LINUX FOUNDATION KCNA VALID EXAM TIPS & KCNA UPDATED TESTKINGS

Linux Foundation KCNA Valid Exam Tips & KCNA Updated Testkings

Linux Foundation KCNA Valid Exam Tips & KCNA Updated Testkings

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Linux Foundation Kubernetes and Cloud Native Associate Sample Questions (Q149-Q154):

NEW QUESTION # 149
You are using Prometheus to monitor your Kubernetes cluster. You notice that several pods are
experiencing high memory usage. You want to investigate further to determine which containers within these pods are consuming the most memory. How can you effectively use Prometheus to identify these memory-intensive containers?

  • A. Utilize the • metric to identify containers that are frequently restarting due to memory pressure.
  • B. Use the 'kube_pod_container_status_memory_usage_bytes' metric to analyze the actual memory usage of each container.
  • C. Use the metric to identify the requested memory limits for each containa
  • D. Utilize the metric to identify pods that are not ready due to memory constraints.
  • E. Filter Prometheus queries by container name and sort by memory usage to pinpoint the memory-intensive containers.

Answer: B,E

Explanation:
Both options B and D provide effective solutions for identifying memory-intensive containers. Option B allows you to directly analyze the 'kube_pod_container_status_memory_usage_bytes• metric, which provides the actual memory usage of each container within the pod. Option D suggests filtering Prometheus queries by container name and sorting by memory usage, enabling you to easily pinpoint containers with the highest memory consumption. While option A provides information about requested memory limits, it doesn't directly reflect the actual memory usage. Options C and E are not directly relevant to identifying memory-intensive containers.


NEW QUESTION # 150
You are building a serverless application on Google Cloud Functions that needs to interact with a Google Cloud SQL database. How can you securely connect your Cloud Functions to the Cloud SQL instance?

  • A. Use Google Cloud Functions' built-in database connector to access Cloud SQL.
  • B. Use a dedicated virtual machine (VM) to host a database connector that communicates with both Cloud Functions and Cloud SQL.
  • C. Utilize Google Cloud IAM to grant Cloud Functions access to the Cloud SQL instance.
  • D. Configure a Cloud SQL proxy service to forward connections to the Cloud SQL instance.
  • E. Use a service account with appropriate permissions to connect to Cloud SQL from Cloud Functions.

Answer: E

Explanation:
The most secure and recommended approach is to use a service account with appropriate permissions to connect to Cloud SQL from Cloud Functions. This method provides granular control over access and ensures that Cloud Functions only have the necessary permissions to interact with the database. Option A is not a standard feature. Option B is an alternative but adds complexity. Option C introduces extra infrastructure and potential security risks. Option D, while important for overall security, doesnt specifically address database connections.


NEW QUESTION # 151
What command can you use to get documentation about a resource type from the command line?

  • A. kubectl get
  • B. kubeadm get-resource
  • C. kubectl api-resources
  • D. kubectl explain

Answer: D

Explanation:
https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands#explain


NEW QUESTION # 152
A ________ is a ready-to-run software package, containing everything needed to run an application.

  • A. Container Repository
  • B. Container Runtime
  • C. Container Image
  • D. Docker

Answer: C

Explanation:
https://kubernetes.io/docs/concepts/containers/#container-images


NEW QUESTION # 153
You have a Kubernetes cluster with multiple worker nodes. Nodel has a label •role: web', Node2 has a label *role: database* , and Node3 has no labels. You deploy a pod with a 'nodeSelectoN set to 'role: web'. Which node(s) is/are eligible for the pod to be scheduled on?

  • A. Any of the nodes.
  • B. Only Nodel.
  • C. only Node2.
  • D. Only Node3.
  • E. Nodel and Node2.

Answer: B

Explanation:
The •nodeSelector• field explicitly specifies that the pod must be scheduled on a node with the label •role: web'. Only Nodel has this label, so it is the only eligible node. The absence of labels or the presence of different labels on other nodes does not satisfy the pod's scheduling requirements.


NEW QUESTION # 154
......

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