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  2. Linux Foundation Certification
  3. KCNA Exam
  4. LinuxFoundation.KCNA.v2025-07-29.q103 Dumps
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Question 61

You are using Istio to manage traffic flow in a microservices architecture. Your application consists of three services: 'service-A', 'service-B', and 'service-C', where 'service-A' depends on 'service-B' and 'service-B' depends on 'service-C'. You want to implement a canary rollout for 'service-B' to test a new version before rolling it out to all users. How would you configure Istio to achieve this?

Correct Answer: B
Istio's VirtualService allows you to define routing rules that can direct a percentage of traffic to a specific version of a service- This enables you to perform canary rollouts by gradually introducing the new version of 'service-B' to a subset of users- Option A is not a valid Istio configuration option- Option C creates unnecessary complexity Option D is related to retries, not canary rollouts. Option E is closer but doesn't specify the percentage split.
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Question 62

You are deploying a pod that requires access to a specific storage volume attached to a particular node. Which Kubernetes feature can you utilize to guarantee the pod is scheduled only on that specific node?

Correct Answer: A,E
You can achieve this by using either •nodeAffinity• or •taints and tolerationS: 'nodeAffinity•• Similar to the previous question, define 'requiredDuringSchedulinglgnoredDuringExecution• to enforce scheduling on the specific node. 'Taints and TolerationS: Apply a taint on the specific node that reflects the volume availability. Then, configure the pod to tolerate that specific taint, ensuring it can only be scheduled on the node with the matching taint. While •podAffinity• and •podAntiAffinity' are useful for grouping or distributing pods, they do not directly guarantee scheduling on a specific node based on volume availability.
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Question 63

Which role is responsible of creating service level indicator 'SLI', service level objective 'SLO', & Service Level Agreements 'SLA'

Correct Answer: A
https://www.atlassian.com/incident-management/kpis/sla-vs-slo-vs-sli
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Question 64

You are implementing a GitOps workflow for your Kubernetes cluster. Which of the following best practices should you consider?

Correct Answer: C,D,E
Option C promotes organization and maintainability by structuring your repository, while option D enables tracking specific releases through Git tags. Option E emphasizes the importance of code reviews and approvals to ensure the integrity of your deployments. These practices collectively contribute to a robust and well-managed GitOps workflow.
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Question 65

Which control plane component is responsible for scheduling pods?

Correct Answer: B
https://kubernetes.io/docs/concepts/overview/components/
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