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Pass Guaranteed Latest KCSA - Linux Foundation Kubernetes and Cloud Native Secur

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Pass Guaranteed Latest KCSA - Linux Foundation Kubernetes and Cloud Native Secur

Posted at yesterday 23:46      View：25 | Replies：1        Print      Only Author   [Copy Link] 1#
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Linux Foundation KCSA Exam Syllabus Topics:
TopicDetails
Topic 1
  • 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.
Topic 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.
Topic 3
  • 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 4
  • 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 5
  • 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.

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Linux Foundation Kubernetes and Cloud Native Security Associate Sample Questions (Q33-Q38):NEW QUESTION # 33
An attacker has access to the network segment that the cluster is on.
What happens when a compromised Pod attempts to connect to the API server?
  • A. The compromised Pod connects to the API server and is granted elevated privileges by default.
  • B. The compromised Pod attempts to connect to the API server, but its requests may be blocked due to network policies.
  • C. The compromised Pod is automatically isolated from the network to prevent any connections to the API server.
  • D. The compromised Pod is allowed to connect to the API server without any restrictions.
Answer: B
Explanation:
* By default,Pods can connect to the API server(since ServiceAccount tokens are mounted).
* However, whether they succeed in acting depends on:
* Network Policies(may block egress).
* RBAC(controls permissions).
* Exact extract (Kubernetes Docs - API Access):
* "Pods authenticate to the API server using the service account token mounted into the Pod.
Authorization is then enforced by RBAC. NetworkPolicies may further restrict access."
* Clarifications:
* A: No default automatic isolation.
* B: Not always unrestricted; policies may apply.
* D: Pods get minimal default privileges, not automatic elevation.
References:
Kubernetes Docs - API Access to Pods: https://kubernetes.io/docs/concepts/security/service-accounts/ Kubernetes Docs - Network Policies: https://kubernetes.io/docs/concepts/services-networking/network- policies/

NEW QUESTION # 34
A container running in a Kubernetes cluster has permission to modify host processes on the underlying node.
What combination of privileges and capabilities is most likely to have led to this privilege escalation?
  • A. hostPID and SYS_PTRACE
  • B. hostNetwork and NET_RAW
  • C. hostPath and AUDIT_WRITE
  • D. There is no combination of privileges and capabilities that permits this.
Answer: A
Explanation:
* hostPID:When enabled, the container shares the host's process namespace # container can see and potentially interact with host processes.
* SYS_PTRACE capability:Grants the container the ability to trace, inspect, and modify other processes (e.g., via ptrace).
* Combination of hostPID + SYS_PTRACE allows a container toattach to and modify host processes, which is a direct privilege escalation.
* Other options explained:
* hostPath + AUDIT_WRITE:hostPath exposes filesystem paths but does not inherently allow process modification.
* hostNetwork + NET_RAW:grants raw socket access but only for networking, not host process modification.
* A:Incorrect - such combinationsdo exist(like B).
References:
Kubernetes Docs - Configure a Pod to use hostPID: https://kubernetes.io/docs/tasks/configure-pod-container
/share-process-namespace/
Linux Capabilities man page: https://man7.org/linux/man-pages/man7/capabilities.7.html

NEW QUESTION # 35
What is the reasoning behind considering the Cloud as the trusted computing base of a Kubernetes cluster?
  • A. The Cloud enforces security controls at the Kubernetes cluster level, so application developers can focus on applications only.
  • B. A vulnerability in the Cloud layer has a negligible impact on containers due to Linux isolation mechanisms.
  • C. A Kubernetes cluster can only be trusted if the underlying Cloud provider is certified against international standards.
  • D. A Kubernetes cluster can only be as secure as the security posture of its Cloud hosting.
Answer: D
Explanation:
* The4C's of Cloud Native Security(Cloud, Cluster, Container, Code) model starts withCloudas the base layer.
* If the Cloud (infrastructure layer) is compromised, every higher layer (Cluster, Container, Code) inherits that compromise.
* Exact extract (Kubernetes Security Overview):
* "The 4C's of Cloud Native security are Cloud, Clusters, Containers, and Code. You can think of the 4C's as a layered approach. A Kubernetes cluster can only be as secure as the cloud infrastructure it is deployed on."
* This means the cloud is part of thetrusted computing baseof a Kubernetes cluster.
References:
Kubernetes Docs - Security Overview (4C's): https://kubernetes.io/docs/concepts/security/overview/#the-
4cs-of-cloud-native-security

NEW QUESTION # 36
Which information does a user need to verify a signed container image?
  • A. The image's SHA-256 hash and the private key of the signing authority.
  • B. The image's digital signature and the public key of the signing authority.
  • C. The image's SHA-256 hash and the public key of the signing authority.
  • D. The image's digital signature and the private key of the signing authority.
Answer: B
Explanation:
* Container image signing (e.g., withcosign, Notary v2) uses asymmetric cryptography.
* Verification process:
* Retrieve theimage's digital signature.
* Validate the signature with thepublic keyof the signer.
* Exact extract (Sigstore Cosign Docs):
* "Verification of an image requires the signature and the signer's public key. The signature proves authenticity and integrity."
* Why others are wrong:
* A & B: The private key is only used by the signer, never shared.
* C: The hash alone cannot prove authenticity without the digital signature.
References:
Sigstore Cosign Docs: https://docs.sigstore.dev/cosign/overview

NEW QUESTION # 37
How do Kubernetes namespaces impact the application of policies when using Pod Security Admission?
  • A. Namespaces are ignored; Pod Security Admission policies apply cluster-wide only.
  • B. The default namespace enforces the strictest security policies by default.
  • C. Different policies can be applied to specific namespaces.
  • D. Each namespace can have only one active policy.
Answer: C
Explanation:
* Pod Security Admission (PSA)enforces policies by applyinglabels on namespaces, not globally across the cluster.
* Exact extract (Kubernetes Docs - Pod Security Admission):
* "You can apply Pod Security Standards to namespaces by adding labels such as pod- security.kubernetes.io/enforce. Different namespaces can enforce different policies."
* Clarifications:
* A: Incorrect, namespaces are the unit of enforcement.
* C: Misleading - a namespace can have multiple enforcement modes (enforce, audit, warn).
* D: Default namespace doesnotenforce strict policies unless labeled.
References:
Kubernetes Docs - Pod Security Admission: https://kubernetes.io/docs/concepts/security/pod-security- admission/

NEW QUESTION # 38
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