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| Section | Weight | Objectives |
|---|---|---|
| Supply Chain Security | 20% | - Secure CI/CD practices - Image scanning and verification |
| System Hardening | 15% | - Host security controls - Kernel and node security configuration |
| Cluster Setup | 15% | - Secure installation configuration - Hardening cluster components |
| Monitoring, Logging and Runtime Security | 15% | - Audit logging and monitoring - Runtime threat detection |
| Minimizing Microservice Vulnerabilities | 20% | - Pod security standards - Container isolation and security contexts |
| Cluster Hardening | 15% | - API server security - Authentication and authorization |
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NEW QUESTION # 30
You have a Kubernetes cluster with a Deployment named 'secure-app-deployment running a sensitive application. You want to ensure that only authorized users can access the application's pods and its sensitive data.
How would you use Role-Based Access Control (RBAC) to restrict access to the 'secure-app-deployment' and its resources?
Answer:
Explanation:
Solution (Step by Step) :
1. Create a Service Account for the Application:
2. Create a Role for the Service Account
NEW QUESTION # 31
Given an existing Pod named nginx-pod running in the namespace test-system, fetch the service-account-name used and put the content in /candidate/KSC00124.txt Create a new Role named dev-test-role in the namespace test-system, which can perform update operations, on resources of type namespaces.
Answer: A
NEW QUESTION # 32
You have a Kubernetes cluster running a web application deployment named 'web-app' that uses a service account called 'web-app-sa' The 'web-app-sa' has been granted the necessary RBAC roles and permissions to access specific resources in the cluster. You want to implement a strategy to prevent the 'web-app' deployment from using unauthorized service accounts that might be accidentally created or added to the deployment spec.
Answer:
Explanation:
Solution (Step by Step) :
1. Create a Service Account for the Web Applicatiom
- Create a Service Account YAML file named 'web-app-sa.yaml
2. Create a Role for the Service Account: - Create a Role YAML file named 'web-app-role.yaml to grant the necessary permissions to the 'web-app-sa':
3. Bind the Role to the Service Account: - Create a ROIeBinding YAML file named 'web-app-rolebinding.yamr to bind the 'web-app-roles to the 'web-app-sa':
4. Create tne Web Application Deployment: - Create a Deployment YAML file named 'web-app-deployment.yaml that specifies the 'web-app-sa' and any other necessary configuration:
5. Apply the Service Account, Role, RoleBinding, and Deployment: - Apply the YAML files using kubectl apply -f web-app-sa.yaml web-app-role.yaml web-app-rolebinding.yaml web-app-deployment.yaml 6. Test With unauthorized Service Accounts: - Try creating a new Service Account (e.g., 'unauthorized-sa') and adding it to the 'web-app-deployment YAML file. - Try updating the deployment. This should fail because the unauthorized service account does not have the necessary permissions. - You can also try creating a pod with the unauthorized service account to see that it cannot access resources it doesn't have permission for. By following these steps, you effectively enforce a policy that ensures the 'web-app' deployment only uses the authorized 'web-app-sa' for resource access, mitigating the risks associated with unauthorized service account usage.
NEW QUESTION # 33
A container image scanner is set up on the cluster.
Given an incomplete configuration in the directory
/etc/Kubernetes/confcontrol and a functional container image scanner with HTTPS endpoint https://acme.local.8081/image_policy
Answer: A
Explanation:
2. Validate the control configuration and change it to implicit deny.
Finally, test the configuration by deploying the pod having the image tag as the latest.
NEW QUESTION # 34
You have a Kubernetes cluster with multiple namespaces, each representing a different department You need to ensure that resources in one namespace cannot access resources in another namespace, even if they are running as the same user. How would you implement this isolation policy and what are the potential risks if this isolation is not implemented effectively?
Answer:
Explanation:
Solution (Step by Step) :
1. Use Network Policies: Define network policies at the namespace level to control communication between pods. Each namespace will have its own
set of policies.
- Example Network Policy (Namespace A):
2. Enable Pod Security Policies (PSPsy PSPs allow you to define security constraints for pods running in your cluster. You can restrict the use of specific resources, capabilities, and network access. - Example PSP:
3. Isolate Resources: Ensure resources are not shared between namespaces, such as storage (persistent volumes) and configuration (config maps, secrets). - Example: Create separate persistent volumes and claims for each namespace. 4. Monitoring and Auditing: Implement monitoring and auditing tools to detect any unauthorized access attempts or violations of your isolation policy. 5. Potential Risks of Insufficient Isolation: - Data Breaches: Data in one namespace could be compromised by applications in another namespace, leading to a data leak. - Denial of Service: Applications in one namespace could consume all available resources, impacting the performance of applications in other namespaces. - Privilege Escalation: An application in one namespace could gain elevated privileges and access resources in other namespaces.
NEW QUESTION # 35
......
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