KCNA Container Orchestration Practice Question
You need to run a batch job that processes a queue of 1000 items. The job should run to completion and then terminate. Which Kubernetes resource is BEST suited for this workload?
⚠ Common exam trap
CNCF often tests the distinction between workloads that run to completion (Jobs) versus those that are expected to run indefinitely (Deployments, DaemonSets), and the trap here is that candidates may choose Deployment because they associate it with 'running a job' in a general sense, without realizing that a Deployment's default behavior is to maintain a desired number of running Pods and restart them if they exit.
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 for batch processing tasks that run to completion and then terminate. It creates one or more Pods and ensures that a specified number of them successfully terminate. For a queue of 1000 items, a Job can be configured with a parallelism value and a completions count to process all items and then exit, making it the ideal resource for this workload.
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
DaemonSets ensure a pod runs on each node, not suitable for a one-time batch job.
- ✓
Job
Why this is correct
A Job creates one or more pods and ensures they successfully terminate; ideal for batch workloads.
- ✗
Deployment
Why it's wrong here
Deployments are for stateless, long-running applications, not for batch jobs that terminate.
- ✗
StatefulSet
Why it's wrong here
StatefulSets are for stateful applications with stable network identities, not batch processing.
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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.