Kubernetes Practice Test

Question 1

In Kubernetes, which of the following key value stores is used as the backup store for all cluster data?

Accepted Answer

etcd

Answer

In Kubernetes, etcd is the distributed key-value store that serves as the primary backend for all cluster data. It stores the entire configuration, state, and metadata of the Kubernetes cluster, making it a critical component for maintaining the cluster's desired state and ensuring high availability.

Question 2

In Kubernetes, which of the following watches for newly formed pods with no node assigned and selects a node for them to run on?

Accepted Answer

kube-scheduler

Answer

The kube-scheduler is a crucial control plane component in Kubernetes responsible for assigning newly created Pods to appropriate nodes. It continuously watches for Pods that have no node assigned and selects the best node for them to run on, considering factors like resource requirements, hardware constraints, and policy constraints.

Question 3

In Kubernetes, for example, which components make global decisions about the cluster?

Accepted Answer

Master components

Answer

Master components, also known as Control Plane components, are the core parts of Kubernetes that make global decisions about the cluster. These components, including the API server, scheduler, controller manager, and etcd, manage the cluster's state, schedule workloads, and respond to cluster events, ensuring the desired state is maintained.

Question 4

In Kubernetes, which phase of the Pod refers to the Pod being bound to a node and all of the Containers being created?

Accepted Answer

Running

Answer

The 'Running' phase in Kubernetes indicates that a Pod has been successfully bound to a node, and all of its containers have been created. In this phase, at least one container is running, or is in the process of starting or restarting, signifying that the application within the Pod is active on a worker node.

Question 5

In Kubernetes, which of the following runs controllers?

Accepted Answer

kube-controller-manager

Answer

The kube-controller-manager is a control plane component that runs various controller processes. These controllers continuously monitor the shared state of the cluster through the API server and make changes to move the current state towards the desired state, managing resources like nodes, replication controllers, and endpoints.

Kubernetes Container Orchestration Practice Test

Kubernetes Container Orchestration Practice Test

Kubernetes Practice Test