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Linux Foundation Kubernetes and Cloud Native Associate Sample Questions (Q85-Q90):

NEW QUESTION # 85
Various Container Orchestrator Systems (COS)?

A. Kubernetes
B. Docker Swarm
C. Apache Mesos
D. None of the options

Answer: A,B,C

NEW QUESTION # 86
What standard does kubelet use to communicate with the container runtime?

A. Container Runtime Interface (CRI)
B. ContainerD
C. CRI-O
D. Service Mesh Interface (SMI)

Answer: A

Explanation:
kubelet can communicate with any runtime that supports the CRI standard.

NEW QUESTION # 87
You are managing a Kubernetes cluster using GitOps principles. Which of the following tools would you use to monitor the state of your cluster and trigger actions based on changes in your Git repository?

A. Flux
B. kubectl
C. Helm
D. Prometheus

Answer: A

Explanation:
Flux is a GitOps operator that continuously monitors your Git repository for changes and applies those changes to your Kubernetes cluster. It is specifically designed for GitOps workflows, ensuring your cluster's state reflects the desired configuration in your Git repository.

NEW QUESTION # 88
What is the purpose of the 'kubelet* component in Kubernetes?

A. It manages the communication between the Kubernetes master and the nodes.
B. It runs and manages containers on each node, ensuring their health and resource usage.
C. It schedules Pods onto nodes based on resource availability and constraints.
D. It is responsible for storing and managing Kubernetes configurations and state.
E. It manages the API server and provides access to Kubernetes resources.

Answer: B

Explanation:
The "kubelet• component in Kubernetes is responsible for running and managing containers on each node. It is the agent that communicates with the master and ensures that Pods are running as intended. Option 'A' is incorrect because that is the role of the kube-proxy and the API server. Option 'B' is incorrect because scheduling is handled by the scheduler. Option 'D' is incorrect because that is the role of the API server. Option 'E' is incorrect because configuration and state are managed by the etcd.

NEW QUESTION # 89
You have a Kubernetes cluster with a HorizontalPodAutoscaler (HPA) configured for your application. The HPA is set to scale the application based on CPU utilization. The application suddenly experiences a surge in traffic, causing high CPU usage. How does the HPA respond to this scenario?

A. The HPA scales up the application only if CPU utilization exceeds a predefined threshold.
B. The HPA only scales down the application when CPU utilization drops below a certain threshold.
C. The HPA scales up the application by increasing the resource requests for existing Pods.
D. The HPA scales up the application after a configurable delay to avoid over-provisioning.
E. The HPA immediately scales up the application by creating new Pods.

Answer: A

Explanation:
The HPA typically has a defined threshold (e.g., 80% CPU utilization) and a scaling policy (e.g., add one Pod if CPU exceeds the threshold). The HPA won't immediately scale up upon a traffic surge; it will wait for the CPU utilization to surpass the specified threshold before triggering the scaling action.

NEW QUESTION # 90
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