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  1. Home
  2. Docker Certification
  3. DCA Exam
  4. Docker.DCA.v2024-05-09.q158 Dumps
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Question 6

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

Correct Answer: B
Explanation
Deleting the image and deleting the image repository from Docker Trusted Registry will not completely delete the image from disk. According to the official documentation, you also need to run garbage collection on the Docker Trusted Registry to reclaim disk space.
References: https://docs.docker.com/ee/dtr/admin/manage-images/garbage-collection/
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Question 7

Can this set of commands identify the published port(s) for a container?
Solution. 'docker container inspect", docker port'

Correct Answer: B
Explanation
The set of commands docker container inspect and docker port cannot identify the published port(s) for a container. The docker container inspect command returns low-level information on a container, such as its ID, name, state, network settings, mounts, etc1. However, it does not show the port mappings between the container and thehost2. The docker port command lists the port mappings or a specific mapping for a container, but it requires the container name or ID as an argument3. Therefore, to identify the published port(s) for a container, you need to use both commands together, such as docker port $(docker container inspect -f
'{{.Name}}' CONTAINER)4. References:
* docker container inspect | Docker Docs
* How to inspect a running Docker container - Stack Overflow
* docker port | Docker Docs
* List port for Docker container using command line - Stack Overflow
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Question 8

A persistentVolumeClaim (PVC) is created with the specification storageClass: "", and size requirements that cannot be satisfied by any existing persistentVolume.
Is this an action Kubernetes takes in this situation?
Solution: The PVC remains unbound until a persistentVolume that matches all requirements of the PVC becomes available.

Correct Answer: A
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Question 9

Will this command mount the host's '/data' directory to the ubuntu container in read-only mode?
Solution: 'docker run --volume /data:/mydata:ro ubuntu'

Correct Answer: B
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Question 10

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

Correct Answer: B
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