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CKA study material · question 88 of 1000

Which key algorithm does kubeadm use by default when generating certificates?

  1. Ed25519
  2. RSA-4096
  3. ECDSA-P256
  4. RSA-2048
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Answer: D. RSA-2048

encryptionAlgorithm defaults to RSA-2048, with RSA-3072, RSA-4096 and ECDSA-P256 as alternatives.

Source: Certificate Management with kubeadm (Kubernetes) — Choosing an encryption algorithm

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