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KCNA Practice Exam — Free 251+ Questions

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Question 1

Cloud Native Application Delivery

Question 2

Cloud Native Architecture

Question 3

Kubernetes Fundamentals

Question 4

Kubernetes Fundamentals

Question 5

Cloud Native Application Delivery

Question 6

Container Orchestration

Question 7

Container Orchestration

Question 8

Kubernetes Fundamentals

Question 9

Kubernetes Fundamentals

Question 10

Kubernetes Fundamentals

Question 11

Kubernetes Fundamentals

Question 12

Cloud Native Architecture

Question 13

Kubernetes Fundamentals

Question 14

Kubernetes Fundamentals

Question 15

Kubernetes Fundamentals

Question 16

Kubernetes Fundamentals

Question 17

Kubernetes Fundamentals

Question 18

Container Orchestration

Question 19

Cloud Native Architecture

Question 20

Kubernetes Fundamentals

Question 21

Kubernetes Fundamentals

Question 22

Kubernetes Fundamentals

Question 23

Kubernetes Fundamentals

Question 24

Kubernetes Fundamentals

Question 25

Container Orchestration

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What is the core functionality of GitOps tools like Argo CD and Flux?

A They track production changes made by a human in a Git repository and generate a human-readable audit trail.
B They replace human operations with an agent that tracks Git commands.
C They automatically create pull requests when dependencies are outdated.
D They continuously compare the desired state in Git with the actual production state and notify or act upon differences.

What native runtime is Open Container Initiative (OCI) compliant?

A runC
B runV
C kata-containers
D gvisor

Which API object is the recommended way to run a scalable, stateless application on your cluster?

A ReplicaSet
B Deployment
C DaemonSet
D Pod

What is the purpose of the kubelet component within a Kubernetes cluster?

A A dashboard for Kubernetes Clusters that allows management and troubleshooting of applications.
B A network proxy that runs on each node in your cluster, implementing part of the Kubernetes Service concept.
C A component that watches for newly created Pods with no assigned node, and selects a node for them to run on.
D An agent that runs on each node in the cluster. It makes sure that containers are running in a Pod.

CI/CD stands for:

A Continuous Information / Continuous Development
B Continuous Integration / Continuous Development
C Cloud Integration / Cloud Development
D Continuous Integration / Continuous Deployment

In which framework do the developers no longer have to deal with capacity, deployments, scaling and fault tolerance, and OS?

A Docker Swam
B Kubernetes
C Mesos
D Serverless

Which of the following characteristics is associated with container orchestration?

A Application message distribution
B Dynamic scheduling
C Deploying application JAR files
D Virtual Machine distribution

Which Kubernetes resource uses immutable: true boolean field?

A Deployment
B Pod
C ConfigMap
D ReplicaSet

What are the most important resources to guarantee the performance of an etcd cluster?

A CPU and disk capacity.
B Network throughput and disk I/O.
C CPU and RAM memory.
D Network throughput and CPU.

Which kubernetes component is the smallest deployable unit of computing?

A StatefulSet
B Deployment
C Pod
D Container

Which of the following options includes valid API versions?

A alpha1v1, beta3v3, v2
B alpha1, beta3, v2
C v1alpha1, v2beta3, v2
D v1alpha1, v2beta3, 2.0

What components are common in a service mesh?

A tracing and log storage
B circuit breaking and Pod scheduling
C data plane and runtime plane
D service proxy and control plane

Which statement about Ingress is correct?

A Ingress provides a simple way to track network endpoints within a cluster.
B Ingress is a Service type like NodePort and ClusterIP.
C Ingress is a construct that allows you to specify how a Pod is allowed to communicate.
D Ingress exposes routes from outside the cluster to services in the cluster.

Which are the two primary modes for Service discovery within a Kubernetes cluster?

A Environment variables and DNS
B API Calls and LDAP
C Labels and Radius
D Selectors and DHCP

Which Kubernetes feature would you use to guard against split brain scenarios with your distributed application?

A Replication controllers
B Consensus protocols
C Rolling updates
D StatefulSet

Which of the following will view the snapshot of previously terminated ruby container logs from Pod web-1?

A kubectl logs -p -c ruby web-1
B kubectl logs -c ruby web-1
C kubectl logs -p ruby web-1
D kubectl logs -p -c web-1 ruby

Can a Kubernetes Service expose multiple ports?

A No, you can only expose one port per each Service.
B Yes, but you must specify an unambiguous name for each port.
C Yes, the only requirement is to use different port numbers.
D No, because the only port you can expose is port number 443.

Scenario: You have a Kubernetes cluster hosted in a public cloud provider. When trying to create a Service of type LoadBalancer, the external-ip is stuck in the "Pending" state. Which Kubernetes component is failing in this scenario?

A Cloud Controller Manager
B Load Balancer Manager
C Cloud Architecture Manager
D Cloud Load Balancer Manager

What are the characteristics for building every cloud-native application?

A Resiliency, Operability, Observability, Availability
B Resiliency, Containerd, Observability, Agility
C Kubernetes, Operability, Observability, Availability
D Resiliency, Agility, Operability, Observability

What are the initial namespaces that Kubernetes starts with?

A default, kube-system, kube-public, kube-node-lease
B default, system, kube-public
C kube-default, kube-system, kube-main, kube-node-lease
D kube-default, system, kube-main, kube-primary

Kubernetes supports multiple virtual clusters backed by the same physical cluster. These virtual clusters are called:

A namespaces
B containers
C hypervisors
D cgroups

Which of these components is part of the Kubernetes Control Plane?

A coredns
B cloud-controller-manager
C kube-proxy
D kubelet

Which of the following systems is NOT compatible with the CRI runtime interface standard?

A CRI-0
B dockershim
C systemd
D containerd

What is the role of a NetworkPolicy in Kubernetes?

A The ability to cryptic and obscure all traffic.
B The ability to classify the Pods as isolated and non isolated.
C The ability to prevent loopback or incoming host traffic.
D The ability to log network security events.

Which group of container runtimes provides additional sandboxed isolation and elevated security?

A rune, cgroups
B docker, containerd
C runsc, kata
D crun, cri-o

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