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CKA study material · question 63 of 1000

What must be true of the Pod network CIDR chosen for a cluster?

  1. It must be a /16 or larger
  2. It must be routable from outside the cluster
  3. It must be inside the Service cluster IP range
  4. It must not overlap any host network in use
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Answer: D. It must not overlap any host network in use

An overlap between the Pod network and a host network causes problems, so a non-conflicting block is chosen.

Source: Creating a cluster with kubeadm (Kubernetes) — Installing a Pod network add-on

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