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

Resource limits for a container in Kubernetes can be effectively set by specifying limits and requests in the pod definition. In Kubernetes, a pod definition usually includes resource requests and limits under the containers section.

When defining a container, you can specify how much CPU and memory resources are requested and capped. Requests indicate the minimum amount of resources that the Kubernetes scheduler will guarantee for the container, while limits set the maximum resources that the container can use. This mechanism helps in resource management and ensures that no single container can consume all the available resources on a node, which could otherwise negatively impact the performance of other containers running on that node.

The other options do not accurately reflect how resource limits can be set. Altering the container runtime configuration does not provide a method for setting limits on individual containers within a specific pod. Specifying limits in the service definition is incorrect because a service defines how to access a pod rather than its resource allocation. Editing the pod manifest file directly may seem plausible, but it lacks the specificity of including requests and limits in the resource definition. Only option D encapsulates the proper procedure within Kubernetes for defining resource constraints effectively.