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| Section | Weight | Objectives |
|---|---|---|
| Cluster Architecture, Installation & Configuration | 25% | - Manage role based access control (RBAC) - Prepare underlying infrastructure for installing a Kubernetes cluster - Implement and configure a highly-available control plane - Use Helm and Kustomize to install cluster components - Understand extension interfaces (CNI, CSI, CRI, etc.) - Manage the lifecycle of Kubernetes clusters - Understand CRDs, install and configure operators - Create and manage Kubernetes clusters using kubeadm |
| Workloads & Scheduling | 15% | - Understand Static Pods - Understand resource limits and requests - Use label selectors to schedule Pods - Use ConfigMaps and Secrets to configure applications - Understand how scheduler works - Understand how to run multiple schedulers and configure scheduler policies - Understand Deployments and rolling update/rollback - Understand DaemonSets |
| Troubleshooting | 30% | - Understand how to monitor applications - Troubleshoot cluster component failure - Troubleshoot application failure - Troubleshoot networking - Manage container stdout & stderr logs - Evaluate cluster and node logging |
| Services & Networking | 20% | - Use the Gateway API to manage Ingress traffic - Use ClusterIP, NodePort, LoadBalancer service types and endpoints - Understand connectivity between Pods - Define and enforce Network Policies - Know how to use Ingress controllers and Ingress resources - Understand and use CoreDNS |
| Storage | 10% | - Understand how to configure applications with persistent storage - Understand volume mode, access modes and reclaim policies - Understand persistent volume claims primitive - Understand Storage Classes and Persistent Volumes |
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NEW QUESTION # 45
You are deploying a highly sensitive application to a Kubernetes cluster. You need to configure CoreDNS to enforce strict access control and ensure that only authorized clients can perform DNS lookups.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Enable DNSSEC Validation:
- Configure CoreDNS to validate DNSSEC signatures to ensure that DNS responses are not tampered with.
2. Use Network Policies: - Implement network policies to restrict access to the CoreDNS service. Only authorized pods should be allowed to send DNS queries to CoreDNS.
3. Use RBAC for Access Control: - Implement Role-Based Access Control (RBAC) to restrict access to CoreDNS resources. Only authorized users or service accounts should be able to modify the CoreDNS configuration or access its logs.
4. Use Secure DNS: - Enable DNS over TLS (DOT) or DNS over HTTPS (DOH) to secure communication between pods and CoreDNS. This will prevent eavesdropping and data tampering.
NEW QUESTION # 46
You have a Kubernetes cluster with a variety of namespaces: 'default', 'development', 'production', and 'testing'. You need to implement granular role-based access control (RBAC) to ensure that:
- Developers in the 'development' namespace can only create and delete pods within that namespace.
- Developers in the 'testing' namespace can only create, delete and scale pods within that namespace.
- Production team members in the 'production' namespace can only view pods and deployments.
Provide the necessary YAML files for the Role, RoleBinding, and ServiceAccount objects to enforce these permissions. Ensure that the service accounts are bound to specific namespaces and that the RoleBindings are correctly defined to grant the necessary access to each group.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1 . Create a ServiceAccount for Developers in the 'development' namespace:
2. Create a ServiceAccount for Developers in the 'testing' namespace:
3. Create a ServiceAccount for Production Team members in the 'production' namespace:
4. Create a Role for Developers in the 'development' namespace:
5. Create a Role for Developers in the 'testing' namespace:
6. Create a Role for Production Team members in the 'production' namespace:
7. Create a RoleBinding for Developers in the 'development' namespace:
8. Create a RoleBinding for Developers in the 'testing' namespace:
9. Create a RoleBinding for Production Team members in the 'production' namespace:
10. Apply the YAML files using 'kubectl apply -f' ,
NEW QUESTION # 47
Create a deployment as follows:
Name: nginx-random
Exposed via a service nginx-random
Ensure that the service & pod are accessible via their respective DNS records The container(s) within any pod(s) running as a part of this deployment should use the nginx Image Next, use the utility nslookup to look up the DNS records of the service & pod and write the output to
/opt/KUNW00601/service.dns and /opt/KUNW00601/pod.dns respectively.
Answer:
Explanation:
See the solution below.
Explanation
Solution:
F:\Work\Data Entry Work\Data Entry\20200827\CKA\17 C.JPG
F:\Work\Data Entry Work\Data Entry\20200827\CKA\17 D.JPG
F:\Work\Data Entry Work\Data Entry\20200827\CKA\17 E.JPG
NEW QUESTION # 48
List all the pods sorted by name
Answer:
Explanation:
kubectl get pods --sort-by=.metadata.name
NEW QUESTION # 49
Create a redis pod named "test-redis" and exec into that pod and create a file named "test-file.txt" with the text 'This is called the test file' in the path /data/redis and open another tab and exec again with the same pod and verifies file exist in the same path.
Answer: A
NEW QUESTION # 50
......
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