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KCNA · Question #53
KCNA Question #53: Real Exam Question with Answer & Explanation
The correct answer is B: CronJob. For recurring tasks like daily database backups in Kubernetes, a CronJob resource is the appropriate choice as it schedules Jobs to run periodically.
Submitted by mike_84· May 4, 2026Kubernetes Fundamentals
Question
Imagine there is a requirement to run a database backup every day. Which Kubernetes resource could be used to achieve that?
Options
- AKube-scheduler
- BCronJob
- CTask
- DJob
Explanation
For recurring tasks like daily database backups in Kubernetes, a CronJob resource is the appropriate choice as it schedules Jobs to run periodically.
Common mistakes.
- A. The Kube-scheduler is a control plane component responsible for assigning newly created Pods to available nodes, not for scheduling recurring tasks.
- C. While jobs perform tasks, 'Task' is not a standard, top-level Kubernetes resource type for scheduling recurring operations.
- D. A Kubernetes Job creates one or more Pods and ensures that a specified number of them successfully terminate; it doesn't handle recurring scheduling, which is the role of a CronJob.
Concept tested. Kubernetes CronJob for scheduled tasks
Reference. https://kubernetes.io/docs/concepts/workloads/controllers/cron-jobs/
Topics
#Kubernetes Resources#CronJob#Scheduled Tasks#Kubernetes Job
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