CKA Cluster Architecture

Question 1

What is a Pod in Kubernetes?

Accepted Answer

The smallest deployable unit that can contain one or more containers

Answer

A Pod is Kubernetes' atomic deployment unit, wrapping one or more containers that share storage, networking, and a specification for how to run.

Question 2

What is a Kubernetes Deployment?

Accepted Answer

A resource that manages ReplicaSets and provides declarative updates for Pods

Answer

Deployments manage the rollout, scaling, and updating of Pod replicas, enabling rolling updates, rollbacks, and declarative state management.

Question 3

What is a ConfigMap?

Accepted Answer

An object storing non-confidential configuration data as key-value pairs

Answer

ConfigMaps store configuration data separately from application code, allowing configuration changes without rebuilding container images.

Question 4

How does Kubernetes handle service discovery?

Accepted Answer

Through Services that provide stable DNS names and IP addresses for Pods

Answer

Kubernetes Services provide stable network endpoints with DNS names, automatically routing traffic to healthy Pods regardless of their changing IP addresses.

Question 5

What is a Persistent Volume (PV)?

Accepted Answer

A storage resource in the cluster provisioned independently of Pod lifecycle

Answer

PVs are storage resources that exist beyond Pod lifecycle, ensuring data persistence even when Pods are destroyed and recreated.

(CKA) Certified Kubernetes Associate Practice Test

(CKA) Certified Kubernetes Associate Practice Test

CKA Cluster Architecture