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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Cluster Setup | 15% | - Node metadata protection - Binary verification - Network security policies - CIS benchmark compliance - Secure Ingress configuration |
| Topic 2: System Hardening | 10% | - Network access control - Least privilege IAM - Minimize OS attack surface - Kernel hardening (AppArmor, seccomp) |
| Topic 3: Cluster Hardening | 15% | - Component updates & vulnerability mitigation - RBAC configuration - Service account security - API access restriction |
| Topic 4: Minimize Microservice Vulnerabilities | 20% | - Pod Security Standards - Secret management - Security contexts - OPA/Gatekeeper implementation - Isolation & multi-tenancy |
| Topic 5: Monitoring, Logging and Runtime Security | 20% | - Audit log configuration - Container immutability - Threat detection (Falco) - Incident investigation - Behavioral analytics |
| Topic 6: Supply Chain Security | 20% | - Signed artifacts & verification - Permitted registries - Image security & scanning - SBOM & CI/CD security - Static analysis tools |
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NEW QUESTION # 63
You are configuring a Kubernetes cluster to host a new web application. You want to implement strong authentication mechanisms, including two-factor authentication (2FA) for users accessing the clusters API server. Describe how you would enable 2FA for the Kubernetes API server, including the steps involved and any necessary configuration changes.
Answer:
Explanation:
Solution (Step by Step) :
1. Choose a 2FA Provider:
- Select a suitable 2FA provider that integrates with Kubernetes- Popular choices include:
- Google Authenticator: A Widely used and free 2FA provider.
- Duo Security: A commercial 2FA provider with comprehensive features.
- YubiKey: A hardware security key offering strong 2FA.
2. Configure the 2FA Provider:
- Install and Configure the Provider: Follow the providers instructions to install and configure it within your Kubernetes environment.
3. Enable 2FA for Kubernetes:
- Install a 2FA Extension: Install a Kubernetes extension that integrates with your chosen 2FA provider. These extensions typically require
configuration to connect to your 2FA provider's API.
- Configure Authentication: Modify the Kubernetes API servers authentication configuration to enforce 2FA. This may involve using the authorization-mode' flag, setting up an authentication plugin, or modifying the 'kubelet' configuration.
4. Generate and Distribute 2FA Keys: - Generate 2FA Keys: Use the 2FA provider's tools to generate unique 2FA keys for each user. - Distribute Keys: Distribute the 2FA keys to users securely (e.g., through email or a dedicated 2FA management system). 5. Test the Configuration: - Verify 2FA Enforcement: Attempt to access the Kubernetes API server using a user account. You should be prompted to enter the 2FA code generated by your chosen provider - Validate Successful Authentication: Confirm that the 2FA configuration is correctly implemented and that users can access the API server only after successful 2FA verification.
NEW QUESTION # 64
You are working on a Kubernetes cluster that iS deployed on a Cloud provider. You need to ensure that the Kubernetes nodes are hardened according to security best practices. Implement a solution that automatically scans the nodes for vulnerabilities and applies necessary security updates.
Answer:
Explanation:
Solution (Step by Step):
1. Choose a vulnerability scanning tool. There are many open-source and commercial tools available, such as Trivy, Anchore, and Clair.
2. Deploy the scanning tool in your cluster- This can be done by deploying the tool as a Daemonset, so that it runs on every node.
3. Configure the scanning tool to scan the nodes regularly. This can be done using a CronJob or by configuring the tool to run on a schedule.
4. Integrate the scanning tool with a security information and event management (SIEM) system. This will allow you to centralize security logs and alerts. 5. Configure automatic updates for your nodes. This can be done using your Cloud providers tools or by using a tool like Kured. Important Considerations: False Positives: Tune the scanning tool to minimize false positives. Remediation: Have a process in place tor remediating vulnerabilities that are discovered. Node Updates: Ensure that node updates do not disrupt your applications.
NEW QUESTION # 65
You have a Kubernetes cluster with a Deployment named 'my-app' that exposes a service on port 80. You want to enforce a policy that allows only traffic from pods With a specific label to access this service.
Answer:
Explanation:
Solution (Step by Step) :
1. Create a NetworkPolicy:
- Define a NetworkPolicy resource with a 'podSelector' that matches the 'my-app' Deployment.
- Create an 'ingress' rule that allows traffic only from pods with the specific label.
- Use the 'from' field to specify the label selector.
- Ensure that the port 80 is included in the 'ports' field.
2. Apply the NetworkPolicy: - Apply the YAML file using 'kubectl apply -f my-app-label-policy-yamr 3. Verify the NetworkPolicy: - Use 'kubectl get networkpolicies' to list the available network policies. - Use 'kubectl describe networkpolicy my-app-label-policy' to view the details ot the applied policy. 4. Test the NetworkPolicy: - Deploy a pod with the label 'allowed: true' and attempt to access the service on port 80. Verify that the connection is successful. - Deploy a pod without the label 'allowed: true' and attempt to access the service on port 80. Verify that the connection is denied.
NEW QUESTION # 66
SIMULATION
Documentation Secrets, TLS Secrets, Volumes
You must connect to the correct host . Failure to do so may result in a zero score.
[candidate@base] $ ssh cks000m40
Path
Key
Context
You must complete securing access to a web server using SSL files stored in a TLS Secret .
Task
Create a TLS Secret named clever-cactus in the clever-cactus namespace for an existing Deployment named clever-cactus.
Use the following SSL files:
File
Certificate /home/candidate/clever-cactus/web.k8s.local.crt
/home/candidate/clever-cactus/web.k8s.local.key
The Deployment is already configured to use the TLS Secret.
Do not modify the existing Deployment.
Failure to do so may result in a reduced score.
Answer:
Explanation:
See the Explanation below for complete solution
Explanation:
1) Connect to the correct host
ssh cks000m40
sudo -i
export KUBECONFIG=/etc/kubernetes/admin.conf
2) Verify namespace exists (quick check)
kubectl get ns clever-cactus
3) Verify certificate and key files exist
ls -l /home/candidate/clever-cactus/web.k8s.local.crt
ls -l /home/candidate/clever-cactus/web.k8s.local.key
Both files must exist.
4) Create the TLS Secret (THIS IS THE MAIN TASK)
Create a TLS Secret named clever-cactus in namespace clever-cactus:
kubectl -n clever-cactus create secret tls clever-cactus \
--cert=/home/candidate/clever-cactus/web.k8s.local.crt \
--key=/home/candidate/clever-cactus/web.k8s.local.key
Do NOT use apply
Do NOT edit the Deployment
5) Verify the Secret
kubectl -n clever-cactus get secret clever-cactus
Expected type:
kubernetes.io/tls
Optional detail check:
kubectl -n clever-cactus describe secret clever-cactus
You should see:
tls.crt
tls.key
6) (Optional) Confirm Pods are running
Since the Deployment is already configured to use the Secret, Pods should now work.
kubectl -n clever-cactus get pods
NEW QUESTION # 67
Context:
Cluster: gvisor
Master node: master1
Worker node: worker1
You can switch the cluster/configuration context using the following command:
[desk@cli] $ kubectl config use-context gvisor
Context: This cluster has been prepared to support runtime handler, runsc as well as traditional one.
Task:
Create a RuntimeClass named not-trusted using the prepared runtime handler names runsc.
Update all Pods in the namespace server to run on newruntime.
Answer:
Explanation:
Find all the pods/deployment and edit runtimeClassName parameter to not-trusted under spec
[desk@cli] $ k edit deploy nginx
spec:
runtimeClassName: not-trusted. # Add this
Explanation
[desk@cli] $vim runtime.yaml
apiVersion: node.k8s.io/v1
kind: RuntimeClass
metadata:
name: not-trusted
handler: runsc
[desk@cli] $ k apply -f runtime.yaml
[desk@cli] $ k get pods
NAME READY STATUS RESTARTS AGE
nginx-6798fc88e8-chp6r 1/1 Running 0 11m
nginx-6798fc88e8-fs53n 1/1 Running 0 11m
nginx-6798fc88e8-ndved 1/1 Running 0 11m
[desk@cli] $ k get deploy
NAME READY UP-TO-DATE AVAILABLE AGE
nginx 3/3 11 3 5m
[desk@cli] $ k edit deploy nginx
NEW QUESTION # 68
......
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