그리고 Itcertkr CKS 시험 문제집의 전체 버전을 클라우드 저장소에서 다운로드할 수 있습니다: https://drive.google.com/open?id=1hoF5EPHehd9pxWzOAQ4bku0kP6TN2uGh
Itcertkr의 연구팀에서는Linux Foundation CKS인증덤프만 위하여 지금까지 노력해왔고 Itcertkr 학습가이드Linux Foundation CKS덤프로 시험이 어렵지 않아졌습니다. Itcertkr는 100%한번에Linux Foundation CKS이장시험을 패스할 것을 보장하며 우리가 제공하는 문제와 답을 시험에서 백프로 나올 것입니다.여러분이Linux Foundation CKS시험에 응시하여 우리의 도움을 받는다면 Itcertkr에서는 꼭 완벽한 자료를 드릴 것을 약속합니다. 또한 일년무료 업데이트서비스를 제공합니다.즉 문제와 답이 갱신이 되었을 경우 우리는 여러분들한테 최신버전의 문제와 답을 다시 보내드립니다.
Linux Foundation CKS (Certified Kubernetes Security Specialist) 인증 시험은 Kubernetes 보안 분야에서 전문성을 인증하는 뛰어난 기회입니다. 이는 Kubernetes 환경에서 보안 위협을 식별하고 완화하는 능력을 시험하는 어려운 시험입니다. 이 인증서는 고용주들에게 높이 평가되며 전문가들이 Kubernetes 보안 분야에서 경력을 쌓는 뛰어난 방법입니다.
현재 많은 IT인사들이 같은 생각하고 잇습니다. 그것은 바로Linux Foundation CKS인증시험자격증 취득으로 하여 IT업계의 아주 중요한 한걸음이라고 말입니다.그만큼Linux Foundation CKS인증시험의 인기는 말 그대로 하늘을 찌르고 잇습니다,
CKS 인증은 Kubernetes 및 컨테이너화 된 응용 프로그램과 함께 일하는 IT 전문가에게 귀중한 자격 증명입니다. 그것은 작업에서 최고 수준의 보안 표준을 유지하겠다는 후보자의 약속을 보여주고 구직 시장에서 경쟁 우위를 제공합니다. 인증 시험은 엄격하고 도전적이며 응시자가 Kubernetes 보안 모범 사례를 강력하게 이해해야합니다. 그러나 성공적인 후보자들은 Kubernetes 환경을 확보하고 사이버 위협으로부터 조직을 보호 할 수있는 기술과 지식을 갖게되므로 보람있는 경험입니다.
CKS 자격증 시험은 Kubernetes 관리 경험이 최소 2년 이상이 있고 보안 원칙과 관행에 대한 견고한 이해를 갖고 있는 전문가들을 대상으로 합니다. 후보자들은 엄격한 성능 기반 시험을 통해 Kubernetes 보안 능력을 증명해야 합니다. 이 시험은 인증, 권한 부여, 네트워크 정책 및 배포 보안 등 다양한 보안 주제를 다루는 15-20개의 성능 기반 과제로 구성됩니다.
질문 # 41
You are running a highly sensitive application in your Kubernetes cluster, which stores personal identifiable information (PII) dat
a. You suspect that a malicious actor might have injected a malicious container image into your cluster and is now attempting to exfiltrate this data. You need to implement a solution to detect and prevent any suspicious data exfiltration attempts from within your cluster.
정답：
설명：
Solution (Step by Step):
1. Enable Container Security Policies (CSP) with Admission Control:
- Configure a CSP policy using the 'PodSecurityPolicy' or the newer 'PodSecurity' object.
- Restrict network egress for containers running your sensitive application to only allow communication to approved external services and destinations.
- Define rules within the CSP policy tnat disallow any container from accessing privileged ports or using privileged capabilities. This will limit the
attackers ability to establish unauthorized connections or manipulate system resources.
- Example CSP policy With 'P0dSecurity'
2. Implement Network Policies: - Configure network policies to restrict outbound network traffic from pods running tne sensitive application. - Allow only specific ports and destinations required tor the application's functionality. - This step helps prevent any unauthorized connections from the compromised container to external networks. - Example Network Policy:
3. Deploy Intrusion Detection Systems (IDS) in the Cluster: - Deploy an IDS solution like Falco or Sysdig within your cluster. - Configure Falco to monitor for suspicious activities like file system modifications, network connections, or process executions that might indicate data exfiltration attempts. - Falco can trigger alerts and block malicious activities based on the defined rules. - Example Falco rule:
4. Utilize Runtime Security Tools: - Deploy a runtime security tool like Aqua Security, Twistlock, or Snyk. - These tools monitor running containers for suspicious behaviors and vulnerabilities. - They can enforce security policies, detect anomalies, and alen you about potential data breaches. - This helps you quickly identify compromised containers and take appropriate actions. 5. Implement Data Encryption and Access Control: - Encrypt the PII data stored in your Kubernetes cluster at rest and in transit - Utilize tools like Vault or KMS to manage and secure encryption keys. - Implement access control measures to limit access to sensitive data to authorized users and applications. - This minimizes the impact of a data breach even if the malicious container gains access to the data. By combining these security measures, you can significantly reduce the risk of data exfiltration and enhance the security posture of your sensitive application running in the Kubernetes cluster.
질문 # 42
You have a Dockefflle that defines a container image for a web application. You need to use KubeLinter to analyze the Dockerfile for security best practices and Kubernetes compatibility issues. Implement a solution that integrates KubeLinter into your CI/CD pipeline to automatically scan the DockerTile whenever it is modified.
정답：
설명：
Solution (Step by Step):
1. Install KubeLinter: Download and install the 'kubevar binary from the Official GitHub repository.
2. Create a KubeLinter configuration file: Define a .kubeval.yaml' file in the root directory of your project to specify any custom rules or checks. For example, you can disable specific checks or define your own checks.
3. Integrate KubeLinter into your CI/CD pipeline: Add a step to your pipeline that runs KubeLinter against your Dockerfile. This step should be executed whenever the Docket-file is modified.
4. Configure KubeLinterto fail the pipeline if any issues are found: This will ensure that any security or compatibility issues are addressed before the image is deployed to your Kubernetes cluster.
5. Review and address any issues reported by KubeLinter. Analyze the output of KubeLinter and make the necessary changes to your Dockerflle to address any identified issues.
질문 # 43
Before Making any changes build the Dockerfile with tag base:v1
Now Analyze and edit the given Dockerfile(based on ubuntu 16:04)
Fixing two instructions present in the file, Check from Security Aspect and Reduce Size point of view.
Dockerfile:
FROM ubuntu:latest
RUN apt-get update -y
RUN apt install nginx -y
COPY entrypoint.sh /
RUN useradd ubuntu
ENTRYPOINT ["/entrypoint.sh"]
USER ubuntu
entrypoint.sh
#!/bin/bash
echo "Hello from CKS"
After fixing the Dockerfile, build the docker-image with the tag base:v2
정답：A
질문 # 44
You are working on a Kubernetes cluster that has a deployment named 'web-app'. The deployment is currently running on a single node. You need to implement a pod disruption budget (PDB) for this deployment to ensure that at least 2 out of 3 pods are always available during a rolling update. How would you implement a pod disruption budget (PD8) to achieve this, and what commands would you use to ensure that at least 2 out of 3 pods are always available during a rolling update.
정답：
설명：
Solution (Step by Step) :
1. Create a Pod Disruption Budget (PDB):
- Create a YAML file named 'web-app-pdb.yamr with the following content:
- Apply the PDB using 'kubectl apply -f web-app-pdb.yaml' 2. Verify the PDB Creation: - Use the command 'kubectl get pdb' to list all existing PDBs- - Check that the 'web-app-pdb' is listed With the desired configuration. 3. Initiate a Rolling Update: - Perform a rolling update for the 'web-app' deployment using the command 'kubectl rollout restart deployment web-apps 4. Monitor the IJpdate Process: - Use the command 'kuoectl get pods -l app=web-app' to monitor the status of the pods during the rolling update. - Ensure that at least two pods are always running, even during pod termination and replacement. 5. Check for PDB Enforcement: - If the rolling update tries to disrupt more than one pod, the PDB should prevent the update from proceeding. - You'll see an error message indicating that the disruption budget is being enforced.
질문 # 45
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.
정답：
설명：
[controlplane@cli] $ k get pods -n nato -o yaml | grep "image: "
[controlplane@cli] $ trivy image <image-name>
[controlplane@cli] $ k delete pod <vulnerable-pod> -n nato
[desk@cli] $ ssh controlnode
[controlplane@cli] $ k get pods -n nato
NAME READY STATUS RESTARTS AGE
alohmora 1/1 Running 0 3m7s
c3d3 1/1 Running 0 2m54s
neon-pod 1/1 Running 0 2m11s
thor 1/1 Running 0 58s
[controlplane@cli] $ k get pods -n nato -o yaml | grep "image: "
[controlplane@cli] $ k delete pod thor -n nato
[controlplane@cli] $ k delete pod neon-pod -n nato Reference: https://github.com/aquasecurity/trivy
[controlplane@cli] $ k delete pod neon-pod -n nato Reference: https://github.com/aquasecurity/trivy
질문 # 46
......
CKS최신기출자료: https://www.itcertkr.com/CKS_exam.html
그리고 Itcertkr CKS 시험 문제집의 전체 버전을 클라우드 저장소에서 다운로드할 수 있습니다: https://drive.google.com/open?id=1hoF5EPHehd9pxWzOAQ4bku0kP6TN2uGh