In the context of a swarm mode cluster, does this describe a node? a virtual machine participating in the swarm
In the context of a swarm mode cluster, does this describe a node? a virtual machine participating in the swarm
A is correct. A node is an instance of the Docker engine that participates in a swarm. A swarm is a cluster of one or more nodes, which can be physical or virtual machines. https://docs.docker.com/engine/swarm/key-concepts
In the context of a Docker swarm mode cluster, a virtual machine participating in the swarm is indeed considered a node.