Docker MCQ Questions with answers and solutions Page 45

Q. Which command connects a running container to a network?

(A) docker run --connect
(B) docker connect network
(C) docker network connect
(D) docker add network

💬 Discuss

✅ Correct Answer: (C) docker network connect

Explanation: `docker network connect` attaches a running container to an additional network.

Published by Mr. Dubey ⭐ 111.54K Points at 24-Jul-2025 07:16 am in Docker

Q. Which network driver is best for production multi-host deployments?

(A) host
(B) bridge
(C) overlay
(D) none

💬 Discuss

✅ Correct Answer: (C) overlay

Explanation: Overlay networks are designed for secure, scalable multi-host deployments in production.

Published by Mr. Dubey ⭐ 111.54K Points at 24-Jul-2025 07:16 am in Docker

Q. What does `docker network prune` do?

(A) Deletes all unused networks
(B) Removes all containers
(C) Deletes all bridge networks
(D) Deletes running networks

💬 Discuss

✅ Correct Answer: (A) Deletes all unused networks

Explanation: `docker network prune` removes all networks not used by at least one container.

Published by Mr. Dubey ⭐ 111.54K Points at 24-Jul-2025 07:16 am in Docker

Q. Which protocol does Docker networking primarily use?

(A) ICMP
(B) UDP
(C) TCP/IP
(D) HTTP

💬 Discuss

✅ Correct Answer: (C) TCP/IP

Explanation: Docker networking is built on traditional TCP/IP protocols to allow standard communication between containers.

Published by Mr. Dubey ⭐ 111.54K Points at 24-Jul-2025 07:16 am in Docker

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

💬 Discuss

✅ Correct Answer: (C) Orchestrating multiple Docker containers across multiple nodes

Explanation: Docker Swarm is a native clustering and orchestration tool for Docker that manages containers across multiple hosts.

Published by Mr. Dubey ⭐ 111.54K Points at 24-Jul-2025 07:18 am in Docker

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

💬 Discuss

✅ Correct Answer: (A) docker swarm init

Explanation: `docker swarm init` is the command used to initialize a new Swarm cluster.

Published by Mr. Dubey ⭐ 111.54K Points at 24-Jul-2025 07:18 am in Docker

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

💬 Discuss

✅ Correct Answer: (C) docker swarm join

Explanation: `docker swarm join` with the appropriate token adds a new worker node to the Swarm.

Published by Mr. Dubey ⭐ 111.54K Points at 24-Jul-2025 07:18 am in Docker

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

💬 Discuss

✅ Correct Answer: (B) docker node ls

Explanation: `docker node ls` lists all the nodes participating in the Swarm cluster.

Published by Mr. Dubey ⭐ 111.54K Points at 24-Jul-2025 07:18 am in Docker

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

💬 Discuss

✅ Correct Answer: (C) A definition for a task to be executed by the swarm

Explanation: A service in Docker Swarm defines how containers (tasks) are deployed across the cluster.

Published by Mr. Dubey ⭐ 111.54K Points at 24-Jul-2025 07:18 am in Docker

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

💬 Discuss

✅ Correct Answer: (C) docker service create

Explanation: `docker service create` is used to deploy a new service in a Docker Swarm.

Published by Mr. Dubey ⭐ 111.54K Points at 24-Jul-2025 07:18 am in Docker

Previous
First
45
46
47
48
49
....
Last
Next

Jump to