Introduction to Kubernetes

What is YAML?

• It is a human-friendly, data serialization standard for all programming languages.

• It is a generic, read-only data structure for Kubernetes.

• It is a markup language dedicated to translating text formatting between sources.

• It is a markup language for managing application abstractions.

Why is a node managed by an external, master node?

• Because a Kubernetes node is running a traditional operating system package and therefore cannot run in an isolated sense.

• Because a node is a simple worker unit and does not have the resource to manage itself.

• Because if a node goes offline, there would be no way for it to communicate its status to other nodes.

• Because a node does not container the Kubernetes container runtime which stops it from reading its own metadata.

What is the role of the control plane in a cluster?

• To register the node it's running with the application programming interface (API) server.

• To make the cluster's current state match the desired state.

• To deploy and rune the application containers.

• To allocate the node the pods need to be created.

Whit is kube-scheduler, one of the kubernetes master components, responsible for?

• Allocating cloud resources defined whithin your cluster, such as creating storage voumes.

• Watching for newly created Pods, and determining which node they should run on.

• Invoking container on a cron schedule that the user defines.

• Load balancing between the worker nodes when an incoming request is received.

What is the purpose of a context element in a kubeconfig file?

• To group custom resources in a Kubernetes configuration.

• To group access parameters under a single name.

• To group authentication mapping in a Kubernetes cluster.

• To group public elements in a Kubernetes cluster.

The Master Node has which feature?

• Container manager.

• Image manager.

• etcd key/value store.

• Kubernetes controller.

What is the most basic type of resource in Kubernetes?

• Pod

• Deployment

• Service

• Container

Which of the following is NOT a feature provided by Kubernetes?

• Self-healing.

• Automate rollouts/rollbacks.

• Horizontal Scaling.

• Image Creation.

• Service Discovery.

Which types of nodes does Kubernetes supports?

• Admin and Task.

• Master and Worker.

• Cluster and Team.

• Master and Build.

Which Cluster Component stores the configuration in the Cluster Store?

• API Server

• kubectl

• etcd

• kubelet

• Controllers