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Linux Foundation CKA Exam Overview:

Certification Vendor:Linux Foundation
Exam Name:Certified Kubernetes Administrator (CKA) Program Exam
Exam Number:CKA
Exam Price:$445 USD
Real Exam Qty:15-20
Available Languages:English
Passing Score:66%
Exam Duration:120 minutes
Certificate Validity Period:2 years
Exam Format:Performance-based
Related Certifications:Certified Kubernetes Application Developer (CKAD)
Certified Kubernetes Security Specialist (CKS)
Sample Questions:Linux Foundation CKA Sample Questions
Exam Way:Online, proctored, performance-based exam. Candidates solve problems from a command line.
Pre Condition:No prerequisites required. Candidates should have a conceptual and practical understanding of Kubernetes components and native objects.
Official Syllabus URL:https://www.cncf.io/training/certification/cka/

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The CKA certification is recognized globally and is highly valued by organizations that use Kubernetes in their production environments. Certified Kubernetes Administrator (CKA) Program Exam certification provides IT professionals with a competitive edge in the job market and opens up new career opportunities. The Linux Foundation offers comprehensive training and preparation materials to help candidates prepare for the CKA Certification Exam. The training includes hands-on labs, online courses, and study materials that cover all the topics and skills required for the exam.

Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q40-Q45):

NEW QUESTION # 40
Check to see how many worker nodes are ready (not including nodes taintedNoSchedule) and write the number to/opt/KUCC00104/kucc00104.txt.

Answer:

Explanation:
See the solution below.
Explanation
solution


NEW QUESTION # 41
Your organization uses a private DNS server for internal services and requires all Kubernetes pods to resolve names against this DNS server. You need to configure CoreDNS to forward all DNS requests to this private server.

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1 . Configure CoreDNS with Forwarding:
- In the CoreDNS ConfigMap, configure the 'forward' plugin to forward all DNS requests to your private DNS server.

2. Test DNS Resolution: - Use the 'nslookup' command from a pod in your cluster to test DNS resolution for internal services. - The requests should be forwarded to the private DNS server, and the corresponding records should be returned.


NEW QUESTION # 42
Get the DNS records for the service and pods for the deployment redis and the put the value in /tmp/dnsrecordpod and /tmp/dnsrecord-service

Answer: B


NEW QUESTION # 43
You must connect to the correct host.
Failure to do so may result in a zero score.
[candidate@base] $ ssh Cka000056
Task
Review and apply the appropriate NetworkPolicy from the provided YAML samples.
Ensure that the chosen NetworkPolicy is not overly permissive, but allows communication between the frontend and backend Deployments, which run in the frontend and backend namespaces respectively.
First, analyze the frontend and backend Deployments to determine the specific requirements for the NetworkPolicy that needs to be applied.
Next, examine the NetworkPolicy YAML samples located in the ~/netpol folder.
Failure to comply may result in a reduced score.
Do not delete or modify the provided samples. Only apply one of them.
Finally, apply the NetworkPolicy that enables communication between the frontend and backend Deployments, without being overly permissive.

Answer:

Explanation:
Task Summary
* Connect to host cka000056
* Review existing frontend and backend Deployments
* Choose one correct NetworkPolicy from the ~/netpol directory
* The policy must:
* Allow traffic only from the frontend Deployment to the backend Deployment
* Avoid being overly permissive
* Apply the correct NetworkPolicy without modifying any sample files
Step-by-Step Instructions
Step 1: SSH into the correct node
ssh cka000056
Step 2: Inspect the frontend Deployment
Check the labels used in the frontend Deployment:
kubectl get deployment -n frontend -o yaml
Look under metadata.labels or spec.template.metadata.labels. Note the app or similar label (e.g., app:
frontend).
Step 3: Inspect the backend Deployment
kubectl get deployment -n backend -o yaml
Again, find the labels assigned to the pods (e.g., app: backend).
Step 4: List and review the provided NetworkPolicies
List the available files:
ls ~/netpol
Check the contents of each policy file:
cat ~/netpol/<file-name>.yaml
Look for a policy that:
* Has kind: NetworkPolicy
* Applies to the backend namespace
* Uses a podSelector that matches the backend pods
* Includes an ingress.from rule that references the frontend namespace using a namespaceSelector (and optionally a podSelector)
* Does not allow traffic from all namespaces or all pods
Here's what to look for in a good match:
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: allow-frontend-to-backend
namespace: backend
spec:
podSelector:
matchLabels:
app: backend
ingress:
- from:
- namespaceSelector:
matchLabels:
name: frontend
Even better if the policy includes:
- namespaceSelector:
matchLabels:
name: frontend
podSelector:
matchLabels:
app: frontend
This limits access to pods in the frontend namespace with a specific label.
Step 5: Apply the correct NetworkPolicy
Once you've identified the best match, apply it:
kubectl apply -f ~/netpol/<chosen-file>.yaml
Apply only one file. Do not alter or delete any existing sample.
ssh cka000056
kubectl get deployment -n frontend -o yaml
kubectl get deployment -n backend -o yaml
ls ~/netpol
cat ~/netpol/*.yaml # Review carefully
kubectl apply -f ~/netpol/<chosen-file>.yaml
Command Summary
ssh cka000056
kubectl get deployment -n frontend -o yaml
kubectl get deployment -n backend -o yaml
ls ~/netpol
cat ~/netpol/*.yaml # Review carefully
kubectl apply -f ~/netpol/<chosen-file>.yaml


NEW QUESTION # 44
Pause the rollout of the deployment

Answer:

Explanation:
kubectl rollout pause deploy webapp


NEW QUESTION # 45
......

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