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CKA study material · question 540 of 1000

An operator reaches a Service through the API server proxy and prefixes the name with https: to secure it. What guarantee does that give?

  1. Encryption, but no certificate validation and no client credentials
  2. Full mutual TLS between the API server and the backend
  3. Nothing — the prefix is ignored by the proxy
  4. Certificate validation, but the traffic remains unencrypted
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Answer: A. Encryption, but no certificate validation and no client credentials

The https: prefix encrypts the API server's proxy connection but validates no certificate and presents no credentials, so it offers no integrity guarantee and is still unsafe over an untrusted network.

Source: Communication between Nodes and the Control Plane (Kubernetes) — Control plane to node › API server to nodes, pods, and services

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