最新的KCSA套裝＆認證考試資格材料和正確的KCSA在線題庫
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Linux Foundation KCSA 考試大綱：

主題簡介
主題 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.
主題 2
  • Overview of Cloud Native Security: This section of the exam measures the skills of a Cloud Security Architect and covers the foundational security principles of cloud-native environments. It includes an understanding of the 4Cs security model, the shared responsibility model for cloud infrastructure, common security controls and compliance frameworks, and techniques for isolating resources and securing artifacts like container images and application code.
主題 3
  • 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.

>> KCSA套裝 <<

KCSA套裝 &有效Linux Foundation KCSA在線題庫：Linux Foundation Kubernetes and Cloud Native Security Associate

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最新的 Kubernetes and Cloud Native KCSA 免費考試真題 (Q49-Q54):

問題 #49
A container image istrojanizedby an attacker by compromising the build server. Based on the STRIDE threat modeling framework, which threat category best defines this threat?

答案：A

解題說明：
* In STRIDE,Tamperingis the threat category forunauthorized modification of data or code/artifacts. A trojanized container image is, by definition, an attacker'smodificationof the build output (the image) after compromising the CI/build system-i.e., tampering with the artifact in the software supply chain.
* Why not the others?
* Spoofingis about identity/authentication (e.g., pretending to be someone/something).
* Repudiationis about denying having performed an action without sufficient audit evidence.
* Denial of Servicetargets availability (exhausting resources or making a service unavailable).The scenario explicitly focuses on analtered imageresulting from a compromised build server-this squarely maps toTampering.
Authoritative references (for verification and deeper reading):
* Kubernetes (official docs)- Supply Chain Security (discusses risks such as compromised CI/CD pipelines leading to modified/poisoned images and emphasizes verifying image integrity/signatures).
* Kubernetes Docs#Security#Supply chain securityandSecuring a cluster(sections on image provenance, signing, and verifying artifacts).
* CNCF TAG Security - Cloud Native Security Whitepaper (v2)- Threat modeling in cloud-native and software supply chain risks; describes attackers modifying build outputs (images/artifacts) via CI
/CD compromise as a form oftamperingand prescribes controls (signing, provenance, policy).
* CNCF TAG Security - Software Supply Chain Security Best Practices- Explicitly covers CI/CD compromise leading tomaliciously modified imagesand recommends SLSA, provenance attestation, and signature verification (policy enforcement via admission controls).
* Microsoft STRIDE (canonical reference)- DefinesTamperingasmodifying data or code, which directly fits a trojanized image produced by a compromised build system.


問題 #50
In Kubernetes, what isPublic Key Infrastructure (PKI)used for?

答案：B

解題說明：
* Kubernetes usesPKI certificatesextensively to secure communication between control plane components (API server, etcd, kube-scheduler, kube-controller-manager) and with kubelets.
* Certificates enablemutual TLS authentication and encryptionacross components.
* PKI does not handle scaling, networking, or monitoring.
References:
Kubernetes Documentation - Certificates
CNCF Security Whitepaper - Cluster communication security and the role of PKI.


問題 #51
In which order are thevalidating and mutating admission controllersrun while the Kubernetes API server processes a request?

答案：C

解題說明：
* Theadmission control flowin Kubernetes:
* Mutating admission controllersrun first and can modify incoming requests.
* Validating admission controllersrun after mutations to ensure the final object complies with policies.
* This ensures policies validate thefinal, mutated object.
References:
Kubernetes Documentation - Admission Controllers
CNCF Security Whitepaper - Admission control workflow.


問題 #52
Which technology can be used to apply security policy for internal cluster traffic at the application layer of the network?

答案：A

解題說明：
* Service Mesh (e.g., Istio, Linkerd, Consul):operates atLayer 7 (application layer), enforcing policies like mTLS, authorization, and routing between services.
* NetworkPolicy:works atLayer 3/4 (IP/port), not Layer 7.
* Ingress Controller:handles external traffic ingress, not internal service-to-service traffic.
* Container Runtime:responsible for running containers, not enforcing application-layer security.
Exact extract (Istio docs):
* "Istio provides security by enforcing authentication, authorization, and encryption of service-to- service communication." References:
Kubernetes Docs - Network Policies: https://kubernetes.io/docs/concepts/services-networking/network- policies/ Istio Security Docs: https://istio.io/latest/docs/concepts/security/


問題 #53
Which of the following statements best describes the role of the Scheduler in Kubernetes?

答案：D

解題說明：
* TheKubernetes Schedulerassigns Pods to nodes based on:
* Resource requests & availability (CPU, memory, GPU, etc.)
* Constraints (affinity, taints, tolerations, topology, policies)
* Exact extract (Kubernetes Docs - Scheduler):
* "The scheduler is a control plane process that assigns Pods to Nodes. Scheduling decisions take into account resource requirements, affinity/anti-affinity, constraints, and policies."
* Other options clarified:
* A: Monitoring cluster health is theController Manager's/kubelet's job.
* B: Security is enforced throughRBAC, admission controllers, PSP/PSA, not the scheduler.
* C: Deployment scaling is handled by theController Manager(Deployment/ReplicaSet controller).
References:
Kubernetes Docs - Scheduler: https://kubernetes.io/docs/concepts/scheduling-eviction/kube-scheduler/


問題 #54
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