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Linux Foundation Kubernetes and Cloud Native Associate Sample Questions (Q33-Q38):

NEW QUESTION # 33
What is a benefits of Kubernetes federation?

A. Low latency
B. Avoids scalability limits on pods and nodes
C. Creates highly available clusters in different regions

Answer: A,B,C

NEW QUESTION # 34
You have a Kubernetes cluster with a deployment named 'my-app' that has a replica count of 3. You need to temporarily scale it down to 1 replica. Which command would you use?

A. kubectl set scale deployments my-app -replicas=1
B. kubectl apply -f my-app-deployment.yaml --replicas=1
C. kubectl scale deployments my-app -replicas=1
D. kubectl patch deployments my-app -type=json-patch='{"spec":{"replicas":1}}'
E. kubectl edit deployment my-app -replicas=1

Answer: A,C

Explanation:
Both 'kubectl scale deployments my-app -replicas=l' and 'kubectl set scale deployments my- app --replicas=1' are valid commands to scale down the deployment. Option 'C' also works but it is more verbose. Option 'B' would edit the deployment configuration, which is not the desired outcome in this case. Option 'E' would apply a new configuration, which is also not ideal.

NEW QUESTION # 35
In Kubernetes, what is considered the primary cluster data source?

A. scheduler
B. api server
C. etcd (pronounce: esty-d)
D. kubelet

Answer: C

Explanation:
https://kubernetes.io/docs/concepts/overview/components/#etcd

NEW QUESTION # 36
The Kubernetes API provides an interface for storing objects. Which of the following describes the type of objects stored by the Kubernetes API?

A. YAML
B. Containers
C. ETCD
D. REST

Answer: D

Explanation:
Kubernetes objects are RESTful objects.

NEW QUESTION # 37
You are using a Kubernetes deployment to run a web application. You want to roll out a new version of the application with minimal downtime. Which strategy can be used to achieve this?

A. BlueGreen
B. Immutable
C. Recreate
D. RollingUpdate
E. Canary

Answer: A,D,E

Explanation:
RollingUpdate, BlueGreen, and Canary are all strategies that can be used to roll out new application versions with minimal downtime. RollingUpdate updates Pods one by one, ensuring that there are always healthy Pods running. BlueGreen creates two separate environments, one for the old version and one for the new version, and then switches traffic over to the new environment. Canary gradually rolls out the new version to a small subset of users before making it available to everyone. Option 'A' (Recreate) would completely stop the old Pods before creating new ones, which could lead to downtime. Option 'E' (Immutable) is not a deployment strategy for rolling out updates.

NEW QUESTION # 38
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Amelia Robinson Amelia Robinson

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