- A
Kubernetes is only used in production environments
Why wrong: Kubernetes can be used in development, testing, and production.
- B
Docker Compose and Kubernetes use the same YAML manifest format
Why wrong: They use different YAML structures; Docker Compose uses docker-compose.yml, Kubernetes uses resource manifests.
- C
Kubernetes provides built-in auto-scaling and self-healing capabilities
Kubernetes includes features like Horizontal Pod Autoscaler and automatic restart of failed containers.
- D
Docker Compose is designed for single-host container orchestration
Docker Compose orchestrates containers on a single Docker host, suitable for development and testing.
- E
Docker Compose supports multi-node clustering out-of-the-box
Why wrong: Docker Compose does not support multi-node clustering natively; Docker Swarm does.
Docker Compose vs Kubernetes
This KCNA practice question tests your understanding of container orchestration. 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.
Which TWO statements about Docker Compose and Kubernetes are correct?
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
Kubernetes provides built-in auto-scaling and self-healing capabilities
Option C is correct because Kubernetes includes built-in controllers, such as the Horizontal Pod Autoscaler (HPA) and the ReplicaSet, which automatically adjust the number of running pods based on CPU/memory metrics or custom metrics, and restart failed containers to maintain the desired state. This self-healing and auto-scaling capability is a core feature of Kubernetes, not available in Docker Compose.
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.
- ✗
Kubernetes is only used in production environments
Why it's wrong here
Kubernetes can be used in development, testing, and production.
- ✗
Docker Compose and Kubernetes use the same YAML manifest format
Why it's wrong here
They use different YAML structures; Docker Compose uses docker-compose.yml, Kubernetes uses resource manifests.
- ✓
Kubernetes provides built-in auto-scaling and self-healing capabilities
Why this is correct
Kubernetes includes features like Horizontal Pod Autoscaler and automatic restart of failed containers.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Docker Compose is designed for single-host container orchestration
Why this is correct
Docker Compose orchestrates containers on a single Docker host, suitable for development and testing.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Docker Compose supports multi-node clustering out-of-the-box
Why it's wrong here
Docker Compose does not support multi-node clustering natively; Docker Swarm does.
Common exam traps
Common exam trap: answer the scenario, not the keyword
A common misconception is that Docker Compose and Kubernetes use the same YAML format, but they are distinct schemas with different top-level keys and resource definitions. Candidates may confuse 'docker-compose.yml' with Kubernetes manifests.
Detailed technical explanation
How to think about this question
Under the hood, Kubernetes auto-scaling works via the Horizontal Pod Autoscaler, which queries the metrics-server or custom metrics API at a default interval of 15 seconds, then adjusts the replicas field in the ReplicaSet or Deployment. Self-healing is achieved through the kubelet, which monitors container health via liveness probes (e.g., HTTP GET, TCP socket, or command execution) and restarts containers if they fail. In contrast, Docker Compose uses a single Docker daemon and lacks these distributed control loop mechanisms, making it unsuitable for production-grade resilience without additional tooling.
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.
- →
Container Orchestration — study guide chapter
Learn the concepts, then practise the questions
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FAQ
Questions learners often ask
What does this KCNA question test?
Container Orchestration — This question tests Container Orchestration — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Kubernetes provides built-in auto-scaling and self-healing capabilities — Option C is correct because Kubernetes includes built-in controllers, such as the Horizontal Pod Autoscaler (HPA) and the ReplicaSet, which automatically adjust the number of running pods based on CPU/memory metrics or custom metrics, and restart failed containers to maintain the desired state. This self-healing and auto-scaling capability is a core feature of Kubernetes, not available in Docker Compose.
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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