ITGSS Certified DevOps Engineer Practice Test

What does a resource quota limit in a Kubernetes environment?

1. The capacity of resources granted to a namespace

2. The total number of containers in the cluster

3. The duration for which a service can run

4. The type of images that can be pulled

The correct answer is: The capacity of resources granted to a namespace

A resource quota in a Kubernetes environment defines the maximum amount of resources that can be allocated to a specific namespace. By setting these limits, Kubernetes helps manage the resources in the cluster more effectively and prevents any single namespace from monopolizing resources such as CPU, memory, and persistent storage. Enforcing resource quotas is particularly important in multi-tenant clusters where different teams or applications share the same resources. It allows administrators to ensure fair usage and maintain overall cluster performance. When a resource quota is applied, Kubernetes tracks the usage across all resources within the namespace and enforces the defined limits when users attempt to create new resources or increase the existing ones. This ensures that each team or application has the necessary resources to function while safeguarding against overconsumption that could degrade the performance for other workloads within the cluster. Therefore, the correct answer accurately captures the purpose of resource quotas in maintaining capacity limits within specific namespaces in a Kubernetes setup.