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KCNA Container Orchestration Practice Question

Which Kubernetes resource is best suited for running a batch processing job that must complete successfully exactly once?

⚠ Common exam trap

CNCF often tests the distinction between one-time batch processing (Job) and recurring scheduled tasks (CronJob), so candidates mistakenly choose CronJob when the question specifies 'exactly once' rather than 'on a schedule'.

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

Job

A Kubernetes Job is designed specifically for batch processing tasks that need to run to completion exactly once. It creates one or more Pods and ensures that a specified number of them successfully terminate, making it ideal for workloads like data processing or backups that must finish without retries or restarts.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✗

    DaemonSet

    Why it's wrong here

    DaemonSet runs a pod on each node.

  • ✗

    Deployment

    Why it's wrong here

    Deployment is for long-running stateless applications.

  • ✗

    CronJob

    Why it's wrong here

    CronJob is for scheduled jobs, not for one-time execution.

  • ✓

    Job

    Why this is correct

    Job is designed for batch processing that runs to completion.

About these practice questions

One of 833 original KCNA practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This KCNA practice question is part of Courseiva's free CNCF certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the KCNA exam.