KCNA Kubernetes Fundamentals Practice Question
You need to run a batch job that processes a queue and then terminates. Which Kubernetes resource is most appropriate?
⚠ Common exam trap
CNCF often tests the distinction between controllers that maintain a desired state (Deployment, StatefulSet, DaemonSet) versus controllers that run to completion (Job), and the trap here is assuming that any workload that processes data must use a Deployment because it's the most common controller.
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 Job is the correct resource because it is designed to run a specified number of pods to completion and then terminate, making it ideal for batch processing tasks like processing a queue. Unlike controllers that maintain a desired state indefinitely, a Job ensures the pod runs successfully to completion, even if the pod fails and needs to be restarted, and then stops.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
StatefulSet
Why it's wrong here
StatefulSets are for stateful applications with stable identities.
- ✓
Job
Why this is correct
Jobs run Pods that perform a task and then terminate.
- ✗
Deployment
Why it's wrong here
Deployments are for long-running, stateless applications that should never terminate.
- ✗
DaemonSet
Why it's wrong here
DaemonSets run a Pod on each Node, not for batch jobs.
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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.