ITGSS Certified DevOps Engineer Practice Test

Kubernetes clusters consist of which primary component types?

1. Pods and Services

2. Nodes and Containers

3. Controllers and Schedulers

4. Services and Deployments

The correct answer is: Nodes and Containers

The correct answer identifies nodes and containers as the primary component types of Kubernetes clusters. Nodes serve as the physical or virtual machines that provide the infrastructure required to run applications and workloads in a Kubernetes environment. Each node can contain multiple pods, which encapsulate one or more containers. Containers are the runtime instances of applications, packaged with their configuration and dependencies. Understanding the distinction between these components is crucial in a Kubernetes architecture. Nodes are responsible for hosting the pods, while containers run the actual applications. This relationship between nodes and containers highlights the fundamental structure of a Kubernetes cluster, emphasizing how resources are allocated and applications are managed across the distributed environment. Other options mention components that are indeed important to Kubernetes, such as services, deployments, and pods, but they do not encompass the primary components in the same foundational manner as nodes and containers. Pods and services relate more to how applications are accessed and managed on the cluster, while controllers and schedulers focus on workload management and orchestration, rather than the core structural elements of the clusters themselves.