Pass4Test CKS 최신 PDF 버전 시험 문제집을 무료로 Google Drive에서 다운로드하세요: https://drive.google.com/open?id=1ozkZxFElzJf0HmnXN-Via6BOMH3KcjJY
요즘 같은 인재가 많아지는 사회에도 많은 업계에서는 아직도 관련인재가 부족하다고 합니다.it업계에서도 이러한 상황입니다.Linux Foundation CKS시험은 it인증을 받을 수 있는 좋은 시험입니다. 그리고Pass4Test는Linux Foundation CKS덤프를 제공하는 사이트입니다.
| Certification Vendor: | Linux Foundation |
|---|---|
| Exam Name: | Certified Kubernetes Security Specialist (CKS) Exam |
| Exam Number: | CKS |
| Exam Price: | USD 395 |
| Real Exam Qty: | Performance-based tasks (no fixed number) |
| Passing Score: | Not publicly disclosed |
| Exam Format: | Performance-based exam, Hands-on lab (Kubernetes environment), Terminal-based tasks |
| Exam Duration: | 120 minutes |
| Certificate Validity Period: | 2 years |
| Available Languages: | English |
| Related Certifications: | Certified Kubernetes Administrator (CKA) Certified Kubernetes Application Developer (CKAD) |
| Recommended Training: | CKS Exam Preparation Course Kubernetes Security Essentials (Linux Foundation Training) |
| Exam Registration: | Linux Foundation Candidate Handbook Linux Foundation Certification Page |
| Sample Questions: | Linux Foundation CKS Sample Questions |
| Exam Way: | Online, proctored, remote performance-based exam |
| Pre Condition: | Valid Certified Kubernetes Administrator (CKA) certification is required |
| Official Syllabus URL: | https://training.linuxfoundation.org/certification/certified-kubernetes-security-specialist/ |
Linux Foundation CKS인증시험도 어려울 뿐만 아니라 신청 또한 어렵습니다.Linux Foundation CKS시험은 IT업계에서도 권위가 있고 직위가 있으신 분들이 응시할 수 있는 시험이라고 알고 있습니다. 우리 Pass4Test에서는Linux Foundation CKS관련 학습가이드를 제동합니다. Pass4Test 는 우리만의IT전문가들이 만들어낸Linux Foundation CKS관련 최신, 최고의 자료와 학습가이드를 준비하고 있습니다. 여러분의 편리하게Linux Foundation CKS응시하는데 많은 도움이 될 것입니다.
Linux Foundation CKS 시험은 Kubernetes 환경에서 작업하는 전문가들에게 필수적인 인증입니다. 이 시험은 Kubernetes 클러스터에 배포된 컨테이너화된 애플리케이션을 보호하는 데 필요한 기술과 지식을 검증합니다. CKS 인증은 산업에서 매우 높은 가치를 두며, 컨테이너 보안 분야에서 전문가들의 경력을 살릴 수 있습니다.
질문 # 18
SIMULATION
Fix all issues via configuration and restart the affected components to ensure the new setting takes effect.
Fix all of the following violations that were found against the API server:- a. Ensure that the RotateKubeletServerCertificate argument is set to true.
b. Ensure that the admission control plugin PodSecurityPolicy is set.
c. Ensure that the --kubelet-certificate-authority argument is set as appropriate.
Fix all of the following violations that were found against the Kubelet:- a. Ensure the --anonymous-auth argument is set to false.
b. Ensure that the --authorization-mode argument is set to Webhook.
Fix all of the following violations that were found against the ETCD:-
a. Ensure that the --auto-tls argument is not set to true
b. Ensure that the --peer-auto-tls argument is not set to true
Hint: Take the use of Tool Kube-Bench
정답：
설명：
See the Explanation belowExplanation:
Fix all of the following violations that were found against the API server:- a. Ensure that the RotateKubeletServerCertificate argument is set to true.
apiVersion: v1
kind: Pod
metadata:
creationTimestamp: null
labels:
component: kubelet
tier: control-plane
name: kubelet
namespace: kube-system
spec:
containers:
- command:
- kube-controller-manager
+ - --feature-gates=RotateKubeletServerCertificate=true
image: gcr.io/google_containers/kubelet-amd64:v1.6.0
livenessProbe:
failureThreshold: 8
httpGet:
host: 127.0.0.1
path: /healthz
port: 6443
scheme: HTTPS
initialDelaySeconds: 15
timeoutSeconds: 15
name: kubelet
resources:
requests:
cpu: 250m
volumeMounts:
- mountPath: /etc/kubernetes/
name: k8s
readOnly: true
- mountPath: /etc/ssl/certs
name: certs
- mountPath: /etc/pki
name: pki
hostNetwork: true
volumes:
- hostPath:
path: /etc/kubernetes
name: k8s
- hostPath:
path: /etc/ssl/certs
name: certs
- hostPath:
path: /etc/pki
name: pki
b. Ensure that the admission control plugin PodSecurityPolicy is set.
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
tests:
test_items:
- flag: "--enable-admission-plugins"
compare:
op: has
value: "PodSecurityPolicy"
set: true
remediation: |
Follow the documentation and create Pod Security Policy objects as per your environment.
Then, edit the API server pod specification file $apiserverconf
on the master node and set the --enable-admission-plugins parameter to a value that includes PodSecurityPolicy :
--enable-admission-plugins=...,PodSecurityPolicy,...
Then restart the API Server.
scored: true
c. Ensure that the --kubelet-certificate-authority argument is set as appropriate.
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
tests:
test_items:
- flag: "--kubelet-certificate-authority"
set: true
remediation: |
Follow the Kubernetes documentation and setup the TLS connection between the apiserver and kubelets. Then, edit the API server pod specification file
$apiserverconf on the master node and set the --kubelet-certificate-authority parameter to the path to the cert file for the certificate authority.
--kubelet-certificate-authority=<ca-string>
scored: true
Fix all of the following violations that were found against the ETCD:-
a. Ensure that the --auto-tls argument is not set to true
Edit the etcd pod specification file $etcdconf on the master
node and either remove the --auto-tls parameter or set it to false.
--auto-tls=false
b. Ensure that the --peer-auto-tls argument is not set to true
Edit the etcd pod specification file $etcdconf on the master
node and either remove the --peer-auto-tls parameter or set it to false.
--peer-auto-tls=false
질문 # 19
SIMULATION
Fix all issues via configuration and restart the affected components to ensure the new setting takes effect.
Fix all of the following violations that were found against the API server:- a. Ensure that the RotateKubeletServerCertificate argument is set to true.
b. Ensure that the admission control plugin PodSecurityPolicy is set.
c. Ensure that the --kubelet-certificate-authority argument is set as appropriate.
Fix all of the following violations that were found against the Kubelet:- a. Ensure the --anonymous-auth argument is set to false.
b. Ensure that the --authorization-mode argument is set to Webhook.
Fix all of the following violations that were found against the ETCD:-
a. Ensure that the --auto-tls argument is not set to true
b. Ensure that the --peer-auto-tls argument is not set to true
Hint: Take the use of Tool Kube-Bench
정답：
설명：
Fix all of the following violations that were found against the API server:- a. Ensure that the RotateKubeletServerCertificate argument is set to true.
apiVersion: v1
kind: Pod
metadata:
creationTimestamp: null
labels:
component: kubelet
tier: control-plane
name: kubelet
namespace: kube-system
spec:
containers:
- command:
- kube-controller-manager
+ - --feature-gates=RotateKubeletServerCertificate=true
image: gcr.io/google_containers/kubelet-amd64:v1.6.0
livenessProbe:
failureThreshold: 8
httpGet:
host: 127.0.0.1
path: /healthz
port: 6443
scheme: HTTPS
initialDelaySeconds: 15
timeoutSeconds: 15
name: kubelet
resources:
requests:
cpu: 250m
volumeMounts:
- mountPath: /etc/kubernetes/
name: k8s
readOnly: true
- mountPath: /etc/ssl/certs
name: certs
- mountPath: /etc/pki
name: pki
hostNetwork: true
volumes:
- hostPath:
path: /etc/kubernetes
name: k8s
- hostPath:
path: /etc/ssl/certs
name: certs
- hostPath:
path: /etc/pki
name: pki
b. Ensure that the admission control plugin PodSecurityPolicy is set.
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
tests:
test_items:
- flag: "--enable-admission-plugins"
compare:
op: has
value: "PodSecurityPolicy"
set: true
remediation: |
Follow the documentation and create Pod Security Policy objects as per your environment.
Then, edit the API server pod specification file $apiserverconf
on the master node and set the --enable-admission-plugins parameter to a value that includes PodSecurityPolicy :
--enable-admission-plugins=...,PodSecurityPolicy,...
Then restart the API Server.
scored: true
c. Ensure that the --kubelet-certificate-authority argument is set as appropriate.
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
tests:
test_items:
- flag: "--kubelet-certificate-authority"
set: true
remediation: |
Follow the Kubernetes documentation and setup the TLS connection between the apiserver and kubelets. Then, edit the API server pod specification file
$apiserverconf on the master node and set the --kubelet-certificate-authority parameter to the path to the cert file for the certificate authority.
--kubelet-certificate-authority=<ca-string>
scored: true
Fix all of the following violations that were found against the ETCD:-
a. Ensure that the --auto-tls argument is not set to true
Edit the etcd pod specification file $etcdconf on the master node and either remove the --auto-tls parameter or set it to false. --auto-tls=false b. Ensure that the --peer-auto-tls argument is not set to true Edit the etcd pod specification file $etcdconf on the master node and either remove the --peer-auto-tls parameter or set it to false. --peer-auto-tls=false
질문 # 20
You have a Kubernetes cluster running a critical application with multiple deployments. You need to ensure that only authorized users can access the application's configuration files stored in ConfigMaps.
정답：
설명：
Solution (Step by Step) :
1. Create a ROE for ConngMap Access:
- Create a Role YAML file named 'configmap-reader.yaml' to grant read-only access to ConfigMaps:
2. Create a RoIeBinding to Assign the Role: - Create a RoleBinding YAML file named 'configmap-reader-binding.yaml' to bind the 'configmap-reader' role to a specific user or group:
3. Apply the Role and RoleBinding: - Apply the YAML files using kubectl apply -f configmap-reader.yaml configmap-reader-binding.yaml 4. Create a ConfigMap: - Create a ConfigMap named 'app-config' that contains sensitive configuration information:
5. Verify Access Restrictions: - Log in as the 'authorized-user and try accessing the 'app-config' ConfigMap using 'kubectl get configmap app-config' _ You should be able to view the ContigMap data. - Log in as a different user who does not have the 'configmap-reader' role assigned. Try accessing the 'app-config' ConfigMap. You should not be able to access it.
질문 # 21
You are building a container image for a critical application that needs to be deployed in a Kubernetes cluster. Your organization has strict security policies in place, requiring you to perform a thorough security audit of the image before deployment. Outline the steps you would take to conduct a comprehensive security audit of the container image, focusing on the following aspects:
- Vulnerability Scanning: Use tools to scan the image for known vulnerabilities and provide details of the process.
- Security Best Practices: Describe the security best practices that you would audit against.
- Runtime Behavior Analysis: Explain how you would analyze the image's runtime behavior to identify potential risks.
정답：
설명：
Solution (Step by Step) :
1. Vulnerability Scanning:
- Use a Container Image Scanner: Employ tools like ' Trivy', 'snyk' , or 'Aqua Security' to scan the image for known vulnerabilities in the base image, libraries, and dependencies. These tools leverage vulnerability databases to identify vulnerabilities and provide severity ratings.
- Scan the Image: Execute the scanner tool against the container image to identity any vulnerabilities present. For example:
bash
trivy image
- Analyze the Scan Report: Review the scan report to identify vulnerable components. Prioritize fixing vulnerabilities based on their severity and impact.
2. Security Best Practices:
- Check for Minimal Image Size: Ensure the image is as small as possible by removing unnecessary files and dependencies. Smaller images reduce attack surface and improve security.
- Verify Image Origim Check if the base image is from a trusted source (e.g., an official repository) and is not tampered with. IJse signing techniques to ensure image integrity.
- Check for Open Ports: Audit the image's Dockerfile to ensure that only necessary ports are exposed.
- Minimize Privileges: Verify that the container runs with the least privileged user ID and does not have unnecessary capabilities.
3. Runtime Behavior Analysis:
- Analyze System Calls: Use tools like 'strace' or 'ptrace' to capture and analyze the system calls made by the container during runtime. This can help identity suspicious behavior or potential vulnerabilities-
- Monitor Network Traffic: Observe the containers network traffic for any unexpected or malicious connections.
- Log Analysis: Implement comprehensive logging within the container and analyze log entries for any security-related events.
질문 # 22
You are deploying a microservice application on Kubernetes, and you are concerned about the potential for one microservice to compromise the security of other microservices in the cluster. How can you use Kubernetes features to implement isolation between your microservices and minimize this risk?
정답：
설명：
Solution (Step by Step) :
1. Namespaces: Use Kubernetes namespaces to logically separate your microservices. Each namespace can have its own set of resources, security
policies, and network configurations.
- Example: You could create namespaces for "user-service", "order-service", "payment-service", etc.
2. Network Policies: Define network policies to control communication between pods within and across namespaces.
- Example:
3. Pod Security Policies (PSPs): Use PSPs to restrict the capabilities and resources that pods can use. - Example:
4. Service Accounts: Create separate service accounts for each microservice and restrict their permissions. - Example: Use RBAC (Role-Based Access Control) to define roles and bindings for each service account 5. Resource Quotas: Limit the resources (CPU, memory, etc.) that each microservice can consume. This helps prevent one microservice from ovenvhelming the cluster and impacting others. 6. Security Context: Use the 'securitycontext field in pod definitions to apply security restrictions to individual pods. - Example:
7. Pod Disruption Budgets (PDB): Set up PD8s to ensure that a minimum number of pods remain running for each microservice, even during upgrades or disruptions. 8. Least Privilege: Follow the principle of least privilege, only granting each microservice the minimum access it needs to perform its function.
질문 # 23
......
CKS퍼펙트 덤프공부자료: https://www.pass4test.net/CKS.html
Pass4Test CKS 최신 PDF 버전 시험 문제집을 무료로 Google Drive에서 다운로드하세요: https://drive.google.com/open?id=1ozkZxFElzJf0HmnXN-Via6BOMH3KcjJY