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The CKA certification exam consists of a performance-based test that requires candidates to demonstrate their ability to perform Kubernetes administrative tasks in a real-world environment. CKA exam is conducted online and features a set of challenging scenarios that simulate common Kubernetes administration challenges. Candidates have two hours to complete the exam and must score at least 74% to pass. CKA Exam is designed to test the candidate's knowledge of Kubernetes concepts and best practices, as well as their ability to troubleshoot issues and perform complex tasks.

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The CKA Exam is designed to test the candidate's ability to deploy, configure, and manage Kubernetes clusters. CKA exam is a hands-on, performance-based test where the candidate must complete a set of tasks within a given time frame. The tasks include creating and managing clusters, pods, services, and deployments, troubleshooting issues, and securing the Kubernetes environment.

Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q27-Q32):

NEW QUESTION # 27
Create a snapshot of the etcd instance running at https://127.0.0.1:2379, saving the snapshot to the file path
/srv/data/etcd-snapshot.db.
The following TLS certificates/key are supplied for connecting to the server with etcdctl:
* CA certificate: /opt/KUCM00302/ca.crt
* Client certificate: /opt/KUCM00302/etcd-client.crt
* Client key: Topt/KUCM00302/etcd-client.key

Answer:

Explanation:
See the solution below.
Explanation
solution

NEW QUESTION # 28
Create a pod with init container which create a file "test.txt"
in "workdir" directory. Main container should check a file
"test.txt" exists and execute sleep 9999 if the file exists.

A. // create an initial yaml file with this
kubectl run init-cont-pod --image=alpine --restart=Never --dry-run -o
yaml > init-cont-pod.yaml
// edit the yml as below and create it
vim init-cont-pod.yaml
apiVersion: v1
kind: Pod
metadata:
name: init-cont-pod
labels:
app: myapp
spec:
volumes:
- name: test-volume
emptyDir: {}
containers:
- name: main-container
image: busybox:1.28
command: ['sh', '-c', 'if [ -f /workdir/test.txt ]; then sleep
9999; fi']
volumeMounts:
- name: test-volume
mountPath: /workdir
initContainers:
- name: init-myservice
image: busybox:1.28
command: ['sh', '-c', "mkdir /workdir; echo >
/workdir/test.txt"]
volumeMounts:
- name: test-volume
mountPath: /workdir
// Create the pod
kubectl apply -f init-cont-pod.yaml
kubectl get pods
// Check Events by doing
kubectl describe po init-cont-pod
Init Containers:
init-myservice:
Container ID:
docker://ebdbf5fad1c95111d9b0e0e2e743c2e347c81b8d4eb5abcccdfe1dd74524
0d4f
Image: busybox:1.28
Image ID: dockerpullable://busybox@sha256:141c253bc4c3fd0a201d32dc1f493bcf3fff003b6df
416dea4f41046e0f37d47
Port: <none>
Host Port: <none>
Command:
sh
-c
mkdir /workdir; echo > /workdir/test.txt
State: Terminated Reason: Completed
B. // create an initial yaml file with this
kubectl run init-cont-pod --image=alpine --restart=Never --dry-run -o
yaml > init-cont-pod.yaml
// edit the yml as below and create it
vim init-cont-pod.yaml
apiVersion: v1
kind: Pod
metadata:
name: init-cont-pod
labels:
app: myapp
spec:
volumes:
- name: test-volume
emptyDir: {}
containers:
- name: main-container
image: busybox:1.28
command: ['sh', '-c', 'if [ -f /workdir/test.txt ]; then sleep
9999; fi']
volumeMounts:
image: busybox:1.28
command: ['sh', '-c', "mkdir /workdir; echo >
/workdir/test.txt"]
volumeMounts:
- name: test-volume
mountPath: /workdir
// Create the pod
kubectl apply -f init-cont-pod.yaml
kubectl get pods
// Check Events by doing
kubectl describe po init-cont-pod
Init Containers:
init-myservice:
Container ID:
docker://ebdbf5fad1c95111d9b0e0e2e743c2e347c81b8d4eb5abcccdfe1dd74524
0d4f
Image: busybox:1.28
Image ID: dockerpullable://busybox@sha256:141c253bc4c3fd0a201d32dc1f493bcf3fff003b6df
416dea4f41046e0f37d47
Port: <none>
Host Port: <none>
Command:
sh
-c
mkdir /workdir; echo > /workdir/test.txt
State: Terminated Reason: Completed

Answer: A

NEW QUESTION # 29
Get the memory and CPU usage of all the pods and find out top 3 pods which have the highest usage and put them into the cpuusage.txt file

A. // Get the top 3 pods
kubectl top pod --all-namespaces | sort --reverse --key 3 --
numeric | head -8
// putting into file
kubectl top pod --all-namespaces | sort --reverse --key 6 --
numeric | head -6 > cpu-usage.txt
// verify
cat cpu-usage.txt
B. // Get the top 3 pods
kubectl top pod --all-namespaces | sort --reverse --key 3 --
numeric | head -3
// putting into file
kubectl top pod --all-namespaces | sort --reverse --key 3 --
numeric | head -3 > cpu-usage.txt
// verify
cat cpu-usage.txt

Answer: B

NEW QUESTION # 30
You must connect to the correct host.
Failure to do so may result in a zero score.
[candidate@base] $ ssh Cka000055
Task
Verify the cert-manager application which has been deployed to your cluster .
Using kubectl, create a list of all cert-manager Custom Resource Definitions (CRDs ) and save it to ~/resources.yaml .
You must use kubectl 's default output format.
Do not set an output format.
Failure to do so will result in a reduced score.
Using kubectl, extract the documentation for the subject specification field of the Certificate Custom Resource and save it to ~/subject.yaml.

Answer:

Explanation:
Task Summary
You need to:
* SSH into the correct node: cka000055
* Use kubectl to list all cert-manager CRDs, and save that list to ~/resources.yaml
* Do not use any output format flags like -o yaml
* Extract the documentation for the spec.subject field of the Certificate custom resource and save it to ~
/subject.yaml
Step-by-Step Instructions
Step 1: SSH into the node
ssh cka000055
Step 2: List cert-manager CRDs and save to a file
First, identify all cert-manager CRDs:
kubectl get crds | grep cert-manager
Then extract them without specifying an output format:
kubectl get crds | grep cert-manager | awk '{print $1}' | xargs kubectl get crd > ~/resources.yaml This saves the default kubectl get output to the required file without formatting flags.
Step 3: Get documentation for spec.subject in the Certificate CRD
Run the following command:
kubectl explain certificate.spec.subject > ~/subject.yaml
This extracts the field documentation and saves it to the specified file.
If you're not sure of the resource, verify it exists:
kubectl get crd certificates.cert-manager.io
Final Command Summary
ssh cka000055
kubectl get crds | grep cert-manager | awk '{print $1}' | xargs kubectl get crd > ~/resources.yaml kubectl explain certificate.spec.subject > ~/subject.yaml

NEW QUESTION # 31
You have two Kubernetes clusters, 'cluster 1' and 'cluster2, and you need to establish a connection between the two clusters using a NetworkPolicy. You want to allow all traffic from pods in 'cluster 1' to pods in 'cluster? , and you need to implement this using an Ingress rule. What steps are required to configure this connection?

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1 . Create a NetworkPolicy in 'cluster?
- Create a NetworkPolicy in 'cluster? that allows all traffic from pods in 'cluster 1'
- Code:

2. Create an Ingress in 'cluster2: - Create an Ingress in 'cluster? that routes traffic from 'clusterl' to the appropriate services or pods in cluster?. - Code:

3. Apply the Configurations: - Apply the NetworkPolicy and Ingress resources to the respective clusters using 'kubectl apply -f networkpolicy.yaml' and 'kubectl apply -f ingress.yaml'.

NEW QUESTION # 32
......

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