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KCNA · Question #178

We can extend the Kubernetes API with Kubernetes API Aggregation Layer and CRDs. What is CRD?

The correct answer is A. Custom Resource Definition. CRD stands for Custom Resource Definition, a Kubernetes mechanism to extend its API by defining new custom resource types.

Submitted by femi9· May 4, 2026Kubernetes Fundamentals

Question

We can extend the Kubernetes API with Kubernetes API Aggregation Layer and CRDs. What is CRD?

Options

  • ACustom Resource Definition
  • BCustom Restricted Definition
  • CCustomized RUST Definition
  • DCustom RUST Definition

How the community answered

(30 responses)
  • A
    93% (28)
  • C
    3% (1)
  • D
    3% (1)

Why each option

CRD stands for Custom Resource Definition, a Kubernetes mechanism to extend its API by defining new custom resource types.

ACustom Resource DefinitionCorrect

CRD stands for Custom Resource Definition. It is a Kubernetes API primitive that allows users to define custom resources, extending the Kubernetes API with new object kinds that behave like built-in Kubernetes resources.

BCustom Restricted Definition

"Custom Restricted Definition" is not a recognized term in Kubernetes.

CCustomized RUST Definition

"Customized RUST Definition" is not a recognized term and incorrectly references the Rust programming language.

DCustom RUST Definition

"Custom RUST Definition" is not a recognized term and incorrectly references the Rust programming language.

Concept tested: Kubernetes Custom Resource Definition (CRD)

Source: https://kubernetes.io/docs/concepts/extend-kubernetes/api-extension/custom-resources/

Topics

#CRDs#Kubernetes API Extension#API Aggregation

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