Docker Swarm MCQs with answers Page - 1

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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Q. What is Docker Swarm used for?

  • (A) Building Docker images
  • (B) Creating container volumes
  • (C) Orchestrating multiple Docker containers across multiple nodes
  • (D) Logging Docker output

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Q. What command is used to initialize a Docker Swarm?

  • (A) docker swarm init
  • (B) docker swarm create
  • (C) docker swarm start
  • (D) docker swarm up

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Q. Which command adds a new node to the Swarm as a worker?

  • (A) docker swarm join --manager
  • (B) docker swarm add --worker
  • (C) docker swarm join
  • (D) docker swarm node add

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Q. Which command shows the nodes in a Swarm cluster?

  • (A) docker swarm list
  • (B) docker node ls
  • (C) docker swarm status
  • (D) docker cluster show

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Q. What is a service in Docker Swarm?

  • (A) A container log
  • (B) A configuration file
  • (C) A definition for a task to be executed by the swarm
  • (D) An image pulled from Docker Hub

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Q. Which command deploys a new service in Docker Swarm?

  • (A) docker create service
  • (B) docker swarm run
  • (C) docker service create
  • (D) docker run service

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Q. What is the default number of replicas if not specified when creating a Swarm service?

  • (A) 1
  • (B) 2
  • (C) 3
  • (D) 0

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Q. How does Docker Swarm handle load balancing?

  • (A) Using a third-party plugin
  • (B) Via built-in routing mesh
  • (C) Through NGINX
  • (D) It does not handle load balancing

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Q. What happens when a Swarm manager node fails?

  • (A) All containers stop
  • (B) The Swarm becomes unusable
  • (C) A new manager is elected from the other manager nodes
  • (D) Docker Swarm shuts down

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Q. What is the role of a worker node in Docker Swarm?

  • (A) Manage other nodes
  • (B) Deploy services and manage tasks
  • (C) Maintain service states
  • (D) Only logs events

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