{
  "id": "cks-mcq-kubelet-auth",
  "title": "Securing the Kubelet",
  "category": "Cluster Setup",
  "difficulty": "Medium",
  "type": "mcq",
  "weight": 2,
  "description": "The kubelet exposes its own API on port 10250, which can allow an attacker to run `exec` commands on pods if left unsecured. Which configuration setting in the kubelet config file ensures unauthenticated requests are rejected?",
  "options": [
    {
      "id": "a",
      "text": "authorization.mode: Webhook"
    },
    {
      "id": "b",
      "text": "readOnlyPort: 0"
    },
    {
      "id": "c",
      "text": "authentication.anonymous.enabled: false"
    },
    {
      "id": "d",
      "text": "protectKernelDefaults: true"
    }
  ],
  "correct_option": "c",
  "explanation": "Setting `authentication.anonymous.enabled: false` ensures that the kubelet will reject any API requests that do not present a valid client certificate or bearer token.",
  "hints": [],
  "setup_commands": [],
  "default_namespace": "default",
  "teardown_commands": []
}