This KCNA practice question tests your understanding of kubernetes fundamentals. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
Which TWO components are part of the Kubernetes control plane? (Select exactly two.)
kube-proxy
Why wrong: kube-proxy runs on worker nodes.
kubelet
Why wrong: kubelet runs on worker nodes.
container runtime
Why wrong: Container runtime runs on worker nodes.
kube-apiserver
API server is a control plane component.
kube-scheduler
Scheduler is a control plane component.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
kube-apiserver
The kube-apiserver is the front-end of the Kubernetes control plane, exposing the Kubernetes API for all cluster operations. The kube-scheduler is responsible for assigning newly created pods to nodes based on resource availability and policy constraints. Both are essential control plane components that manage cluster state and scheduling decisions.
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.
kube-proxy
Why it's wrong here
kube-proxy runs on worker nodes.
kubelet
Why it's wrong here
kubelet runs on worker nodes.
container runtime
Why it's wrong here
Container runtime runs on worker nodes.
kube-apiserver
Why this is correct
API server is a control plane component.
Related concept
Read the scenario before looking for a memorised answer.
kube-scheduler
Why this is correct
Scheduler is a control plane component.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
CNCF often tests the distinction between control plane and worker node components, and the trap here is that candidates confuse kube-proxy or kubelet (which run on every node) with control plane components because they are essential for cluster operation, but they are not part of the control plane itself.
Detailed technical explanation
The kube-apiserver validates and processes all RESTful API requests, persisting cluster state to etcd, and is the only component that communicates directly with etcd. The kube-scheduler uses a two-phase scheduling algorithm: filtering (predicates) to find feasible nodes, then scoring (priorities) to select the best node, considering factors like resource requests, node affinity, and taints/tolerations. In a real-world scenario, if the kube-scheduler fails, new pods remain in Pending state indefinitely, while kube-apiserver failure makes the entire cluster unmanageable.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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
Learn the concepts, then practise the questions
Kubernetes Fundamentals practice questions
Targeted practice on this topic area only
All KCNA questions
997 questions across all exam domains
Kubernetes and Cloud Native Associate KCNA study guide
Full concept coverage aligned to exam objectives
KCNA practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise KCNA questions linked to Kubernetes Fundamentals.
Practise KCNA questions linked to Container Orchestration.
Practise KCNA questions linked to Cloud Native Architecture.
Practise KCNA questions linked to Cloud Native Observability.
Practise KCNA questions linked to Cloud Native Application Delivery.
Practise KCNA questions linked to KCNA fundamentals.
Practise KCNA questions linked to KCNA scenario.
Practise KCNA questions linked to KCNA troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Kubernetes Fundamentals — This question tests Kubernetes Fundamentals — Read the scenario before looking for a memorised answer..
The correct answer is: kube-apiserver — The kube-apiserver is the front-end of the Kubernetes control plane, exposing the Kubernetes API for all cluster operations. The kube-scheduler is responsible for assigning newly created pods to nodes based on resource availability and policy constraints. Both are essential control plane components that manage cluster state and scheduling decisions.
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.
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 →
Last reviewed: Jun 30, 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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.