KCNA practice questions 21–30

1. Question 21 · 282 in bank

   Which of the following sentences is true about namespaces in Kubernetes?

   • AYou can create a namespace within another namespace in Kubernetes.
   • BYou can create two resources of the same kind and name in a namespace.
   • CThe default namespace exists when a new cluster is created.
   • DAll the objects in the cluster are namespaced by default.

   Show answer

   Answer: C

   Next question

2. Question 22 · 282 in bank

   How does Horizontal Pod autoscaling work in Kubernetes?

   • AThe Horizontal Pod Autoscaler controller adds more CPU or memory to the pods when the load is above the configured threshold, and reduces CPU or memory when the load is below.
   • BThe Horizontal Pod Autoscaler controller adds more pods when the load is above the configured threshold, but does not reduce the number of pods when the load is below.
   • CThe Horizontal Pod Autoscaler controller adds more pods to the specified DaemonSet when the load is above the configured threshold, and reduces the number of pods when the load is below.
   • DThe Horizontal Pod Autoscaler controller adds more pods when the load is above the configured threshold, and reduces the number of pods when the load is below.

   Show answer

   Answer: D

   Next question

3. Question 23 · 282 in bank

   What is the name of the lightweight Kubernetes distribution built for IoT and edge computing?

   • AOpenShift
   • Bk3s
   • CRKE
   • Dk1s

   Show answer

   Answer: B

   Next question

4. Question 24 · 282 in bank

   What is a Pod?

   • AA networked application within Kubernetes.
   • BA storage volume within Kubernetes.
   • CA single container within Kubernetes.
   • DA group of one or more containers within Kubernetes.

   Show answer

   Answer: D

   Next question

5. Question 25 · 282 in bank

   What element allows Kubernetes to run Pods across the fleet of nodes?

   • AThe node server.
   • BThe etcd static pods.
   • CThe API server.
   • DThe kubelet.

   Show answer

   Answer: D

   Next question

6. Question 26 · 282 in bank

   What is the Kubernetes object used for running a recurring workload?

   • AJob
   • BBatch
   • CDaemonSet
   • DCronJob

   Show answer

   Answer: D

   Next question

7. Question 27 · 282 in bank

   In the DevOps framework and culture, who builds, automates, and offers continuous delivery tools for developer teams?

   • AApplication Users
   • BApplication Developers
   • CPlatform Engineers
   • DCluster Operators

   Show answer

   Answer: C

   Next question

8. Question 28 · 282 in bank

   Which kubectl command is useful for collecting information about any type of resource that is active in a Kubernetes cluster?

   • Adescribe
   • Blist
   • Cexpose
   • Dexplain

   Show answer

   Answer: A

   Next question

9. Question 29 · 282 in bank

   The cloud native architecture centered around microservices provides a strong system that ensures ______________.

   • Afallback
   • Bresiliency
   • Cfailover
   • Dhigh reachability

   Show answer

   Answer: B

   Next question

10. Question 30 · 282 in bank

    Which of the following is the correct command to run a nginx deployment with 2 replicas?

    • Akubectl run deploy nginx --image=nginx --replicas=2
    • Bkubectl create deploy nginx --image=nginx --replicas=2
    • Ckubectl create nginx deployment --image=nginx –replicas=2
    • Dkubectl create deploy nginx --image=nginx --count=2

    Show answer

    Answer: B

    Next question

Keyboard:J Kmove between questionsA–Dselect an answerRshow or hide the answer← →change page

KCNA practice, question 21. 282 questions available.