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CKA study material · question 35 of 1000

Besides the CNI plugin, what must the container runtime provide for every Pod sandbox?

  1. An iptables chain per container
  2. A DNS resolver process
  3. A dedicated bridge per Pod
  4. A loopback interface
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Answer: D. A loopback interface

Kubernetes requires the runtime to supply a loopback interface for each sandbox it creates.

Source: Network Plugins (Kubernetes) — Network Plugin Requirements › Loopback CNI

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