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[General] 100% Pass High-quality Linux Foundation - KCSA Test Sample Online

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【General】 100% Pass High-quality Linux Foundation - KCSA Test Sample Online

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Linux Foundation KCSA Exam Syllabus Topics:
TopicDetails
Topic 1
  • Kubernetes Cluster Component Security: This section of the exam measures the skills of a Kubernetes Administrator and focuses on securing the core components that make up a Kubernetes cluster. It encompasses the security configuration and potential vulnerabilities of essential parts such as the API server, etcd, kubelet, container runtime, and networking elements, ensuring each component is hardened against attacks.
Topic 2
  • Platform Security: This section of the exam measures the skills of a Cloud Security Architect and encompasses broader platform-wide security concerns. This includes securing the software supply chain from image development to deployment, implementing observability and service meshes, managing Public Key Infrastructure (PKI), controlling network connectivity, and using admission controllers to enforce security policies.
Topic 3
  • Compliance and Security Frameworks: This section of the exam measures the skills of a Compliance Officer and focuses on applying formal structures to ensure security and meet regulatory demands. It covers working with industry-standard compliance and threat modeling frameworks, understanding supply chain security requirements, and utilizing automation tools to maintain and prove an organization's security posture.
Topic 4
  • Kubernetes Security Fundamentals: This section of the exam measures the skills of a Kubernetes Administrator and covers the primary security mechanisms within Kubernetes. This includes implementing pod security standards and admissions, configuring robust authentication and authorization systems like RBAC, managing secrets properly, and using network policies and audit logging to enforce isolation and monitor cluster activity.
Topic 5
  • Kubernetes Threat Model: This section of the exam measures the skills of a Cloud Security Architect and involves identifying and mitigating potential threats to a Kubernetes cluster. It requires understanding common attack vectors like privilege escalation, denial of service, malicious code execution, and network-based attacks, as well as strategies to protect sensitive data and prevent an attacker from gaining persistence within the environment.

Linux Foundation Kubernetes and Cloud Native Security Associate Sample Questions (Q45-Q50):NEW QUESTION # 45
A cluster administrator wants to enforce the use of a different container runtime depending on the application a workload belongs to.
  • A. By configuring avalidating admission controllerwebhook that verifies the container runtime based on the application label and rejects requests that do not comply.
  • B. By modifying the kube-apiserver configuration file to specify the desired container runtime for each application.
  • C. By configuring amutating admission controllerwebhook that intercepts new workload creation requests and modifies the container runtime based on the application label.
  • D. By manually modifying the container runtime for each workload after it has been created.
Answer: C
Explanation:
* Kubernetes supports workload-specific runtimes viaRuntimeClass.
* Amutating admission controllercan enforce this automatically by:
* Intercepting workload creation requests.
* Modifying the Pod spec to set runtimeClassName based on labels or policies.
* Incorrect options:
* (A) Manual modification is not scalable or secure.
* (B) kube-apiserver cannot enforce per-application runtime policies.
* (C) A validating webhook can onlyreject, not modify, the runtime.
References:
Kubernetes Documentation - RuntimeClass
CNCF Security Whitepaper - Admission controllers for enforcing runtime policies.

NEW QUESTION # 46
An attacker has successfully overwhelmed the Kubernetes API server in a cluster with a single control plane node by flooding it with requests.
How would implementing a high-availability mode with multiple control plane nodes mitigate this attack?
  • A. By distributing the workload across multiple API servers, reducing the load on each server.
  • B. By increasing the resources allocated to the API server, allowing it to handle a higher volume of requests.
  • C. By implementing network segmentation to isolate the API server from the rest of the cluster, preventing the attack from spreading.
  • D. By implementing rate limiting and throttling mechanisms on the API server to restrict the number of requests allowed.
Answer: A
Explanation:
* Inhigh-availability clusters, multiple API server instances run behind a load balancer.
* Thisdistributes client requests across multiple API servers, preventing a single API server from being overwhelmed.
* Exact extract (Kubernetes Docs - High Availability Clusters):
* "A highly available control plane runs multiple instances of kube-apiserver, typically fronted by a load balancer, so that if one instance fails or is overloaded, others continue serving requests."
* Other options clarified:
* A: Network segmentation does not directly mitigate API server DoS.
* C: Adding resources helps, but doesn't solve single-point-of-failure.
* D: Rate limiting is a valid mitigation but not provided by HA alone.
References:
Kubernetes Docs - Building High-Availability Clusters: https://kubernetes.io/docs/setup/production- environment/tools/kubeadm/high-availability/

NEW QUESTION # 47
By default, in a Kubeadm cluster, which authentication methods are enabled?
  • A. X509 Client Certs, Webhook Authentication, and Service Account Tokens
  • B. OIDC, Bootstrap tokens, and Service Account Tokens
  • C. X509 Client Certs, Bootstrap Tokens, and Service Account Tokens
  • D. X509 Client Certs, OIDC, and Service Account Tokens
Answer: C
Explanation:
* In akubeadm cluster, by default the API server enables several authentication mechanisms:
* X509 Client Certs: Used for authenticating kubelets, admins, and control-plane components.
* Bootstrap Tokens: Temporary credentials used for node bootstrap/joining clusters.
* Service Account Tokens: Used by workloads in pods to authenticate with the API server.
* Exact extract (Kubernetes Docs - Authentication):
* "Kubernetes uses client certificates, bearer tokens, an authenticating proxy, or HTTP basic auth to authenticate API requests."
* "Bootstrap tokens are a simple bearer token that is meant to be used when creating new clusters or joining new nodes to an existing cluster."
* "Service accounts are special accounts that provide an identity for processes that run in a Pod." References:
Kubernetes Docs - Authentication: https://kubernetes.io/docs/refer ... thz/authentication/ Kubeadm - TLS Bootstrapping: https://kubernetes.io/docs/refer ... z/bootstrap-tokens/

NEW QUESTION # 48
What is the main reason an organization would use a Cloud Workload Protection Platform (CWPP) solution?
  • A. To protect containerized workloads from known vulnerabilities and malware threats.
  • B. To automate the deployment and management of containerized workloads.
  • C. To manage networking between containerized workloads in the Kubernetes cluster.
  • D. To optimize resource utilization and scalability of containerized workloads.
Answer: A
Explanation:
* CWPP (Cloud Workload Protection Platform):As defined by Gartner and adopted across cloud security practices, CWPPs are designed tosecure workloads(VMs, containers, serverless functions) in hybrid and cloud environments.
* They providevulnerability scanning, runtime protection, compliance checks, and malware detection.
* Exact extract (Gartner CWPP definition):"Cloud workload protection platforms protect workloads regardless of location, including physical machines, VMs, containers, and serverless workloads. They provide vulnerability management, system integrity protection, intrusion detection and prevention, and malware protection." References:
Gartner: Cloud Workload Protection Platforms Market Guide (summary): https://www.gartner.com/reviews
/market/cloud-workload-protection-platforms
CNCF Security Whitepaper:https://github.com/cncf/tag-security

NEW QUESTION # 49
What is the purpose of the Supplier Assessments and Reviews control in the NIST 800-53 Rev. 5 set of controls for Supply Chain Risk Management?
  • A. To conduct regular audits of suppliers' financial performance.
  • B. To evaluate and monitor existing suppliers for adherence to security requirements.
  • C. To establish contractual agreements with suppliers.
  • D. To identify potential suppliers for the organization.
Answer: B
Explanation:
* In NIST SP 800-53 Rev. 5,SR-6: Supplier Assessments and Reviewsrequires evaluating and monitoring suppliers' security and risk practices.
* Exact extract (NIST SP 800-53 Rev. 5, SR-6):
* "The organization assesses and monitors suppliers to ensure they are meeting the security requirements specified in contracts and agreements."
* This is aboutongoing monitoringof supplier adherence, not financial audits, not contract creation, and not supplier discovery.
References:
NIST SP 800-53 Rev. 5, Control SR-6 (Supplier Assessments and Reviews): https://csrc.nist.gov/publications
/detail/sp/800-53/rev-5/final

NEW QUESTION # 50
......
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