KCNA practice questions 251–260

1. Question 251 · 282 in bank

   Which Kubernetes resource provides standardized load balancing, TLS termination, and multi-context traffic routing across different implementations?

   • AGateway API
   • BCoreDNS
   • CIngress
   • Dkube-proxy

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   Answer: A

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2. Question 252 · 282 in bank

   Which statement describes the purpose of Labels in Kubernetes?

   • ALabels must be defined on objects before they can be created in Kubernetes.
   • BLabels assign objects to specific namespaces to support resource isolation.
   • CLabels provide globally unique identifiers for all objects across the cluster.
   • DLabels are used to attach identifying metadata to objects so they can be selected and grouped.

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   Answer: D

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3. Question 253 · 282 in bank

   In a Kubernetes cluster, the component called etcd plays an essential role. What is the primary function of etcd?

   • ATo replicate cluster state data across control plane nodes for high availability.
   • BTo provide a distributed key-value store for all cluster state and data.
   • CTo persist API object definitions such as Pods, ConfigMaps, and Secrets.
   • DTo maintain the desired state of workloads by reconciling changes through controllers.

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   Answer: B

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4. Question 254 · 282 in bank

   What is the correct command to scale multiple Pods for a deployment?

   • Akubectl scale --clones=3 deployment/my-app
   • Bkubectl scale --pods=3 deployment/my-app
   • Ckubectl scale --replicas=3 deployment/my-app
   • Dkubectl scale --copy=3 deployment/my-app

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   Answer: C

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5. Question 255 · 282 in bank

   Which Pod Security Standard balances ease of adoption while still preventing known privilege escalations?

   • APrivileged
   • BPermissive
   • CRestricted
   • DBaseline

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   Answer: D

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6. Question 256 · 282 in bank

   A logging agent must be deployed to run on every node in a Kubernetes cluster. Which resource should be used to achieve this requirement?

   • ADeployment
   • BDaemonSet
   • CReplicaSet
   • DStatefulSet

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   Answer: B

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7. Question 257 · 282 in bank

   How can a tls-type secret be created that holds the TLS certificate and its associated key using the kubectl command?

   • Akubectl create secret generic tls-secret --cert=path/to/tls.crt --key=path/to/tls.key
   • Bkubectl create secret tls tls-secret --cert=path/to/tls.crt --key=path/to/tls.key
   • Ckubectl create secret tls tls-secret --from-file=cert=path/to/tls.crt --from-file=key=path/to/tls.key
   • Dkubectl create secret generic tls-secret --from-file=cert=path/to/tls.crt --from-file=key=path/to/tls.key

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   Answer: B

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8. Question 258 · 282 in bank

   In a Kubernetes cluster, how does DNS resolution work for services?

   • ADNS resolution for services uses the IP addresses of the Pods directly.
   • BDNS resolution for services is handled by an external DNS provider that manages all service names.
   • CKubernetes creates service names that resolve to stable cluster IPs.
   • DService names in Kubernetes are resolved using environment variables set in each Pod.

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   Answer: C

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9. Question 259 · 282 in bank

   A developer is trying to understand the concept of containerization for their Kubernetes deployment. What best describes containerization?

   • AA technique that allows applications to run only on bare metal servers without any abstraction.
   • BA lightweight approach to running applications in isolated environments using shared OS resources.
   • CA way to create and manage virtual machines for running various applications.
   • DA method of virtualizing physical hardware to run multiple operating systems.

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   Answer: B

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10. Question 260 · 282 in bank

    In a Kubernetes cluster, how are Labels and Selectors utilized to manage and organize resources?

    • ALabels are used only for service discovery and do not affect resource management.
    • BLabels are used for categorizing resources, while Selectors are used to filter and retrieve resources based on those labels.
    • CSelectors can only be applied to Pods and not to other resource types in Kubernetes.
    • DLabels are automatically generated by Kubernetes, and Selectors are manually defined by users.

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    Answer: B

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KCNA practice, question 251. 282 questions available.