This CKA practice question tests your understanding of cluster architecture, installation and configuration. 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.
What is the purpose of the kube-proxy component?
It proxies API requests to the kube-apiserver
Why wrong: That is not its role.
It manages network rules for Services and endpoints
Correct.
It stores cluster state
Why wrong: That's etcd.
It schedules pods to nodes
Why wrong: That's the scheduler.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
It manages network rules for Services and endpoints
B is correct because kube-proxy is the component responsible for implementing the network rules that enable Kubernetes Services to function. It runs on each node and maintains iptables or IPVS rules to route traffic to the correct backend Pods based on the Service's endpoints, handling load balancing and service discovery at the network layer.
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.
It proxies API requests to the kube-apiserver
Why it's wrong here
That is not its role.
It manages network rules for Services and endpoints
Why this is correct
Correct.
Related concept
Read the scenario before looking for a memorised answer.
It stores cluster state
Why it's wrong here
That's etcd.
It schedules pods to nodes
Why it's wrong here
That's the scheduler.
Common exam traps
The trap here is that candidates confuse kube-proxy with an API proxy or ingress controller, but kube-proxy specifically handles Service-level network rules at the node level, not application-layer routing or API request proxying.
Detailed technical explanation
Under the hood, kube-proxy watches the Kubernetes API server for changes to Services and EndpointSlices, then updates iptables rules (or IPVS rules) on the node to redirect traffic from the Service's ClusterIP to the actual Pod IPs. In iptables mode, it uses random selection for load balancing, while IPVS mode supports more sophisticated algorithms like round-robin or least connections. A subtle behavior is that kube-proxy does not handle DNS resolution; that is done by CoreDNS, and kube-proxy only deals with Layer 4 (TCP/UDP) traffic, not Layer 7 routing.
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 CKA 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
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FAQ
Cluster Architecture, Installation and Configuration — This question tests Cluster Architecture, Installation and Configuration — Read the scenario before looking for a memorised answer..
The correct answer is: It manages network rules for Services and endpoints — B is correct because kube-proxy is the component responsible for implementing the network rules that enable Kubernetes Services to function. It runs on each node and maintains iptables or IPVS rules to route traffic to the correct backend Pods based on the Service's endpoints, handling load balancing and service discovery at the network layer.
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 CKA 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 CKA exam.
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