Certified Kubernetes Application Developer (CKAD) Practice Test 2025 - Free CKAD Practice Questions and Comprehensive Study Guide

To manage stateful applications in Kubernetes, a StatefulSet is the appropriate object to use. StatefulSets are specifically designed for applications that require persistent storage, stable network identities, and ordered deployment and scaling. This is particularly important for applications like databases, where preserving the identity of each instance is crucial for maintaining data integrity and consistency.

StatefulSets provide unique network identities, allowing each pod in the set to be distinguished from others, which is vital when pods need to persist their state across restarts. Moreover, they manage persistent volumes, ensuring that each pod can be associated with a specific, unique, and stable storage volume, thus maintaining state even when pods are rescheduled to different nodes.

In contrast, other options like Deployments and ReplicaSets are standardized for stateless applications, where any instance can come and go without maintaining any persistent state. Deployments manage replicas of identical pods that do not require any specific order or identity, making them unsuitable for stateful management. DaemonSets ensure that a copy of a pod runs on each node but are also not designed for managing application state.