DCA · Question #72
DCA Question #72: Real Exam Question with Answer & Explanation
The correct answer is B: No. Node taints are a Kubernetes-specific feature designed to prevent pods from being scheduled on certain nodes unless they have corresponding tolerations, and are not part of Docker Swarm's scheduling capabilities.
Question
A company's security policy specifies that development and production containers must run on separate nodes in a given Swarm cluster. Can this be used to schedule containers to meet the security policy requirements? Solution: node taints
Options
- AYes
- BNo
Explanation
Node taints are a Kubernetes-specific feature designed to prevent pods from being scheduled on certain nodes unless they have corresponding tolerations, and are not part of Docker Swarm's scheduling capabilities.
Common mistakes.
- A. Docker Swarm utilizes node labels and placement constraints for service scheduling, not Kubernetes' node taints feature.
Concept tested. Docker Swarm vs. Kubernetes scheduling mechanisms
Reference. https://docs.docker.com/engine/reference/commandline/service_create/#add-constraints
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