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| Section | Weight | Objectives |
|---|---|---|
| Monitoring, Logging and Runtime Security | 20% | - Container immutability - Threat detection (Falco) - Behavioral analytics - Audit log configuration - Incident investigation |
| System Hardening | 10% | - Network access control - Kernel hardening (AppArmor, seccomp) - Minimize OS attack surface - Least privilege IAM |
| Cluster Hardening | 15% | - API access restriction - Service account security - Component updates & vulnerability mitigation - RBAC configuration |
| Supply Chain Security | 20% | - Signed artifacts & verification - SBOM & CI/CD security - Permitted registries - Image security & scanning - Static analysis tools |
| Minimize Microservice Vulnerabilities | 20% | - OPA/Gatekeeper implementation - Isolation & multi-tenancy - Security contexts - Pod Security Standards - Secret management |
| Cluster Setup | 15% | - Secure Ingress configuration - CIS benchmark compliance - Network security policies - Binary verification - Node metadata protection |
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NEW QUESTION # 53
Cluster: scanner Master node: controlplane Worker node: worker1
You can switch the cluster/configuration context using the following command:
[desk@cli] $ kubectl config use-context scanner
Given: You may use Trivy's documentation.
Task: Use the Trivy open-source container scanner to detect images with severe vulnerabilities used by Pods in the namespace nato.
Look for images with High or Critical severity vulnerabilities and delete the Pods that use those images. Trivy is pre-installed on the cluster's master node. Use cluster's master node to use Trivy.
Answer:
Explanation:
NEW QUESTION # 54
SIMULATION
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.
Create a new RoleBinding named dev-test-role-binding, which binds the newly created Role to the Pod's ServiceAccount ( found in the Nginx pod running in namespace test-system).
Answer: A
NEW QUESTION # 55
You have a Kubernetes cluster with a deployment running a critical application. You need to restrict inbound network access to the pods in this deployment to only allow traffic from a specific service within the cluster. How would you achieve this using NetworkPolicy?
Answer:
Explanation:
Solution (Step by Step):
1. Create a NetworkP01icy: Define a NetworkPoliCY resource that specifies the allowed ingress traffic.
- Name: 'allow-service-access (you can choose any name)
- Namespace: The same namespace as the deployment you want to restrict.
- Spec:
- PodSeIector: This should match the pods in your deployment. You can use labels to select the pods.
- Ingress: This defines the allowed incoming traffic.
- From: Define the source of the allowed traffic.
- PodSeIector: If the traffic is coming from another deployment within the cluster, you can define the pod selector for that deployment.
- Namespaceselector: It the traffic is coming trom a service within the cluster, you can define the namespace selector.
- IPBIock: If the traffic is coming from a specific IP range, you can use 'IP310ck' to define that.
- Ports: This defines the specific ports that are allowed.
- You can either specify individual (e.g., 'tcp:80') or a port range (e.g., 'tcp:80-8080').
2. Apply the NetworkPolicy:
- Use 'kubectl apply -f networkpolicy.yamr to create the NetworkPolicy.
Example YAML for NetworkPolicy:
- The NetworkP01icy allows inbound traffic from any pod in the namespace With label - This traffic can access port 80 (TCP) on the pods with the label 'app: Important Notes: - NetworkPolicies are enforced at the pod level. If no NetworkPolicy is defined, all traffic is allowed by default. - If you need to allow traffic from multiple sources, you can define multiple 'ingress' rules within the NetworkPolicy. - Make sure you have sufficient understanding of Kubernetes Networking and NetworkPolicy concepts before implementing this.
NEW QUESTION # 56
You are running a Kubernetes cluster with a deployment named "my-app" that uses a container image from a public registry. You suspect that a recent deployment update may have introduced a vulnerability in one of the containers. Describe how you can use container image scanning tools like Trivy to identify and address the vulnerability.
Answer:
Explanation:
Solution (Step by Step) :
1. Install and Configure Trivy:
- Install Trivy on your system or Within your Kubernetes cluster. Trivy is a versatile vulnerability scanner that can scan container images, filesystems, and applications.
2. Scan the Container Image:
- Run Trivy against the container image used by the "my-app" deployment.
bash
trivy image example/nginx:latest
3. Analyze the Scan Results:
- Review the Trivy scan report, which will list any vulnerabilities detected in the container image. The report will provide information like the vulnerability's severity, description, and potential impact.
4. Address the Vulnerability:
- If vulnerabilities are discovered, take appropriate actions to mitigate the risk. This could involve:
- Updating the Container Image: If a newer version of the container image is available with the vulnerability patched, update the deployment to use the updated image.
- Implementing Security Measures: Consider implementing additional security controls within your containers, such as restricting network access, limiting container privileges, or using security-enhancing tools.
- Accepting the Risk: If the vulnerability is deemed low risk and updating or mitigating it is not feasible, you may choose to accept the risk and monitor the vulnerability closely.
5. Integrate with CI/CD Pipeline:
- Integrate Trivy into your CI/CD pipeline to automatically scan container images before they are deployed to your Kubernetes cluster. This helps to catch vulnerabilities early and prevents them from being introduced into your production environment.
NEW QUESTION # 57
You nave a Kubernetes cluster with a Deployment named 'web-app- that runs multiple replicas of a web application. You need to create a network policy that allows only traffic from pods in the same namespace to access the web application's API endpoint on port 8080.
Answer:
Explanation:
Solution (Step by Step) :
1. Create a NetworkP01icy:
- Define a NetworkPoIicy resource with a 'podSeIector that matches the 'web-app' Deployment.
- Create an 'ingress' rule that allows traffic from pods within the same namespace.
- Use the 'from' field to specify the namespace and set the 'namespaceselector' to 'matchLabels: {}' to include all pods in the namespace.
- Ensure that the port 8080 is included in the 'ports' field.
2. Apply the NetworkPolicy: - Apply the YAML file using 'kubectl apply -f web-app-namespace-policy.yaml 3. Verify the NetworkPoIicy: - Use 'kubectl get networkpolicies' to list the available network policies. - Use 'kubectl describe networkpolicy web-app-namespace-policy' to view the details of the applied policy. 4. Test the NetworkPolicy: - Deploy a pod in the same namespace as the 'web-app' Deployment and attempt to access the API endpoint Verify that the connection is successful. - Deploy a pod in a different namespace and attempt to access the API endpoint Verity that the connection is denied.
NEW QUESTION # 58
......
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