Free PDF 2025 Pass-Sure CKS: Latest Certified Kubernetes Security Specialist (CKS) Test Preparation
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Linux Foundation CKS (Certified Kubernetes Security Specialist) Certification Exam is an excellent opportunity for professionals to validate their expertise in Kubernetes security. It is a challenging exam that tests the candidate’s ability to identify and mitigate security threats in a Kubernetes environment. Certified Kubernetes Security Specialist (CKS) certification is highly valued by employers and is an excellent way for professionals to advance their careers in the field of Kubernetes security.
To be eligible for the CKS certification, candidates must have a current Certified Kubernetes Administrator (CKA) certification or a passing score on the Kubernetes Fundamentals (LFS258) course. The CKS certification exam is a proctored, online exam that consists of 15 to 20 performance-based tasks. Candidates have two hours to complete the exam and must score at least 66% to pass. CKS Exam is available in multiple languages and can be taken from anywhere in the world.
Linux Foundation CKS (Certified Kubernetes Security Specialist) Certification Exam is an essential certification program for professionals seeking to validate their knowledge and skills in securing Kubernetes clusters. Certified Kubernetes Security Specialist (CKS) certification exam covers a wide range of security topics and is vendor-neutral, making it a valuable credential for professionals working in a variety of industries. CKS exam is rigorous and performance-based, ensuring that certified professionals possess the necessary knowledge and skills to secure Kubernetes environments effectively.
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Linux Foundation CKS Exam Preparation Material
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Linux Foundation Certified Kubernetes Security Specialist (CKS) Sample Questions (Q53-Q58):
NEW QUESTION # 53
SIMULATION
Create a Pod name Nginx-pod inside the namespace testing, Create a service for the Nginx-pod named nginx-svc, using the ingress of your choice, run the ingress on tls, secure port.
Answer: A
NEW QUESTION # 54
You need to implement a secure network policy that allows communication only between specific pods within a namespace. For example, you want to allow communication between pods that have the label 'app=frontend' and pods that have the label 'app=backend', but block all other communication within the namespace.
Answer:
Explanation:
Solution (Step by Step) :
1. Create a NetworkPolicy:
- Define a NetworkP01icy that allows communication between 'frontend' and 'backend' pods, but blocks other communication within the namespace.
2. Create a Frontend Pod: - Create a Pod with the label 'app=frontend'.
3. Create a Backend Pod: - Create a Pod With the label 'app=backend'.
4. Apply the YAML files: - Apply the created YAML files using ' kubectl apply -f 5. Verify the Network Policy: - Try to connect from the 'frontend-pod' to the 'backend-pod' (e.g., using ' kubectl exec -it frontend-pod bash' and 'curl backend-pod:80')- It should succeed. - Try to connect from the 'frontend-pod' to another pod in the namespace that doesn't have the Sapp-backend' label. This connection should be blocked.
NEW QUESTION # 55
You can switch the cluster/configuration context using the following command: [desk@cli] $ kubectl config use-context stage Context: A PodSecurityPolicy shall prevent the creation of privileged Pods in a specific namespace. Task: 1. Create a new PodSecurityPolcy named deny-policy, which prevents the creation of privileged Pods. 2. Create a new ClusterRole name deny-access-role, which uses the newly created PodSecurityPolicy deny-policy. 3. Create a new ServiceAccount named psd-denial-sa in the existing namespace development. Finally, create a new ClusterRoleBindind named restrict-access-bind, which binds the newly created ClusterRole deny-access-role to the newly created ServiceAccount psp-denial-sa
Answer:
Explanation:
Create psp to disallow privileged container
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: deny-access-role
rules:
- apiGroups: ['policy']
resources: ['podsecuritypolicies']
verbs: ['use']
resourceNames:
- "deny-policy"
k create sa psp-denial-sa -n development
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: restrict-access-bing
roleRef:
kind: ClusterRole
name: deny-access-role
apiGroup: rbac.authorization.k8s.io
subjects:
- kind: ServiceAccount
name: psp-denial-sa
namespace: development
Explanation
master1 $ vim psp.yaml
apiVersion: policy/v1beta1
kind: PodSecurityPolicy
metadata:
name: deny-policy
spec:
privileged: false # Don't allow privileged pods!
seLinux:
rule: RunAsAny
supplementalGroups:
rule: RunAsAny
runAsUser:
rule: RunAsAny
fsGroup:
rule: RunAsAny
volumes:
- '*'
master1 $ vim cr1.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: deny-access-role
rules:
- apiGroups: ['policy']
resources: ['podsecuritypolicies']
verbs: ['use']
resourceNames:
- "deny-policy"
master1 $ k create sa psp-denial-sa -n development master1 $ vim cb1.yaml apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRoleBinding metadata:
name: restrict-access-bing
roleRef:
kind: ClusterRole
name: deny-access-role
apiGroup: rbac.authorization.k8s.io
subjects:
# Authorize specific service accounts:
- kind: ServiceAccount
name: psp-denial-sa
namespace: development
master1 $ k apply -f psp.yaml master1 $ k apply -f cr1.yaml master1 $ k apply -f cb1.yaml Reference: https://kubernetes.io/docs/concepts/policy/pod-security-policy/
NEW QUESTION # 56
You must complete this task on the following cluster/nodes: Cluster: immutable-cluster Master node: master1 Worker node: worker1 You can switch the cluster/configuration context using the following command: [desk@cli] $ kubectl config use-context immutable-cluster Context: It is best practice to design containers to be stateless and immutable. Task: Inspect Pods running in namespace prod and delete any Pod that is either not stateless or not immutable. Use the following strict interpretation of stateless and immutable: 1. Pods being able to store data inside containers must be treated as not stateless. Note: You don't have to worry whether data is actually stored inside containers or not already. 2. Pods being configured to be privileged in any way must be treated as potentially not stateless or not immutable.
Answer:
Explanation:
Reference: https://kubernetes.io/docs/concepts/policy/pod-security-policy/ https://cloud.google.com/architecture/best-practices-for-operating-containers
NEW QUESTION # 57
You are running a Kubernetes cluster with a deployment named "my-app" that uses a container image from a public registry. The container image has a vulnerability in a library it uses. You want to apply a security patch to the container image without rebuilding it. Explain how you would implement this using a container patching tool like 'image-patcners and update the deployment.
Answer:
Explanation:
Solution (Step by Step) :
1. Install 'image-patchers:
- Install the 'image-patcher' tool on your system or within your Kubernetes cluster. 'image-patcher' is a tool for patching container images without rebuilding thenm It allows you to modify the container image's filesystem and update libraries directly.
2. Identify the Vulnerable Library:
- Use a vulnerability scanner like Trivy to identify the specific vulnerable library within the container image.
3. Patch the Vulnerable Library:
- Use 'image-patcher' to apply the security patch to the vulnerable library within the container image.
- You can use the 'image-patcher apply' command with the patch file and tne container image name to apply the patch.
4. Create a Patched Image:
- 'image-patcher' Will generate a new, patched container image. This patched image will contain the updated library with the security fix applied.
5. Push the Patched Image to a Registry:
- Push the patched image to your private container registry for use in deployments.
6. Update the Deployment
- Update the "my-app" deployment configuration to use the newly created patched image from your private registry.
7. Validate the Patch:
- After updating the deployment, verify that the patch has been successfully applied by running a vulnerability scan on the running container.
NEW QUESTION # 58
......
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