Docker MCQs with answers Page - 4

Here, you will find a collection of MCQ questions on Docker. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. Which command is used to push an image to Docker Hub?

  • (A) docker push
  • (B) docker upload
  • (C) docker send
  • (D) docker publish

A

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Q. What is the purpose of the ARG instruction in a Dockerfile?

  • (A) To define build-time variables
  • (B) To set environment variables
  • (C) To specify the working directory
  • (D) To copy files into the container

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Q. Which command is used to rename a Docker container?

  • (A) docker rename
  • (B) docker mv
  • (C) docker update
  • (D) docker modify

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Q. What is the purpose of the HEALTHCHECK instruction in a Dockerfile?

  • (A) To check the health of the container
  • (B) To define the base image
  • (C) To specify the working directory
  • (D) To copy files into the container

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Q. Which command is used to pause a running Docker container?

  • (A) docker pause
  • (B) docker stop
  • (C) docker halt
  • (D) docker freeze

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Q. What is the purpose of the LABEL instruction in a Dockerfile?

  • (A) To add metadata to the image
  • (B) To define the base image
  • (C) To specify the working directory
  • (D) To copy files into the container

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Q. Which command is used to unpause a paused Docker container?

  • (A) docker unpause
  • (B) docker resume
  • (C) docker start
  • (D) docker continue

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Q. What is the purpose of the ONBUILD instruction in a Dockerfile?

  • (A) To trigger instructions when the image is used as a base for another image
  • (B) To define the base image
  • (C) To specify the working directory
  • (D) To copy files into the container

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Q. Which command is used to view the history of a Docker image?

  • (A) docker history
  • (B) docker inspect
  • (C) docker logs
  • (D) docker info

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Q. What is the purpose of the STOPSIGNAL instruction in a Dockerfile?

  • (A) To specify the signal to stop the container
  • (B) To define the base image
  • (C) To specify the working directory
  • (D) To copy files into the container

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