- A
Infrastructure is version-controlled using Git
Why wrong: Version control is a practice, not a defining characteristic of immutability.
- B
Infrastructure components are never changed after deployment; they are replaced
Immutable infrastructure replaces components rather than modifying them.
- C
Servers are updated in-place with configuration management tools
Why wrong: That is mutable infrastructure.
- D
Containers are used to ensure portability
Why wrong: Portability is a benefit of containers, but not specific to immutability.
Question 531 of 997
Immutable Infrastructure
This KCNA practice question tests your understanding of container orchestration. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 of the following is a characteristic of immutable infrastructure?
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
✓
Infrastructure components are never changed after deployment; they are replaced
Immutable infrastructure means that once a component (e.g., a server, container, or VM) is deployed, it is never modified. If an update is needed, the entire component is replaced with a new version. This eliminates configuration drift and ensures consistency across environments, which is a core principle in container orchestration with Kubernetes.
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.
- ✗
Infrastructure is version-controlled using Git
Why it's wrong here
Version control is a practice, not a defining characteristic of immutability.
- ✓
Infrastructure components are never changed after deployment; they are replaced
Why this is correct
Immutable infrastructure replaces components rather than modifying them.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Servers are updated in-place with configuration management tools
Why it's wrong here
That is mutable infrastructure.
- ✗
Containers are used to ensure portability
Why it's wrong here
Portability is a benefit of containers, but not specific to immutability.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The KCNA exam often tests the misconception that version-controlling infrastructure (Option A) or using containers (Option D) automatically makes infrastructure immutable, but immutability specifically requires that deployed components are never modified—only replaced.
Detailed technical explanation
How to think about this question
Under the hood, immutable infrastructure relies on golden images or container images built once and deployed identically across environments. In Kubernetes, this is enforced by using Deployments with a rolling update strategy that replaces Pods with new ones rather than patching existing containers. A real-world scenario: if a security patch is needed, you rebuild the image, push it to a registry, and update the Deployment—no SSH or in-place changes occur, preventing configuration drift.
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: Infrastructure components are never changed after deployment; they are replaced — Immutable infrastructure means that once a component (e.g., a server, container, or VM) is deployed, it is never modified. If an update is needed, the entire component is replaced with a new version. This eliminates configuration drift and ensures consistency across environments, which is a core principle in container orchestration with Kubernetes.
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 →
Same concept, more angles
2 more ways this is tested on KCNA
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which TWO of the following are characteristics of immutable infrastructure? (Select two.)
medium- ✓ A.Servers are never modified after they are deployed
- B.Containers are used exclusively
- C.Infrastructure is version-controlled and tested
- ✓ D.New versions are deployed by replacing the entire server with a new image
- E.Configuration updates are applied directly to running servers
Why A: Immutable infrastructure means that once a server or container is deployed, it is never modified in place. If a change is needed, a new image is built and deployed, and the old instance is destroyed. This ensures consistency and eliminates configuration drift, which is a core principle of immutable deployments in Kubernetes and cloud-native environments.
Variation 2. Which THREE of the following are core principles of immutable infrastructure? (Choose 3)
medium- ✓ A.Rollbacks are performed by redeploying a previous image
- B.Infrastructure is patched by applying updates to running servers
- ✓ C.Infrastructure components are never modified after deployment
- ✓ D.Deployments are reproducible and consistent
- E.All changes are made by updating configuration files on running instances
Why A: Immutable infrastructure means that components are replaced, not modified. This ensures consistency, reliability, and easy rollbacks. Patching running instances is mutable.
Keep practising
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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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