Certified Kubernetes Application Developer (CKAD) Practice Test

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Certified Kubernetes Application Developer (CKAD) Exam. Gain confidence with flashcards and multiple-choice questions, complete with hints and explanations. Achieve your certification with ease!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What does etcd primarily serve as in a Kubernetes cluster?

A distributed container runtime
A front-end interface for commands
A distributed key-value store for cluster metadata
A mechanism for scheduling workloads

The correct answer is: A distributed key-value store for cluster metadata

etcd serves as a distributed key-value store in a Kubernetes cluster, primarily used for storing configuration data and the overall state of the cluster. It holds all the critical information about the cluster, including the configuration of nodes, pods, services, and replication controllers, among others. By utilizing a distributed model, etcd ensures high availability and consistency of the data stored. This is essential for maintaining the desired state of the cluster, as Kubernetes relies on etcd to retrieve and store information for managing the resources and operations efficiently. In contrast, a distributed container runtime is responsible for running container images and managing container lifecycles, which is a different function. A front-end interface for commands typically refers to the command-line tools or APIs that interact with the Kubernetes cluster but does not handle data persistence. Lastly, the mechanism for scheduling workloads focuses on deploying pods and managing their scheduling, which is a separate responsibility from data storage and state management provided by etcd.