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[General] Exam CKA Simulator Free, CKA Frequent Updates

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【General】 Exam CKA Simulator Free, CKA Frequent Updates

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The CKA Certification Exam is a rigorous, performance-based assessment designed to evaluate an individual's knowledge and ability to install, configure, and manage Kubernetes clusters. CKA exam is conducted in a live, lab-based environment, which ensures that candidates have hands-on experience with Kubernetes and are able to demonstrate their proficiency in a real-world setting.
Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q21-Q26):NEW QUESTION # 21
You have a Deployment running an application that requires a specific network policy. How can you define a network policy that allows only traffic from Pods belonging to the same namespace as the application and denies all other traffic?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Network Policy Definition:

2. Explanation: - 'apiVersion: networking.k8s.io/v1 ' : Specifies the API version for NetworkPolicy resources. - 'kind: NetworkPolicy': Specifies that this is a NetworkPolicy resource. - 'metadata.name: allow-same-namespace': Sets the name of the NetworkPolicy. - 'metadata.namespace: Specifies the namespace where the NetworkPolicy is applied. Replace " with the actual namespace where your deployment is running. - 'spec.podSelector: {F: This empty podSelector means the NetworkPolicy applies to all Pods in the namespace. - 'spec.ingress': This section defines the rules for incoming traffic. - 'spec.ingress.from.podSelector: {F: This allows traffic from any Pods within the same namespace. 3. How it works: - This NetworkPolicy allows incoming traffic only from Pods within the same namespace where the Deployment is running. It explicitly denies all other traffic, effectively isolating the application to communication only within its namespace. 4. Implementation: - Apply the YAML using 'kubectl apply -f allow-same-namespace.yaml' 5. Verification: After applying the NetworkPolicy, test the communication between Pods within the same namespace and Pods in other namespaces. You should observe that the NetworkPolicy successfully enforces the defined restrictions.

NEW QUESTION # 22
Ensure a single instance of pod nginx is running on each node of the Kubernetes cluster where nginx also represents the Image name which has to be used. Do not override any taints currently in place.
Use DaemonSet to complete this task and use ds-kusc00201 as DaemonSet name.
Answer:
Explanation:
solution





NEW QUESTION # 23
Pause the rollout of the deployment
Answer:
Explanation:
kubectl rollout pause deploy webapp

NEW QUESTION # 24
Create a deployment spec file that will:
* Launch 7 replicas of the nginx Image with the labelapp_runtime_stage=dev
* deployment name: kual00201
Save a copy of this spec file to /opt/KUAL00201/spec_deployment.yaml
(or /opt/KUAL00201/spec_deployment.json).
When you are done, clean up (delete) any new Kubernetes API object that you produced during this task.
Answer:
Explanation:
See the solution below.
Explanation
solution



NEW QUESTION # 25
You have a complex application with multiple services running in a Kubernetes cluster. Some services communicate with each other over the cluster network, while others need to access external services over the internet. You need to configure CoreDNS to handle both internal and external DNS resolution in a secure and efficient manner.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Configure CoreDNS for Internal DNS:
- Create a CoreDNS ConfigMap named 'coredns' with the following configuration:
-

2. Configure CoreDNS for External DNS: - If you need to resolve external domains, you can use CoreDNS's 'forward' plugin to forward requests to external DNS servers. You can configure 'forward' in the Corefile, or use environment variables to dynamically set the upstream servers.

3. Configure Services with External Names: - If you need to access external services, configure their services in Kubernetes with the 'externalName' field.

4. Use Secure DNS: - Enable DNS over TLS (DOT) or DNS over HTTPS (DOH) in your CoreDNS configuration to ensure secure DNS resolution.

5. Test DNS Resolution: - Test DNS resolution for internal and external domains using the 'nslookup command from pods in your cluster.

NEW QUESTION # 26
......
Linux Foundation is one of the international top companies in the world providing wide products line which is applicable for most families and companies, and even closely related to people's daily life. Passing exam with CKA valid exam lab questions will be a key to success; will be new boost and will be important for candidates' career path. Linux Foundation offers all kinds of certifications, CKA valid exam lab questions will be a good choice.
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