Linux Foundation CKAD Exam Dumps

Get All Certified Kubernetes Application Developer Exam Questions with Validated Answers

CKAD Pack
Vendor: Linux Foundation
Exam Code: CKAD
Exam Name: Certified Kubernetes Application Developer
Exam Questions: 33
Last Updated: March 6, 2026
Related Certifications: Kubernetes Application Developer
Exam Tags: Intermediate Kubernetes Application DeveloperKubernetes Developers
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Free Linux Foundation CKAD Exam Actual Questions

Question No. 1

SIMULATION

You must connect to the correct host . Failure to do so may result in a zero score.

[candidate@base] $ ssh ckad00027

Task

A Deployment named app-deployment in namespace prod runs a web application port 0001

A Deployment named app-deployment in namespace prod runs a web application

on port 8081.

The Deployment 's manifest files can be found at

/home/candidate/spicy-pikachu/app-deployment.yaml

Modify the Deployment specifying a readiness probe using path /healthz .

Set initialDelaySeconds to 6 and periodSeconds to 3.

Show Answer Hide Answer
Correct Answer: A

Do this on ckad00027 and edit the given manifest file (that's what the task expects).

0) Connect to correct host

ssh ckad00027

1) Open the manifest and identify the container + port

cd /home/candidate/spicy-pikachu

ls -l

sed -n '1,200p' app-deployment.yaml

Confirm the container port is 8081 in the YAML (usually under ports:).

2) Edit the YAML to add a readinessProbe

Edit the file:

vi app-deployment.yaml

Inside the Deployment, locate:

spec:

template:

spec:

containers:

- name: ...

image: ...

Add this under the container (same indentation level as image, ports, etc.):

readinessProbe:

httpGet:

path: /healthz

port: 8081

initialDelaySeconds: 6

periodSeconds: 3

Notes:

Use port: 8081 (because the app runs on 8081).

Ensure indentation is correct (2 spaces per level commonly).

Save and exit.

3) Apply the updated manifest

kubectl apply -f /home/candidate/spicy-pikachu/app-deployment.yaml

4) Ensure the Deployment rolls out successfully

kubectl -n prod rollout status deploy app-deployment

5) Verify the readiness probe is set

Check the probe from the live object:

kubectl -n prod get deploy app-deployment -o jsonpath='{.spec.template.spec.containers[0].readinessProbe}{'\n'}'

And confirm pods are becoming Ready:

kubectl -n prod get pods -l app=app-deployment

If the label selector differs, just:

kubectl -n prod get pods

kubectl -n prod describe pod | sed -n '/Readiness:/,/Conditions:/p'

That completes the task: readiness probe on /healthz, initialDelaySeconds: 6, periodSeconds: 3.


Question No. 2

SIMULATION

Context

As a Kubernetes application developer you will often find yourself needing to update a running application.

Task

Please complete the following:

* Update the app deployment in the kdpd00202 namespace with a maxSurge of 5% and a maxUnavailable of 2%

* Perform a rolling update of the web1 deployment, changing the Ifccncf/ngmx image version to 1.13

* Roll back the app deployment to the previous version

Show Answer Hide Answer
Correct Answer: A

Solution:


Question No. 3

SIMULATION

Context

It is always useful to look at the resources your applications are consuming in a cluster.

Task

* From the pods running in namespace cpu-stress , write the name only of the pod that is consuming the most CPU to file /opt/KDOBG030l/pod.txt, which has already been created.

Show Answer Hide Answer
Correct Answer: A

Solution:


Question No. 4

SIMULATION

You must connect to the correct host . Failure to do so may result in a zero score.

[candidate@base] $ ssh ckad00029

Task

Modify the existing Deployment named store-deployment, running in namespace

grubworm, so that its containers

run with user ID 10000 and

have the NET_BIND_SERVICE capability added

The store-deployment 's manifest file Click to copy

/home/candidate/daring-moccasin/store-deplovment.vaml

Show Answer Hide Answer
Correct Answer: A

ssh ckad00029

You must modify the existing Deployment store-deployment in namespace grubworm so that its containers:

run as user ID 10000

have Linux capability NET_BIND_SERVICE added

And you're told to use the manifest file at:

/home/candidate/daring-moccasin/store-deplovment.vaml (note: the filename looks misspelled; follow it exactly on the host)

1) Inspect the current Deployment and locate the manifest file

kubectl -n grubworm get deploy store-deployment

ls -l /home/candidate/daring-moccasin/

Open the manifest:

sed -n '1,200p' '/home/candidate/daring-moccasin/store-deplovment.vaml'

2) Edit the manifest to add SecurityContext

Edit the file:

vi '/home/candidate/daring-moccasin/store-deplovment.vaml'

2.1 Set Pod-level runAsUser = 10000

Under:

spec.template.spec add:

securityContext:

runAsUser: 10000

2.2 Add NET_BIND_SERVICE capability at container-level

Under the container spec (for each container in containers:), add:

securityContext:

capabilities:

add: ['NET_BIND_SERVICE']

A complete example of what it should look like (mind indentation):

apiVersion: apps/v1

kind: Deployment

metadata:

name: store-deployment

namespace: grubworm

spec:

template:

spec:

securityContext:

runAsUser: 10000

containers:

- name: store

image: someimage

securityContext:

capabilities:

add: ['NET_BIND_SERVICE']

Important notes:

runAsUser can be set at Pod level (applies to all containers) or per-container. Pod-level is cleanest if all containers should run as 10000.

Capabilities must be set per-container (that's where Kubernetes supports it).

Save and exit.

3) Apply the updated manifest

kubectl apply -f '/home/candidate/daring-moccasin/store-deplovment.vaml'

4) Ensure the Deployment rolls out

kubectl -n grubworm rollout status deploy store-deployment

5) Verify the settings are in effect

Check the rendered pod template:

kubectl -n grubworm get deploy store-deployment -o jsonpath='{.spec.template.spec.securityContext}{'\n'}'

kubectl -n grubworm get deploy store-deployment -o jsonpath='{.spec.template.spec.containers[0].securityContext}{'\n'}'

Verify on a running pod:

kubectl -n grubworm get pods

kubectl -n grubworm describe pod | sed -n '/Security Context:/,/Containers:/p'

kubectl -n grubworm describe pod | sed -n '/Containers:/,/Conditions:/p'

If there are multiple containers

Repeat the container-level securityContext.capabilities.add block for each container under spec.template.spec.containers.


Question No. 5

SIMULATION

Task:

1- Update the Propertunel scaling configuration of the Deployment web1 in the ckad00015 namespace setting maxSurge to 2 and maxUnavailable to 59

2- Update the web1 Deployment to use version tag 1.13.7 for the Ifconf/nginx container image.

3- Perform a rollback of the web1 Deployment to its previous version

Show Answer Hide Answer
Correct Answer: A

Solution:


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