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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Minimize Microservice Vulnerabilities | 20% | - Secret management - Security contexts - Isolation & multi-tenancy - Pod Security Standards - OPA/Gatekeeper implementation |
| Topic 2: Cluster Setup | 15% | - Secure Ingress configuration - Node metadata protection - Binary verification - CIS benchmark compliance - Network security policies |
| Topic 3: System Hardening | 10% | - Network access control - Minimize OS attack surface - Least privilege IAM - Kernel hardening (AppArmor, seccomp) |
| Topic 4: Supply Chain Security | 20% | - Image security & scanning - Permitted registries - Static analysis tools - SBOM & CI/CD security - Signed artifacts & verification |
| Topic 5: Monitoring, Logging and Runtime Security | 20% | - Audit log configuration - Container immutability - Behavioral analytics - Incident investigation - Threat detection (Falco) |
| Topic 6: Cluster Hardening | 15% | - API access restriction - Component updates & vulnerability mitigation - Service account security - RBAC configuration |
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NEW QUESTION # 26
You have a Kubernetes cluster running a critical application that uses a sensitive configuration file mounted as a volume. You want to ensure that only authorized users can access this configuration file. How would you restrict access to this configuration file using Kubernetes R8AC, including the necessary roles, bindings, and service accounts?
Answer:
Explanation:
Solution (Step by Step) :
1. Create a Service Account
- Create a service account for the application that needs access to the configuration file.
- Example:
2. Create a Role: - Create a role that grants read-only access to the configuration file. - Example:
3. Bind the Role to the Service Account: - Bind the role to the service account to grant access. - Example:
4. Update the Deployment: - Update the deployment YAML to use the service account and specify the volume mount. - Example:
5. Apply the Changes: - Apply the service account, role, role binding, and updated deployment using ' kubectl apply -f' commands.
NEW QUESTION # 27
You are running a critical application in your Kubernetes cluster and want to minimize the attack surface by removing unnecessary features from the cluster- You need to identify and disable features that are not essential for your application.
Answer:
Explanation:
Solution (Step by Step):
1. Review Cluster Features: Analyze your cluster configuration and identity features that are not used by your critical application. This might include unnecessary network services, ingress controllers, or resource quotas.
2. Disable Unused Features:
- Network Services: You might disable or remove network services that are not required for your application's functionality. This could include removing unused NodePons or disabling unused Ingress controllers.
- Ingress Controllers: If you are not using Ingress controllers, disable them or remove the associated configuration.
- Resource Quotas: If you do not need resource quotas for your application, disable them.
- Other Features: You can disable other features like the dashboard, network policy enforcement, or other security features that you may not require.
3. Disable Unnecessary Components: Remove unused components or services that are not essential for your application.
4. Minimize Services Exposed to the Internet: Only expose the necessary services to the public internet and restrict access to other services to authorized users or applications.
NEW QUESTION # 28
You are running a web application in a Kubemetes cluster- You want to restrict access to the web application's API endpoints to specific IP addresses. Explain how to implement this using Ingress and NetworkPolicy.
Answer:
Explanation:
Solution (Step by Step) :
1. Create an Ingress Resource:
- Create an 'Ingress' resource that defines the rules for routing traffic to the web application.
- This example allows access to the API endpoints '/api/v1' and /api/v2S from the IP addresses '10.0.0.10' and '192.168.1.1'
- It also allows access to the 'r endpoint from any IP address.
2. Create a NetworkPolicy: - Create a 'NetworkPolicy' resource that enforces the IP address restrictions. - This example allows traffic from the IP addresses '10.0.0.10' and '192.168.1. I' to the web application's service. - You can create a more specific policy for each API endpoint if needed.
3. Apply the Resources: - Apply the 'Ingress' and 'NetworkPolicy' resources using 'kubectl apply' - For example: 'kubectl apply -f web-app-ingress.yaml and 'kubectl apply -f web-app-network-policy.yaml 4. Verify the Configuration: - Access the web application's API endpoints from the allowed IP addresses. - Verity that the requests are successful. - Attempt to access the API endpoints from other IP addresses. - Verify that these attempts are blocked.
NEW QUESTION # 29
You have a Kubernetes cluster running a highly sensitive microservices application. You need to implement a strict security policy wnere only pods with specific labels can communicate with each other within the same namespace. How can you achieve this using NetworkPolicies?
Answer:
Explanation:
Solution (Step by Step) :
1. Define Label-Based Access: Identify the specific labels tnat pods within tne namespace Should have to allow communication. For example, let'S say pods with the labels Sapp: serviceAS and Sapp: serviceB' should be allowed to communicate, but other pods should be isolated.
2. Create NetworkPolicy: Create a NetworkPolicy YAML file named 'strict-communication.yaml to define the communication policy:
- This policy allows pods with the labels 'app: serviceA' or Sapp: serviced' to communicate witn each other. Other pods Within the same namespace are not allowed to communicate. 3. Apply Network Policy: Apply the NetworkPolicy using 'kubectr: bash kubectl apply -f strict-communication.yaml 4. Verify Network Policy: Verify the NetworkPolicy is applied: bash kubectl get networkpolicies -n 5. Test Access: Test communication between pods within the namespace. Pods with the specified labels Capp: serviceAS and Sapp: serviceB') should be able to communicate. Other pods should not be able to communicate with each other or with the labeled pods. This NetworkPolicy enforces a strict communication policy within the namespace. It restricts communication to pods with specific labels, effectively isolating other pods within the same namespace. This policy can be tuner customized to define more granular communication rules based on labels and other pod attributes.
NEW QUESTION # 30
You're working with a Kubernetes cluster where you need to enforce a secure supply chain. You have a Kubernetes deployment that utilizes a container image from a specific registry. How would you configure your Kubernetes cluster to only allow images from this registry to be used in deployments?
Answer:
Explanation:
Solution (Step by Step) :
1. Create a PodSecurityPolicy (PSP):
- A PSP is a policy that enforces security restrictions on pods. We will use it to restrict image pulls to a specific registry.
- create a PSP YAML file.
2. Define Allowed Registries: - Within the 'spec' of your PSP, create a field 'seLinux' and then define the allowed registries within the 'seLinux' field. - Example:
3. Apply the PSP: - Apply the PSP to your cluster using kubectl apply -f restricted-registry-psp.yaml' 4. Create a Service Account: - Create a service account that will be allowed to run pods with this PSP:
5. Bind the PSP to the Service Account: - Add the 'securityContext' field to your deployment and specify the PSP you just created:
- Apply the deployment: bash kubectl apply -f deploymentyaml - Now, the deployment will only be able to pull images from the specified registry-
NEW QUESTION # 31
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