DCA Practice Questions - Docker Certified Associate (DCA) Exam - Variant 2 - DCA Practice Questions - Docker Certified Associate (DCA) Exam

Question 1

Which command initializes a new Docker Swarm cluster on the current host and promotes it to a manager node?

docker swarm create docker swarm init docker node init docker cluster start

Correct Answer:

docker swarm init

Question 2

A swarm cluster has 5 manager nodes. How many managers can fail before the cluster loses quorum and becomes unable to schedule new tasks?

1 2 3 4

Correct Answer:

Question 3

Which command creates a swarm service named `web` running 3 replicas of nginx and publishes port 80 on the swarm ingress mesh?

docker service create --name web --replicas 3 -p 80:80 nginx docker run --name web --scale 3 -p 80:80 nginx docker swarm deploy --name web --replicas 3 nginx docker stack create web --replicas 3 -p 80:80 nginx

Correct Answer:

docker service create --name web --replicas 3 -p 80:80 nginx

Question 4

What is the difference between a `replicated` and a `global` service mode in Docker Swarm?

Replicated runs on managers only; global runs on workers only Replicated runs a specified number of tasks; global runs exactly one task on every node that meets constraints Replicated uses host networking; global uses overlay networking Replicated is deprecated; global is the only supported mode

Correct Answer:

Replicated runs a specified number of tasks; global runs exactly one task on every node that meets constraints

Question 5

Which command lists the tasks (containers) belonging to a swarm service named `api`?

docker service tasks api docker service ps api docker service inspect api --tasks docker container ls --service api

Correct Answer:

docker service ps api

Question 1

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About this Exam

Prepare with the DCA Practice Questions - Docker Certified Associate (DCA) Exam - Variant 2 practice quiz. This question bank includes 100 questions covering command, swarm, docker, service, and network. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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DCA Practice Questions - Docker Certified Associate (DCA) Exam - Variant 2

This practice set contains 100 questions from the matching question bank and focuses on command, swarm, docker, service, and network. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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DCA Practice Questions - Docker Certified Associate (DCA) Exam - Variant 2

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