This KCNA practice question tests your understanding of kubernetes fundamentals. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
You have a Pod that needs to run a one-time batch job to completion. Which resource type should you use?
Job
Jobs run Pods to completion.
StatefulSet
Why wrong: StatefulSet is for stateful applications with stable identities.
DaemonSet
Why wrong: DaemonSet runs Pods on all or selected nodes.
Deployment
Why wrong: Deployments expect Pods to run continuously.
Answer choices
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 resource is designed for running a finite task to completion, such as a batch job or a one-time computation. Unlike controllers that maintain a desired number of replicas indefinitely, a Job creates one or more Pods and tracks their successful termination. Once the specified number of completions is reached, the Job is considered finished and no further Pods are created.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Job
Why this is correct
Jobs run Pods to completion.
Related concept
Read the scenario before looking for a memorised answer.
StatefulSet
Why it's wrong here
StatefulSet is for stateful applications with stable identities.
DaemonSet
Why it's wrong here
DaemonSet runs Pods on all or selected nodes.
Deployment
Why it's wrong here
Deployments expect Pods to run continuously.
Common exam traps
The trap here is that candidates often confuse a Job with a Deployment, thinking that any workload that runs a container should use a Deployment, but Deployments are designed for long-running services, not ephemeral batch tasks.
Detailed technical explanation
Under the hood, a Job controller uses a backoff limit (default 6) to handle Pod failures and can be configured with a parallelism value to run multiple Pods concurrently. A real-world scenario is a data migration script that must run exactly once; using a Job ensures that if the Pod crashes, it is restarted until the script completes, and the Job's status can be checked via `kubectl get jobs` to confirm completion.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
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FAQ
Kubernetes Fundamentals — This question tests Kubernetes Fundamentals — Read the scenario before looking for a memorised answer..
The correct answer is: Job — A Job resource is designed for running a finite task to completion, such as a batch job or a one-time computation. Unlike controllers that maintain a desired number of replicas indefinitely, a Job creates one or more Pods and tracks their successful termination. Once the specified number of completions is reached, the Job is considered finished and no further Pods are created.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
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.
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