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【General】 KCSA Valid Test Practice - Certification KCSA Book Torrent

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Linux Foundation Kubernetes and Cloud Native Security Associate Sample Questions (Q37-Q42):NEW QUESTION # 37
What is the difference between gVisor and Firecracker?
  • A. gVisor and Firecracker are two names for the same technology, which provides isolation and security for containers.
  • B. gVisor is a lightweight virtualization technology for creating and managing secure, multi-tenant container and function-as-a-service (FaaS) workloads. At the same time, Firecracker is a user-space kernel that provides isolation and security for containers.
  • C. gVisor is a user-space kernel that provides isolation and security for containers. At the same time, Firecracker is a lightweight virtualization technology for creating and managing secure, multi-tenant container and function-as-a-service (FaaS) workloads.
  • D. gVisor and Firecracker are both container runtimes that can be used interchangeably.
Answer: C
Explanation:
* gVisor:
* Google-developed, implemented as auser-space kernelthat intercepts and emulates syscalls made by containers.
* Providesstrong isolationwithout requiring a full VM.
* Official docs: "gVisor is a user-space kernel, written in Go, that implements a substantial portion of the Linux system call interface."
* Source: https://gvisor.dev/docs/
* Firecracker:
* AWS-developed,lightweight virtualization technologybuilt on KVM, used in AWS Lambda and Fargate.
* Optimized for running secure, multi-tenant microVMs (MicroVMs) for containers and FaaS.
* Official docs: "Firecracker is an open-source virtualization technology that is purpose-built for creating and managing secure, multi-tenant container and function-based services."
* Source: https://firecracker-microvm.github.io/
* Key difference:gVisor # syscall interception in userspace kernel (container isolation). Firecracker # lightweight virtualization with microVMs (multi-tenant security).
* Therefore, optionAis correct.
References:
gVisor Docs: https://gvisor.dev/docs/
Firecracker Docs: https://firecracker-microvm.github.io/

NEW QUESTION # 38
Which of the following statements regarding a container run with privileged: true is correct?
  • A. A container run with privileged: true has no additional access to Secrets than if it were run with privileged: false.
  • B. A container run with privileged: true on a node can access all Secrets used on that node.
  • C. A container run with privileged: true within a cluster can access all Secrets used within that cluster.
  • D. A container run with privileged: true within a Namespace can access all Secrets used within that Namespace.
Answer: A
Explanation:
* Setting privileged: true grants a containerelevated access to the host node, including access to host devices, kernel capabilities, and the ability to modify the host.
* However, Secrets in Kubernetes are not automatically exposedto privileged containers. Secrets are mounted into Pods only if explicitly referenced.
* Thus, being privilegeddoes not grant additional access to Kubernetes Secretscompared to a non- privileged Pod.
* The risk lies in node compromise: if a privileged container can take over the node, it could then indirectly gain access to Secrets (e.g., by reading kubelet credentials).
References:
Kubernetes Documentation - Security Context
CNCF Security Whitepaper - Pod security context and privileged container risks.

NEW QUESTION # 39
As a Kubernetes and Cloud Native Security Associate, a user can set upaudit loggingin a cluster. What is the risk of logging every event at the fullRequestResponselevel?
  • A. No risk, as it provides the most comprehensive audit trail.
  • B. Improved security and easier incident investigation.
  • C. Increased storage requirements and potential impact on performance.
  • D. Reduced storage requirements and faster performance.
Answer: C
Explanation:
* Audit loggingrecords API server requests and responses for security monitoring.
* TheRequestResponse levellogs the full request and response bodies, which can:
* Significantly increasestorage and performance overhead.
* Potentially log sensitive data (including Secrets).
* Therefore, while comprehensive, it introduces risks of performance degradation and excessive log volume.
References:
Kubernetes Documentation - Auditing
CNCF Security Whitepaper - Logging and monitoring: trade-offs between verbosity, storage, and security.

NEW QUESTION # 40
By default, in a Kubeadm cluster, which authentication methods are enabled?
  • A. X509 Client Certs, Webhook Authentication, and Service Account Tokens
  • B. X509 Client Certs, OIDC, and Service Account Tokens
  • C. OIDC, Bootstrap tokens, and Service Account Tokens
  • D. X509 Client Certs, Bootstrap Tokens, and Service Account Tokens
Answer: D
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 # 41
How can a user enforce thePod Security Standardwithout third-party tools?
  • A. Through implementing Kyverno or OPA Policies.
  • B. Use the PodSecurity admission controller.
  • C. It is only possible to enforce the Pod Security Standard with additional tools within the cloud native ecosystem.
  • D. No additional measures have to be taken to enforce the Pod Security Standard.
Answer: B
Explanation:
* ThePodSecurity admission controller(built-in as of Kubernetes v1.23+) enforces the Pod Security Standards (Privileged, Baseline, Restricted).
* Enforcement is namespace-scoped and configured throughnamespace labels.
* Incorrect options:
* (A) Kyverno/OPA are external policy tools (useful but not required).
* (C) Not true, PodSecurity admission provides native enforcement.
* (D) Enforcement requires explicit configuration, not automatic.
References:
Kubernetes Documentation - Pod Security Admission
CNCF Security Whitepaper - Policy enforcement and admission control.

NEW QUESTION # 42
......
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