Certified Kubernetes Application Developer (CKAD) Practice Test 2026 - Free CKAD Practice Questions and Comprehensive Study Guide

Using a Service in Kubernetes serves the primary purpose of exposing an application running on a set of pods. In Kubernetes, pods can be dynamically created and destroyed, making it challenging to access them directly. A Service provides a consistent endpoint for communication with a group of pods, ensuring that even if the underlying pod instances change, the network interface remains stable.

When you create a Service, it sets up a way to load balance traffic to the pods, distributing the requests among them. This abstraction allows applications to send requests to the Service, which then routes those requests to the corresponding pods based on their labels. Consequently, Services facilitate seamless communication between different components of your Kubernetes application, enabling scalability, resilience, and a more manageable system overall.

The other options refer to features that are handled differently within the Kubernetes ecosystem. Configuration data storage is managed through ConfigMaps and Secrets, application state maintenance is the role of StatefulSets and Deployments, while scheduling jobs is accomplished using CronJobs. Therefore, using a Service specifically addresses the need for stable and reliable access to applications running across multiple pods.