Docker Swarm MCQs with answers Page - 2

You will find multiple-choice questions (MCQs) related to #Docker Swarm here. Go through these questions to prepare effectively for your upcoming exams and interviews.

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A

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Q. What command updates the image of a running service?

  • (A) docker service upgrade
  • (B) docker update image
  • (C) docker service update
  • (D) docker image update

A

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Q. Which command removes a service in Docker Swarm?

  • (A) docker service remove
  • (B) docker rm service
  • (C) docker swarm delete
  • (D) docker service down

A

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Q. How do you scale a service in Docker Swarm?

  • (A) docker scale service
  • (B) docker service scale
  • (C) docker service resize
  • (D) docker swarm scale

A

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Q. What is a task in Docker Swarm?

  • (A) A Dockerfile step
  • (B) A single running container
  • (C) A log entry
  • (D) A plugin

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Q. Which of the following best describes a manager node?

  • (A) Runs background tasks
  • (B) Only deploys containers
  • (C) Manages the cluster and schedules tasks
  • (D) Monitors the health of services only

A

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Q. What is the main purpose of the Raft protocol in Swarm?

  • (A) Encrypt container logs
  • (B) Share files across containers
  • (C) Maintain consensus and state across manager nodes
  • (D) Distribute Docker images

A

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Q. Which of the following commands demotes a manager to a worker?

  • (A) docker node demote
  • (B) docker swarm demote
  • (C) docker manager down
  • (D) docker node update --role worker

A

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Q. How do you leave a Docker Swarm?

  • (A) docker swarm exit
  • (B) docker leave
  • (C) docker swarm leave
  • (D) docker node remove

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Q. What happens if all manager nodes are lost in a Swarm?

  • (A) Worker nodes become managers
  • (B) Cluster state is lost unless a backup is available
  • (C) Docker automatically recreates managers
  • (D) Swarm switches to legacy mode

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Q. What command promotes a worker to manager?

  • (A) docker promote node
  • (B) docker node promote
  • (C) docker swarm promote
  • (D) docker node manager

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