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Linux Foundation KCSA Exam Syllabus Topics:

Topic
Details

Topic 1

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 2

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 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.

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Linux Foundation Kubernetes and Cloud Native Security Associate Sample Questions (Q45-Q50):

NEW QUESTION # 45
Which of the following is a control for Supply Chain Risk Management according to NIST 800-53 Rev. 5?

A. Access Control
B. System and Communications Protection
C. Incident Response
D. Supply Chain Risk Management Plan

Answer: D

Explanation:
* NIST SP 800-53 Rev. 5 introduces a dedicated family of controls calledSupply Chain Risk Management (SR).
* Within SR,SR-2 (Supply Chain Risk Management Plan)is a specific control.
* Exact extract from NIST 800-53 Rev. 5:
* "The organization develops and implements a supply chain risk management plan for the system, system component, or system service."
* While Access Control, System and Communications Protection, and Incident Response are control families, the correctsupply chain-specific controlis theSupply Chain Risk Management Plan (SR-2).
References:
NIST SP 800-53 Rev. 5 -Security and Privacy Controls for Information Systems and Organizations:
https://csrc.nist.gov/publications/detail/sp/800-53/rev-5/final

NEW QUESTION # 46
Which label should be added to the Namespace to block any privileged Pods from being created in that Namespace?

A. privileged: true
B. pod.security.kubernetes.io/privileged: false
C. privileged: false
D. pod-security.kubernetes.io/enforce: baseline

Answer: D

Explanation:
* KubernetesPod Security Admission (PSA)enforcesPod Security Standardsby applying labels on Namespaces.
* Exact extract (Kubernetes Docs - Pod Security Admission):
* "You can label a namespace with pod-security.kubernetes.io/enforce: baseline to enforce the Baseline policy."
* Thebaselineprofile explicitly disallowsprivileged podsand other unsafe features.
* Why others are wrong:
* A & D: These labels do not exist in Kubernetes.
* B: Setting privileged: true would allow privileged pods, not block them.
References:
Kubernetes Docs - Pod Security Admission: https://kubernetes.io/docs/concepts/security/pod-security- admission/ Kubernetes Docs - Pod Security Standards: https://kubernetes.io/docs/concepts/security/pod-security- standards/

NEW QUESTION # 47
Given a standard Kubernetes cluster architecture comprising a single control plane node (hosting bothetcdand the control plane as Pods) and three worker nodes, which of the following data flows crosses atrust boundary
?

A. From kubelet to Container Runtime
B. From API Server to Container Runtime
C. From kubelet to API Server
D. From kubelet to Controller Manager

Answer: C

Explanation:
* Trust boundariesexist where data flows between different security domains.
* In Kubernetes:
* Communication between thekubelet (node agent)and theAPI Server (control plane)crosses the node-to-control-plane trust boundary.
* (A) Kubelet to container runtime is local, no boundary crossing.
* (C) Kubelet does not communicate directly with the controller manager.
* (D) API server does not talk directly to the container runtime; it delegates to kubelet.
* Therefore, (B) is the correct trust boundary crossing flow.
References:
CNCF Security Whitepaper - Kubernetes Threat Model: identifies node-to-control-plane communications (kubelet # API Server) as crossing trust boundaries.
Kubernetes Documentation - Cluster Architecture

NEW QUESTION # 48
Which technology can be used to apply security policy for internal cluster traffic at the application layer of the network?

A. Service Mesh
B. Ingress Controller
C. Container Runtime
D. Network Policy

Answer: A

Explanation:
* 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/

NEW QUESTION # 49
Which of the following is a valid security risk caused by having no egress controls in a Kubernetes cluster?

A. Denial of Service
B. Data exfiltration
C. Increased attack surface
D. Unauthorized access to external resources

Answer: B

Explanation:
* Egress NetworkPoliciesrestrict outbound traffic from Pods.
* Without egress restrictions, a compromised Pod could exfiltrate sensitive data (secrets, logs, customer data) to an attacker-controlled server.
* Exact extract (Kubernetes Docs - Network Policies):
* "Egress rules control outbound connections from Pods. Without such restrictions, compromised workloads can connect freely to external endpoints."
* Other options clarified:
* A: DoS is more about flooding, not egress absence.
* C: "Increased attack surface" is vague but not the main risk.
* D: True in a sense, but the precise and most common risk isdata exfiltration.
References:
Kubernetes Docs - Network Policies: https://kubernetes.io/docs/concepts/services-networking/network- policies/

NEW QUESTION # 50
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