I'm currently learning about Kubernetes networking.
What I've got so far, is that we have CNI plugins which takes care of handling network connectivity for pods - they create network interfaces inside a network namespace when a pod is created, they set up routes for the pod, etc. So basically kubernetes delegates some network-related tasks to the CNI plugins.
But I suppose there is some portion of networking tasks that kubernetes does by itself. For example - kubernetes assigns to each node a podCIDR .
For example, I've set up a kubernetes cluster using kubeadm, with the command:

kubeadm init --pod-network-cidr=192.168.0.0/16 --kubernetes-version=1.24.0

And when I then look at the nodes I see that each received its own podCIDR range, for example:

spec:
    podCIDR: 192.168.2.0/24
    podCIDRs:
    - 192.168.2.0/24

My question is: How does kubernetes calculate CIDR ranges for the nodes? Does it always assign a /24 subnet for each node?