Replicaset — Certified Kubernetes App Developer (CKAD) Practice Questions

A ReplicaSet is a Kubernetes controller that ensures a specified number of identical pod replicas are running at all times, replacing any pods that fail or are deleted. The CKAD exam covers reading and modifying ReplicaSet specs, understanding how the selector field ties the controller to its pods, and scaling replicas imperatively or declaratively. Candidates should know that ReplicaSets are rarely created directly in practice because Deployments wrap them with rolling update and rollback capabilities, but understanding the underlying controller is necessary to troubleshoot Deployment behavior. The exam may present scenarios where a pod count does not match the desired state, requiring the candidate to identify the cause by inspecting the ReplicaSet.

Free questions on replicaset

More replicaset questions in the full bank

• A Deployment with 3 replicas is unavailable due to a node failure. How are new pods placed? Unlock answer & explanation →
• What is the difference between a Deployment and a Pod? Unlock answer & explanation →
• You create a Deployment and no pods are created. What is the most likely reason? Unlock answer & explanation →