Certified Kubernetes Application Developer (CKAD) Practice Test

Question: 1 / 400

In which format are Kubernetes Secrets typically stored within the cluster?

Plain text

JSON

Base64-encoded

Kubernetes Secrets are typically stored in the cluster using Base64 encoding. This process is implemented to ensure that sensitive information, such as passwords, tokens, and SSH keys, is not represented in plain text when stored in etcd, the key-value store used by Kubernetes. The use of Base64 encoding helps obfuscate this data, making it less readable at first glance.

While Base64 does not provide encryption or significant security on its own, it serves as a basic form of encoding that allows Kubernetes to manage and transmit the information without exposing it directly. It should be noted that security best practices recommend further protecting sensitive data through additional means, such as encryption at rest and in transit.

The other formats mentioned, such as plain text and JSON, do not align with the designated storage method for Kubernetes Secrets. Plain text would expose sensitive data directly, while JSON is not the native format used; Secrets are primarily expressed in YAML, but within the cluster, the Base64 encoding is a defining characteristic of how the data is stored.

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YAML

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