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[General] New CKS Test Braindumps & CKS Valid Braindumps

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【General】 New CKS Test Braindumps & CKS Valid Braindumps

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Linux Foundation CKS (Certified Kubernetes Security Specialist) Exam is a certification exam that is designed to test the expertise of IT professionals in securing Kubernetes clusters. Kubernetes is a popular container orchestration tool that is used to manage and automate the deployment, scaling, and management of containerized applications. As Kubernetes becomes more widely adopted, the need for skilled IT professionals who can secure Kubernetes clusters has become increasingly important.
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Linux Foundation Certified Kubernetes Security Specialist (CKS) Sample Questions (Q58-Q63):NEW QUESTION # 58
SIMULATION
Documentation Namespace, NetworkPolicy, Pod
You must connect to the correct host . Failure to do so may result in a zero score.
[candidate@base] $ ssh cks000031
Context
You must implement NetworkPolicies controlling the traffic flow of existing Deployments across namespaces.
Task
First, create a NetworkPolicy named deny-policy in the prod namespace to block all ingress traffic.
The prod namespace is labeled env:prod
Next, create a NetworkPolicy named allow-from-prod in the data namespace to allow ingress traffic only from Pods in the prod namespace.
Use the label of the prod names & Click to copy traffic.
The data namespace is labeled env:data
Do not modify or delete any namespaces or Pods . Only create the required NetworkPolicies.
Answer:
Explanation:
See the Explanation below for complete solution
Explanation:
1) Connect to the correct host
ssh cks000031
sudo -i
2) Use admin kubeconfig (safe default)
export KUBECONFIG=/etc/kubernetes/admin.conf
PART A - Deny ALL ingress traffic in prod namespace
Requirement:
NetworkPolicy name: deny-policy
Namespace: prod (namespace is labeled env=prod)
Effect: block all ingress
3) Create deny-policy in prod
Create the policy directly with kubectl (fastest & safest):
cat <<EOF | kubectl apply -f -
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: deny-policy
namespace: prod
spec:
podSelector: {}
policyTypes:
- Ingress
EOF
✅ What this does:
podSelector: {} → selects all Pods in prod
No ingress: rules → deny all ingress traffic
4) Verify
kubectl -n prod get networkpolicy deny-policy
PART B - Allow ingress to data ONLY from Pods in prod
Requirement:
NetworkPolicy name: allow-from-prod
Namespace: data (namespace is labeled env=data)
Allow ingress only from Pods in prod namespace
Use namespace label (env=prod)
5) Create allow-from-prod policy in data
cat <<EOF | kubectl apply -f -
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: allow-from-prod
namespace: data
spec:
podSelector: {}
policyTypes:
- Ingress
ingress:
- from:
- namespaceSelector:
matchLabels:
env: prod
EOF
✅ What this does:
Applies to all Pods in data
Allows ingress only from namespaces labeled env=prod
All other ingress traffic is denied by default
6) Verify
kubectl -n data get networkpolicy allow-from-prod
FINAL CHECK (What the examiner expects)
kubectl get networkpolicy -n prod
kubectl get networkpolicy -n data
You should see:
deny-policy in prod
allow-from-prod in data

NEW QUESTION # 59
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. Explain how you would use a container security posture management (CSPM) tool like Aqua Security to identify and address this potential security risk.
Answer:
Explanation:
Solution (Step by Step) :
1. Deploy Aqua Security:
- Install and configure Aqua Security on your Kubernetes cluster. Aqua Security is a comprehensive CSPM solution that offers a wide range of container security features, including vulnerability scanning, runtime security, and policy enforcement
2 Enable Continuous Image Scanning:
- Configure Aqua Security to continuously scan container images stored in your private registry for vulnerabilities. You can set up policies to block images With specific vulnerabilities or those that fail to meet your security requirements.
3. Implement Runtime Security:
- Enable Aqua Security's runtime security capabilities to monitor running containers for suspicious activity. This includes:
- File Integrity Monitoring (FIM): Detect unauthorized changes to files within containers.
- Network Security: Monitor network connections and identify unauthorized or suspicious traffic.
- Process Monitoring: Detect and block unexpected processes launched within containers.
4. Define Security Policies:
- Create custom security policies in Aqua Security to enforce specific security rules and controls for your Kubernetes cluster. These policies can
define:
- Vulnerability Limits: Allow only containers with specific vulnerability levels to run.
- Network Access Controls: Restrict network connections from containers.
- Resource IJsage Limits: Limit the resources (CPU, memory) that containers can consume-
5. Investigate Security Alerts:
- Aqua Security will generate alerts when it detects potential security risks- Investigate these alerts to understand the root cause of the issue and take corrective actions.
6. Remediate Security Issues:
- Use Aqua Security's remediation capabilities to address vulnerabilities and security issues. This could involve updating container images, patching vulnerabilities, or implementing additional security controls.
7. Monitor and Report:
- Regularly review the security reports and dashboards provided by Aqua Security to track your container security posture- Stay informed about any potential threats and proactively address them.

NEW QUESTION # 60
Given an existing Pod named test-web-pod running in the namespace test-system Edit the existing Role bound to the Pod's Service Account named sa-backend to only allow performing get operations on endpoints.
Create a new Role named test-system-role-2 in the namespace test-system, which can perform patch operations, on resources of type statefulsets.
  • A. Create a new RoleBinding named test-system-role-2-binding binding the newly created Role to the Pod's ServiceAccount sa-backend.
Answer: A

NEW QUESTION # 61
Your application requires access to specific network resources, but you want to restrict its communication to only these allowed ports and IP addresses. Explain how to achieve this using AppArmor profiles.
Answer:
Explanation:
Solution (Step by Step) :
1. Define the AppArmor Profile:
- Create an 'apparmor.conf file with the following content:
- This example allows connections to port 80 on the IP address '10.0.0.10' and port 443 on the IP address '192.168.1.1'.

2. Apply the AppArmor Profile to the Container: - You can apply the AppArmor profile to the container using the 'securityContext' in your deployment or pod spec. - Include the following configuration: - 'securityContext.apparmor.profileName: my-app-profile'

3. Load and Enable the Profile: - Use the following command to load the 'apparmor.conf file: - 'sudo apparmor_parser -r Ipath/to/apparmor.conr - Enable the profile for the container. - 'sudo aa-enforce my-app-profile' 4. Test and Verify: - Deploy the application with the AppArmor profile. - Attempt to access the allowed network resources. - Verify that the application can successfully connect to the specified ports and IP addresses. - Attempt to access other network resources that are not allowed. - Verify that the AppArmor profile blocks these attempts.

NEW QUESTION # 62
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 # 63
......
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