DockerDocker
DCA · Question #129
DCA Question #129: Real Exam Question with Answer & Explanation
The correct answer is B: No. The command docker node Is is incorrectly capitalized; the correct command to list nodes in a Docker Swarm is docker node ls (lowercase 'ls').
Submitted by kwame.gh· Apr 18, 2026Container Orchestration
Question
Will this command list all nodes in a swarm cluster from the command line? Solution: 'docker node Is'
Options
- AYes
- BNo
Explanation
The command docker node Is is incorrectly capitalized; the correct command to list nodes in a Docker Swarm is docker node ls (lowercase 'ls').
Common mistakes.
- A. The command contains a typographical error ('Is' instead of 'ls'), which prevents it from being a valid Docker CLI command to list nodes.
Concept tested. Docker Swarm node listing command syntax
Reference. https://docs.docker.com/engine/reference/commandline/node_ls/
Topics
#Docker Swarm#Swarm nodes#Command line#Syntax error
Community Discussion
No community discussion yet for this question.