BONUS!!! Fast2test CKS 시험 문제집 전체 버전을 무료로 다운로드하세요: https://drive.google.com/open?id=1qYmAlKHVCh5ZHRN3lkHNcyQWv2udHWG4
Fast2test는 유일하게 여러분이 원하는Linux Foundation인증CKS시험관련자료를 해결해드릴 수 잇는 사이트입니다. 여러분이 다른 사이트에서도 관련덤프자료를 보셨을경우 페이지 아래를 보면 자료출처는 당연히 Fast2test 일 것입니다. Fast2test의 자료만의 제일 전면적이고 또 최신 업데이트일 것입니다.
CKS 시험은 인증 및 승인, 네트워크 보안, 컨테이너 보안 및 클러스터 강화와 관련된 Kubernetes 보안에 대한 다양한 주제를 다룹니다. 이 시험은 이론적 지식과 실무 기술 모두를 테스트하도록 설계되어 있으며, 후보자는 다양한 보안 도구와 기술을 사용하여 Kubernetes 환경을 안전하게 보호하는 능력을 증명해야 합니다. 이 시험은 온라인으로 진행되며, 2시간 안에 완료해야 하는 15~20개의 성과 기반 과제로 구성됩니다.
>> Linux Foundation CKS최고품질 인증시험 대비자료 <<
Fast2test 안에는 아주 거대한IT업계엘리트들로 이루어진 그룹이 있습니다. 그들은 모두 관련업계예서 권위가 있는 전문가들이고 자기만의 지식과 지금까지의 경험으로 최고의 IT인증관련자료를 만들어냅니다. Fast2test의 CKS문제와 답은 정확도가 아주 높으며 한번에 패스할수 있는 100%로의 보장도를 자랑하며 그리고 또 일년무료 업데이트를 제공합니다.
CKS 인증을 받으려면 응시자에게는 현재 인증 된 Kubernetes 관리자 (CKA) 인증 또는 Kubernetes 기초 (LFS258) 과정의 통과 점수가 있어야합니다. CKS 인증 시험은 15 ~ 20 개의 성능 기반 작업으로 구성된 온라인 시험입니다. 응시자는 시험을 마치는 데 2 시간이 걸리며 66% 이상을 합격해야합니다. 시험은 여러 언어로 제공되며 전 세계 어디에서나 가져올 수 있습니다.
질문 # 44
You are tasked with securing a Kubernetes cluster running a critical application. One of the security best practices you need to implement is to enforce the use of signed container images. You have access to a private container registry and a PKI system for generating and managing certificates. Explain in detail now you would implement this policy, covering steps like image signing, verification, and integration with Kubernetes.
정답：
설명：
Solution (Step by Step) :
1. Generate Certificate and Key:
- Use your PKI system to generate a certificate and private key for signing container images. This will be used to authenticate and verify the image's origin and integrity
- Choose appropriate key lengths and algorithms for security.
2. Sign Container Image:
-After building your container image, use the generated private key to sign it.
- Tools like 'cosign' or 'docker-content-trust' can be used for image signing.
- 'cosigns example:
bash
cosign sign --key my-private-key-pem nginx:latest
3. Push Signed Image to Registry:
- Push the signed image to your private container registry The signed image should include the signature and certificate.
4. Configure Kubernetes Image Policy:
- Implement an image policy in your Kubernetes cluster that enforces the verification of signatures for images pulled from your private registry
- You can use 'PodSecurityPolicy' or 'P0dSecurityAdmissioru for this purpose.
- Example 'PodSecurityPolicy' with image signature validation (this is a simplified example):
5. Configure Image Pull Secrets: - Create a Kubernetes Secret containing the public certificate used for verification. - You can then use 'imagePullSecrets' in your deployment resources to reference this secret. - Example:
6. Deploy Your Application - Once your image policy is configured, you can deploy your application using the signed images. - Kubernetes Will verify the signature before starting any pods.
질문 # 45
You're working on a Kubernetes cluster where container images are pulled from a private registry. Security best practices dictate that you should configure the cluster to only allow image pulls from authorized registries. Explain how you would enforce this policy using image admission controllers and provide a practical example of an admission control configuration.
정답：
설명：
Solution (Step by Step) :
1. Enable Image Admission Controller:
- Install the Admission Controller. The 'ImagePolicyWebhook' admission controller enforces policies on container images. You can install it as part of your Kubernetes deployment or using a Helm chart.
2. Create a Policy Configuration:
- Define the Policy: Use a YAML file to define the rules for the admission controller. This policy will specify the allowed registries.
- Example Policy Configuration:
3. Configure the Service: - Create a Service: Create a Kubernetes service that exposes the admission controllers endpoint. - Example Service Configuration:
4. Deploy the Policy Engine: - Create a Deployment: Create a Kubernetes deployment to run the policy engine (e.g., a container image with the admission controller logic). - Example Deployment Configuration:
5. Verify the Configuration: - Test Image Pulls: Attempt to pull images from both authorized and unauthorized registries. - Monitor tor Policy Enforcement: Observe the admission controllers logs to confirm that it iS successtully blocking pulls from unauthorized registries. - Validate Security: Ensure that the policy effectively prevents the use of unauthorized container image sources, enhancing the clusters security posture.
질문 # 46
SIMULATION
a. Retrieve the content of the existing secret named default-token-xxxxx in the testing namespace.
Store the value of the token in the token.txt
b. Create a new secret named test-db-secret in the DB namespace with the following content:
username: mysql
password: password@123
Create the Pod name test-db-pod of image nginx in the namespace db that can access test-db-secret via a volume at path /etc/mysql-credentials
정답：
설명：
To add a Kubernetes cluster to your project, group, or instance:
Navigate to your:
Project's Operations > Kubernetes page, for a project-level cluster.
Group's Kubernetes page, for a group-level cluster.
Admin Area > Kubernetes page, for an instance-level cluster.
Click Add Kubernetes cluster.
Click the Add existing cluster tab and fill in the details:
Kubernetes cluster name (required) - The name you wish to give the cluster.
Environment scope (required) - The associated environment to this cluster.
API URL (required) - It's the URL that GitLab uses to access the Kubernetes API. Kubernetes exposes several APIs, we want the "base" URL that is common to all of them. For example, https://kubernetes.example.com rather than https://kubernetes.example.com/api/v1.
Get the API URL by running this command:
kubectl cluster-info | grep -E 'Kubernetes master|Kubernetes control plane' | awk '/http/ {print $NF}' CA certificate (required) - A valid Kubernetes certificate is needed to authenticate to the cluster. We use the certificate created by default.
List the secrets with kubectl get secrets, and one should be named similar to default-token-xxxxx. Copy that token name for use below.
Get the certificate by running this command:
kubectl get secret <secret name> -o jsonpath="{['data']['ca\.crt']}"
질문 # 47
You have a Kubernetes cluster with a service account named 'default. This service account is used by multiple applications within the cluster, each requiring different access levels. Currently, 'default' has broad permissions, granting it access to manage deployments, secrets, and even perform cluster-wide operations. This poses a security risk.
How would you implement a strategy to restrict 'default's access to a minimal set of permissions while maintaining functionality for existing applications? Ensure you are using a principle of least privilege approach and demonstrate how you would test your implementation.
정답：
설명：
Solution (Step by Step) :
1. Identify and Separate Service Accounts:
- Determine the minimum set of permissions required by each application using the 'default service account.
- Create new service accounts with specific names (e.g., 'appl-sa', 'app2-sa', etc.) for each application.
2. Restrict 'default' Service Account:
- Remove unnecessary permissions from the 'default' service account.
- For example, you can restrict it to access only specific namespaces, specific resources within those namespaces, or specific operations on those resources.
3. Bind Service Accounts to Roles: - Create RoleBindings tnat associate the newly created service accounts with their respective roles.
4. Test Implementation: - Update your application deployments to use the new, restricted service accounts. - Run your applications and verify that they can access the resources they need but are prevented from unauthorized actions.
질문 # 48
You're tasked With securing a Kubernetes cluster for a sensitive application. The application utilizes a service account for accessing a database. However, due to legacy reasons, this service account has broad permissions, including 'read', 'write', and 'delete' access to all resources in the cluster. How would you mitigate this security risk while maintaining application functionality? Implement a solution that minimizes the permissions granted to the service account and adheres to the principle of least privilege.
정답：
설명：
Solution (Step by Step) :
1. Create a new Role With restricted permissions:
- Define a Role that grants only the necessary permissions for the service account to interact with the database.
- The Role should have specific permissions for 'read' , 'write' , and 'delete' operations, but limited to the database resources used by the application.
2. Create a RoleBinding: - Bind the newly created Role to the service account. - This will grant the service account the specific permissions defined in the Role.
3. Update the Deployment - Update the Deployment configuration to use the new service account with restricted permissions.
4. Validate the Permissions: - Verity that the application still functions correctly with the restricted permissions. - Use 'kubectl auth can-i --list --as=your-service-account' to confirm the available permissions for the service account. 5. Revoke the Legacy Service Account: - Once the application is running with the new service account, revoke the old service account with broad permissions.
질문 # 49
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CKS최신 업데이트 공부자료: https://kr.fast2test.com/CKS-premium-file.html
Fast2test CKS 최신 PDF 버전 시험 문제집을 무료로 Google Drive에서 다운로드하세요: https://drive.google.com/open?id=1qYmAlKHVCh5ZHRN3lkHNcyQWv2udHWG4