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Linux Foundation KCSA Exam Syllabus Topics:

Topic	Details
Topic 1	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 2	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 3	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 4	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 5	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.

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Linux Foundation Kubernetes and Cloud Native Security Associate Sample Questions (Q18-Q23):

NEW QUESTION # 18
Which of the following statements best describe container image signing and verification in the cloud environment?

A. Container image signatures are mandatory in cloud environments, as cloud providers would deny the execution of unsigned container images.
B. Container image signatures are concerned with defining developer ownership of applications within multi-tenant environments.
C. Container image signatures affect the performance of containerized applications, as they increase the size of images with additional metadata.
D. Container image signatures and their verification ensure their authenticity and integrity against tampering.

Answer: D

Explanation:
* Image signing (withNotary, cosign, or similar tools) ensures that images are from a trusted source and have not been modified.
* Exact extract (Sigstore cosign docs):"Cosign allows you to sign and verify container images to ensure authenticity and integrity."
* Why others are wrong:
* B:Ownership can be inferred but it's aboutauthenticity & integritynot tenancy.
* C:Not mandatory; enforcement requiresadmission controllers.
* D:Metadata size is negligible and has no runtime performance impact.
References:
Sigstore Project: https://docs.sigstore.dev/cosign/overview
CNCF Security Whitepaper

NEW QUESTION # 19
In a Kubernetes cluster, what are the security risks associated with using ConfigMaps for storing secrets?

A. Storing secrets in ConfigMaps does not allow for fine-grained access control via RBAC.
B. ConfigMaps store sensitive information in etcd encoded in base64 format automatically, which does not ensure confidentiality of data.
C. Using ConfigMaps for storing secrets might make applications incompatible with the Kubernetes cluster.
D. Storing secrets in ConfigMaps can expose sensitive information as they are stored in plaintext and can be accessed by unauthorized users.

Answer: D

Explanation:
* ConfigMaps are explicitly not for confidential data.
* Exact extract (ConfigMap concept):"A ConfigMap is an API object used to store non- confidential data in key-value pairs."
* Exact extract (ConfigMap concept):"ConfigMaps are not intended to hold confidential data. Use a Secret for confidential data."
* Why this is risky:data placed into a ConfigMap is stored as regular (plaintext) string values in the API and etcd (unless you deliberately use binaryData for base64 content you supply). That means if someone has read access to the namespace or to etcd/APIServer storage, they can view the values.
* Secrets vs ConfigMaps (to clarify distractor D):
* Exact extract (Secret concept):"By default, secret data is stored as unencrypted base64- encoded strings.You canenable encryption at restto protect Secrets stored in etcd."
* This base64 behavior applies toSecrets, not to ConfigMap data. Thus optionDis incorrect for ConfigMaps.
* About RBAC (to clarify distractor A):Kubernetesdoessupport fine-grained RBAC forboth ConfigMaps and Secrets; the issue isn't lack of RBAC but that ConfigMaps arenotdesigned for confidential material.
* About compatibility (to clarify distractor C):Using ConfigMaps for secrets doesn't make apps
"incompatible"; it's simplyinsecureand against guidance.
References:
Kubernetes Docs -ConfigMaps: https://kubernetes.io/docs/concepts/configuration/configmap/ Kubernetes Docs -Secrets: https://kubernetes.io/docs/concepts/configuration/secret/ Kubernetes Docs -Encrypting Secret Data at Rest: https://kubernetes.io/docs/tasks/administer-cluster
/encrypt-data/
Note: The citations above are from the official Kubernetes documentation and reflect the stated guidance that ConfigMaps are fornon-confidentialdata, while Secrets (with encryption at rest enabled) are forconfidential data, and that the 4C's map todefense in depth.

NEW QUESTION # 20
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 kubelet to API Server
C. From kubelet to Controller Manager
D. From API Server to Container Runtime

Answer: B

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 # 21
Which security knowledge-base focuses specifically onoffensive tools, techniques, and procedures?

A. CIS Controls
B. OWASP Top 10
C. NIST Cybersecurity Framework
D. MITRE ATT&CK

Answer: D

Explanation:
* MITRE ATT&CKis a globally recognizedknowledge base of adversary tactics, techniques, and procedures (TTPs). It is focused on describingoffensive behaviorsattackers use.
* Incorrect options:
* (B)OWASP Top 10highlights common application vulnerabilities, not attacker techniques.
* (C)CIS Controlsare defensive best practices, not offensive tools.
* (D)NIST Cybersecurity Frameworkprovides a risk-based defensive framework, not adversary TTPs.
References:
MITRE ATT&CK Framework
CNCF Security Whitepaper - Threat intelligence section: references MITRE ATT&CK for describing attacker behavior.

NEW QUESTION # 22
Which other controllers are part of the kube-controller-manager inside the Kubernetes cluster?

A. Pod, Service, and Ingress controller
B. Job controller, CronJob controller, and DaemonSet controller
C. Replication controller, Endpoints controller, Namespace controller, and ServiceAccounts controller
D. Namespace controller, ConfigMap controller, and Secret controller

Answer: C

Explanation:
* kube-controller-managerruns a set of controllers that regulate the cluster's state.
* Exact extract (Kubernetes Docs):"The kube-controller-manager runs controllers that are core to Kubernetes. Examples of controllers are: Node controller, Replication controller, Endpoints controller, Namespace controller, and ServiceAccounts controller."
* Why D is correct:All listed are actual controllers within kube-controller-manager.
* Why others are wrong:
* A:Job and CronJob controllers are managed by kube-controller-manager, but DaemonSet controller is managed by the kube-scheduler/deployment logic.
* B:Pod, Service, Ingress controllers are not part of kube-controller-manager.
* C:ConfigMap and Secret do not have dedicated controllers.
References:
Kubernetes Docs - kube-controller-manager: https://kubernetes.io/docs/reference/command-line-tools- reference/kube-controller-manager/

NEW QUESTION # 23
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