K8S

Question 1

What is Kubernetes?

Answer 1

An open-source platform for automating the deployment, scaling, and management of containerized applications.

Question 2

True or False: Kubernetes can manage both containerized and non-containerized applications.

Answer 2

False

Question 3

Fill in the blank: Kubernetes is often abbreviated as ____.

Answer 3

K8s

Question 4

What is a Pod in Kubernetes?

Answer 4

The smallest deployable unit that can be created and managed in Kubernetes, consisting of one or more containers.

Question 5

What is a Node in Kubernetes?

Answer 5

A worker machine in Kubernetes, which can be a physical or virtual machine.

Question 6

What is the purpose of a Kubernetes Service?

Answer 6

To expose an application running on a set of Pods as a network service.

Question 7

Which component of Kubernetes is responsible for maintaining the desired state of the cluster?

Answer 7

Kubernetes Controller Manager

Question 8

True or False: A ReplicaSet ensures that a specified number of pod replicas are running at any given time.

Answer 8

True

Question 9

What is the function of a Kubernetes Deployment?

Answer 9

To manage the deployment of stateless applications, allowing for updates and rollbacks.

Question 10

What does the term ‘orchestration’ refer to in the context of Kubernetes?

Answer 10

The automated management of containerized applications and services.

Question 11

What is a Namespace in Kubernetes?

Answer 11

A way to divide cluster resources between multiple users or applications.

Question 12

What is the role of the Kubernetes API Server?

Answer 12

To serve as the front-end for the Kubernetes control plane.

Question 13

Fill in the blank: Kubernetes uses ____ to manage configuration data.

Answer 13

ConfigMaps

Question 14

What is a StatefulSet in Kubernetes?

Answer 14

A controller that manages the deployment and scaling of a set of Pods, providing guarantees about the ordering and uniqueness of these Pods.

Question 15

True or False: Kubernetes supports only Linux-based containers.

Answer 15

False

Question 16

What is Helm in the context of Kubernetes?

Answer 16

A package manager for Kubernetes that helps in defining, installing, and upgrading applications.

Question 17

What is the purpose of a Kubernetes Volume?

Answer 17

To provide persistent storage for Pods.

Question 18

What is the key benefit of using Ingress in Kubernetes?

Answer 18

To manage external access to services, typically HTTP.

Question 19

What is the function of a DaemonSet in Kubernetes?

Answer 19

To ensure that a copy of a Pod runs on all or some Nodes in the cluster.

Question 20

Which tool would you use to manage Kubernetes resources from the command line?

Answer 20

kubectl

Question 21

What is a Job in Kubernetes?

Answer 21

A controller that creates one or more Pods and ensures that a specified number of them successfully terminate.

Question 22

True or False: Kubernetes can automatically scale applications based on load.

Answer 22

True

Question 23

What is the purpose of a PersistentVolume in Kubernetes?

Answer 23

To provide a piece of storage in the cluster that has a lifecycle independent of any individual Pod.

Question 24

Fill in the blank: Kubernetes uses ____ to define the desired state of applications.

Answer 24

YAML or JSON manifests

Question 25

What is the main function of the Scheduler in Kubernetes?

Answer 25

To assign Pods to Nodes based on resource availability.

Question 26

What is a ConfigMap used for in Kubernetes?

Answer 26

To store configuration data in key-value pairs.

Question 27

What does the term 'self-healing' refer to in Kubernetes?

Answer 27

The ability of the system to automatically replace failed containers.

Question 28

What is a Horizontal Pod Autoscaler?

Answer 28

A Kubernetes resource that automatically scales the number of Pods in a deployment based on CPU utilization or other select metrics.

Question 29

True or False: Kubernetes requires a specific operating system to run.

Answer 29

False

Question 30

What is the purpose of a Secret in Kubernetes?

Answer 30

To store sensitive information, such as passwords or tokens.

Question 31

What is the primary purpose of the Kubernetes Control Plane?

Answer 31

To manage the Kubernetes cluster and its state.

Question 32

What does 'kubectl apply' do?

Answer 32

It updates or creates resources in a Kubernetes cluster based on the provided configuration files.

Question 33

What is a NodePort service in Kubernetes?

Answer 33

A service type that exposes the application on a static port on each Node's IP address.

Question 34

Fill in the blank: The Kubernetes ____ is responsible for the overall management of the cluster.

Answer 34

Control Plane

Question 35

What is the significance of labels in Kubernetes?

Answer 35

Labels are key-value pairs that are used to organize and select subsets of objects.

Question 36

What is the difference between a Deployment and a StatefulSet?

Answer 36

Deployment manages stateless applications, while StatefulSet manages stateful applications with unique identities.

Question 37

True or False: Kubernetes supports multi-cloud deployments.

Answer 37

True

Question 38

What does the term 'Kubernetes Operator' refer to?

Answer 38

A method of packaging, deploying, and managing a Kubernetes application.

Question 39

What is a CRD in Kubernetes?

Answer 39

Custom Resource Definition, a way to extend Kubernetes capabilities by adding custom resources.

Question 40

What is the purpose of a NetworkPolicy in Kubernetes?

Answer 40

To control the traffic between Pods based on rules.

Question 41

What is the role of the kube-proxy in Kubernetes?

Answer 41

To maintain network rules on Nodes and enable communication to Pods.

Question 42

What does 'kubectl get pods' do?

Answer 42

It lists all the Pods running in the current namespace.

Question 43

Fill in the blank: The Kubernetes ____ is responsible for managing the actual data storage.

Answer 43

etcd

Question 44

What is a ClusterIP service in Kubernetes?

Answer 44

A service type that exposes the application on a cluster-internal IP.

Question 45

What does a Helm Chart contain?

Answer 45

A collection of files that describe a related set of Kubernetes resources.

Question 46

True or False: Kubernetes can run without Docker.

Answer 46

True

Question 47

What is the main benefit of using Kubernetes?

Answer 47

It automates the deployment, scaling, and management of containerized applications.

Question 48

What is a Taint in Kubernetes?

Answer 48

A property of a Node that prevents Pods from being scheduled unless they tolerate the taint.

Question 49

What is the purpose of the kubelet in Kubernetes?

Answer 49

To ensure that containers are running in a Pod and report their status to the API server.

Question 50

What does 'kubectl describe pod ' do?

Answer 50

It provides detailed information about a specific Pod.

Question 51

What is the function of the etcd database in Kubernetes?

Answer 51

To store all the cluster data and configuration.

Question 52

Fill in the blank: A ____ is a powerful way to manage complex applications in Kubernetes.

Answer 52

Helm Chart

Question 53

What is a Sidecar container?

Answer 53

A container that runs alongside the main application container in a Pod, providing additional functionality.

Question 54

True or False: Kubernetes allows for zero-downtime deployments.

Answer 54

True

Question 55

What is a ResourceQuota in Kubernetes?

Answer 55

A limit that restricts the amount of resources a namespace can consume.

Question 56

What is the purpose of a ServiceAccount in Kubernetes?

Answer 56

To provide an identity for processes that run in a Pod.

Question 57

What is the function of the Admission Controller in Kubernetes?

Answer 57

To intercept requests to the API server before persistence to enforce policies.

Question 58

What is the difference between 'kubectl apply' and 'kubectl create'?

Answer 58

'kubectl apply' updates resources, while 'kubectl create' only creates new resources.

Question 59

What is the significance of the kube-controller-manager?

Answer 59

It runs controller processes that regulate the state of the cluster.

Question 60

What is the purpose of the Kubernetes Dashboard?

Answer 60

To provide a web-based user interface for managing Kubernetes clusters.

Question 61

What does a Kubernetes Ingress resource do?

Answer 61

It manages external access to services, typically HTTP.

Question 62

What is the main function of a Kubernetes VolumeClaim?

Answer 62

To request storage resources for a Pod.

Question 63

True or False: Kubernetes can automatically recover from node failures.

Answer 63

True

Question 64

What is a Helm Release?

Answer 64

An instance of a chart running in a Kubernetes cluster.

Question 65

What is the role of the Kubernetes API Aggregator?

Answer 65

To allow the API server to proxy requests to other API servers.

Question 66

What is a PodDisruptionBudget?

Answer 66

A policy that defines the minimum number of Pods that must be available during voluntary disruptions.

Question 67

What is the purpose of a NetworkPolicy in Kubernetes?

Answer 67

To control the communication between Pods.

Question 68

What does 'kubectl logs ' do?

Answer 68

It retrieves logs from a specific Pod.

Question 69

Fill in the blank: Kubernetes uses ____ to manage container orchestration.

Answer 69

cgroups and namespaces

Question 70

What is the role of a NodeSelector in Kubernetes?

Answer 70

To constrain which Nodes a Pod can be scheduled on.

Question 71

True or False: Kubernetes supports rolling updates.

Answer 71

True