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  1. Home
  2. Docker Certification
  3. DCA Exam
  4. Docker.DCA.v2023-09-25.q118 Dumps
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Question 61

In the context of a swarm mode cluster, does this describe a node?
Solution: a virtual machine participating in the swarm

Correct Answer: A
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Question 62

Will this Linux kernel facility limit a Docker container's access to host resources, such as CPU or memory?
Solution: seccomp

Correct Answer: B
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Question 63

Will this command list all nodes in a swarm cluster from the command line?
Solution. 'docker inspect nodes

Correct Answer: B
Explanation
This command does not list all nodes in a swarm cluster from the command line. The docker inspect command shows low-level information about one or more objects, such as containers, images, networks, etc. It does not show information about nodes or services. To list all nodes in a swarm cluster from the command line, you need to use docker node ls command. This command shows information about all the nodes that are part of the swarm, such as their ID, hostname, status, availability, etc. References:
https://docs.docker.com/engine/reference/commandline/inspect/,
https://docs.docker.com/engine/reference/commandline/node_ls/
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Question 64

Your organization has a centralized logging solution, such as Splunk.
Will this configure a Docker container to export container logs to the logging solution?
Solution: Set the log-driver and log-oPt keys to values for the logging solution (Splunk) In the daemon.json file.

Correct Answer: A
Explanation
Setting the log-driver and log-opt keys to values for the logging solution (Splunk) in the daemon.json file does configure a Docker container to export container logs to the logging solution. The daemon.json file is a configuration file for the Docker daemon that allows you to specify various options for the daemon, such as logging drivers, logging options, storage drivers, etc. The log-driver option sets the default logging driver for all containers, unless overridden by the --log-driver option when creating or running a container. The log-opt option sets the default options for the logging driver, such as the Splunk URL, token, source, etc. References:
https://docs.docker.com/config/containers/logging/configure/,
https://docs.docker.com/config/containers/logging/splunk/
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Question 65

Is this the purpose of Docker Content Trust?
Solution. Indicate an image on Docker Hub is an official image.

Correct Answer: B
Explanation
Indicating an image on Docker Hub is an official image is not the purpose of Docker Content Trust. Official images are curated images that are provided and maintained by Docker, Inc. or by upstream software maintainers. Official images have a special badge on Docker Hub that indicates their status. Official images are not necessarily signed by Docker Content Trust, although some of them are. The purpose of Docker Content Trust is to sign and verify image tags, not to indicate official images. References:
https://docs.docker.com/docker-hub/official_images/, https://docs.docker.com/engine/security/trust/
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