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CKA study material · question 787 of 1000

A cluster operator is evaluating a CNI plugin that declares compatibility with CNI specification v0.3.1 only. What does the Kubernetes project require?

  1. Nothing further; any released CNI version is acceptable
  2. Compatibility with at least v0.4.0, with v1.0.0 recommended
  3. Compatibility with exactly one specification version
  4. Compatibility with v2.0.0 or later
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Answer: B. Compatibility with at least v0.4.0, with v1.0.0 recommended

A plugin must match at least version 0.4.0 of the CNI specification, so v0.3.1 alone falls short; plugins may declare several versions at once, and 1.0.0 is the recommended level.

Source: Network Plugins (Kubernetes) — Network plugins (overview)

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