- A
Job
Why wrong: Job runs a task to completion, not a long-running daemon.
- B
Deployment
Why wrong: Deployment does not guarantee one pod per node; it manages replicas across nodes.
- C
StatefulSet
Why wrong: StatefulSet is for stateful applications with stable identities, not per-node scheduling.
- D
DaemonSet
DaemonSet ensures one pod per node.
Question 864 of 997
When to Use DaemonSet for Node-Level Pods
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 Deployment that must run exactly one replica on each node in the cluster for logging purposes. Which Kubernetes resource should you use?
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
✓
DaemonSet
A DaemonSet ensures that exactly one replica of a Pod runs on every node in the cluster, including when nodes are added or removed. This makes it the ideal resource for cluster-wide logging, monitoring, or other node-level agents that must be present on each node.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Job
Why it's wrong here
Job runs a task to completion, not a long-running daemon.
- ✗
Deployment
Why it's wrong here
Deployment does not guarantee one pod per node; it manages replicas across nodes.
- ✗
StatefulSet
Why it's wrong here
StatefulSet is for stateful applications with stable identities, not per-node scheduling.
- ✓
DaemonSet
Why this is correct
DaemonSet ensures one pod per node.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
A common misconception is that a Deployment with a high replica count can achieve per-node coverage, but Deployments do not enforce node-level placement and can leave some nodes empty or run multiple Pods on the same node.
Detailed technical explanation
How to think about this question
DaemonSets use the node's name as a scheduling constraint, bypassing the default scheduler's bin-packing logic. When a new node joins the cluster, the DaemonSet controller automatically creates a Pod on it, and when a node is removed, the corresponding Pod is garbage-collected. This behavior is critical for cluster-wide agents like Fluentd for log collection or kube-proxy for network rules, where missing a node means missing data or broken connectivity.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the KCNA exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Kubernetes Fundamentals — study guide chapter
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FAQ
Questions learners often ask
What does this KCNA question test?
Kubernetes Fundamentals — This question tests Kubernetes Fundamentals — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: DaemonSet — A DaemonSet ensures that exactly one replica of a Pod runs on every node in the cluster, including when nodes are added or removed. This makes it the ideal resource for cluster-wide logging, monitoring, or other node-level agents that must be present on each node.
What should I do if I get this KCNA question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jul 4, 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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