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CompTIA Linux+ XK0-005 Practice Question

An administrator needs to download the latest version of an Ubuntu image for container deployment. Which of the following commands will perform this operation?

pull ubuntu
docker rmi ubuntu
docker pull ubuntu
docker push ubuntu

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Answer Description

The command docker pull ubuntu retrieves the latest version of the Ubuntu image from the default Docker hub registry. docker pull ubuntu is the correct command because it specifies only the image name, which defaults to pulling the 'latest' tag if no other version is specified. pull ubuntu is incorrect because it is missing the docker command. docker push ubuntu is incorrect because it is using push which is for uploading images, not downloading them. docker rmi ubuntu is incorrect because rmi is used to remove images, not to pull them.

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CompTIA Linux+ XK0-005

Scripting, Containers, and Automation

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