or intermediate files.

Improving the security of the final image by minimizing the attack surface and avoiding leaking secrets.

Simplifying the development workflow by using different tools or environments in different stages. Better caching when building Docker images is not an advantage of multi-stage builds, as it depends on other factors, such as the order and content of the instructions in each stage, the availability and freshness of the base images and intermediate layers, and the use of build arguments or environment variables that may invalidate the cache. Reference: https://docs.docker.com/develop/develop-images/multistage-build/, https://docs.docker.com/develop/develop-images/dockerfile_best-practices/#leverage-build-cache


Contribute your Thoughts:

Vesta
2 days ago
Ah, the age-old question of 'is this enough?' in Kubernetes. I'll go with yes, but with the caveat that I'm probably missing something crucial.
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Tesha
4 days ago
Haha, just set the provisioner and you're good to go! Easy peasy, Kubernetes makes it all look so simple. *winks*
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Jacob
11 days ago
Wait, what about the available external storage? Doesn't that matter? I'm not sure I'd say yes without more details.
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Ashanti
22 days ago
I agree with India, because the default provisioner will automatically create the persistentVolume based on the claim.
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Lorrine
24 days ago
I disagree, I don't think just specifying a default provisioner and creating a persistentVolumeClaim is enough.
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Roselle
27 days ago
Hmm, the key seems to be the default provisioner. If that's set up, then the PersistentVolumeClaim should trigger dynamic provisioning. Seems pretty straightforward to me.
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Alverta
3 days ago
User 3: No, it won't work without the default provisioner
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Floyd
8 days ago
User 2: Agreed, as long as the default provisioner is in place, it should work
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Carolynn
13 days ago
User 1: Yes
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India
1 months ago
I think the conditions are sufficient for Kubernetes to dynamically provision a persistentVolume.
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