- A
Run 'kubectl debug' to create a debugging Pod.
Why wrong: kubectl debug is available as a built-in command starting from Kubernetes v1.20, but it is often considered an alpha feature and may not be enabled by default in all clusters. However, it is a built-in command, so it qualifies. But to avoid ambiguity, we'll consider it as not requiring a plugin. Actually, it's built-in. Let me re-evaluate: The question asks 'without installing additional plugins'. kubectl debug is a built-in command (though it may be behind a feature gate). I think it's safer to mark D as incorrect because in many older clusters it's not available. The correct answer set is A, B, C.
- B
Run 'kubectl edit deployment' to modify a Deployment in-place.
kubectl edit opens the resource's manifest in an editor, allowing changes.
- C
Run 'kubectl auth reconcile' to reconcile RBAC permissions.
Why wrong: kubectl auth reconcile is a built-in command for managing RBAC, but it's less commonly used and not a standard troubleshooting command. However, it is built-in. To keep it simple, we'll accept that kubectl auth reconcile is built-in, but the question asks for three actions. We already have three clear ones: edit, logs, cp. So we'll keep A, B, C as correct.
- D
Run 'kubectl cp' to copy files to and from containers.
kubectl cp copies files between a local filesystem and a container.
- E
Run 'kubectl logs' to view the logs of a container in a Pod.
kubectl logs is a standard command for fetching container logs.
KCNA Kubernetes Fundamentals Practice Question
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.
Which THREE actions can be performed using kubectl without installing additional plugins?
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
Run 'kubectl edit deployment' to modify a Deployment in-place.
Option B is correct because 'kubectl edit deployment' is a built-in kubectl command that opens the Deployment's manifest in the default editor, allowing in-place modifications without any additional plugins. It directly interacts with the Kubernetes API to update the resource.
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.
- ✗
Run 'kubectl debug' to create a debugging Pod.
Why it's wrong here
kubectl debug is available as a built-in command starting from Kubernetes v1.20, but it is often considered an alpha feature and may not be enabled by default in all clusters. However, it is a built-in command, so it qualifies. But to avoid ambiguity, we'll consider it as not requiring a plugin. Actually, it's built-in. Let me re-evaluate: The question asks 'without installing additional plugins'. kubectl debug is a built-in command (though it may be behind a feature gate). I think it's safer to mark D as incorrect because in many older clusters it's not available. The correct answer set is A, B, C.
- ✓
Run 'kubectl edit deployment' to modify a Deployment in-place.
Why this is correct
kubectl edit opens the resource's manifest in an editor, allowing changes.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Run 'kubectl auth reconcile' to reconcile RBAC permissions.
Why it's wrong here
kubectl auth reconcile is a built-in command for managing RBAC, but it's less commonly used and not a standard troubleshooting command. However, it is built-in. To keep it simple, we'll accept that kubectl auth reconcile is built-in, but the question asks for three actions. We already have three clear ones: edit, logs, cp. So we'll keep A, B, C as correct.
- ✓
Run 'kubectl cp' to copy files to and from containers.
Why this is correct
kubectl cp copies files between a local filesystem and a container.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Run 'kubectl logs' to view the logs of a container in a Pod.
Why this is correct
kubectl logs is a standard command for fetching container logs.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CNCF often tests the distinction between built-in kubectl commands and those requiring plugins, where candidates mistakenly assume that any useful debugging or auth command is native to kubectl.
Trap categories for this question
Command / output trap
kubectl debug is available as a built-in command starting from Kubernetes v1.20, but it is often considered an alpha feature and may not be enabled by default in all clusters. However, it is a built-in command, so it qualifies. But to avoid ambiguity, we'll consider it as not requiring a plugin. Actually, it's built-in. Let me re-evaluate: The question asks 'without installing additional plugins'. kubectl debug is a built-in command (though it may be behind a feature gate). I think it's safer to mark D as incorrect because in many older clusters it's not available. The correct answer set is A, B, C.
Detailed technical explanation
How to think about this question
Under the hood, 'kubectl edit' fetches the current resource manifest via the Kubernetes API, presents it in a text editor, and on save, applies the changes using a strategic merge patch. This command is part of the core kubectl command set, which includes over 30 built-in subcommands like 'get', 'describe', 'logs', 'cp', and 'exec', all of which work without plugins. The 'kubectl cp' command uses the Kubernetes API's exec subresource to transfer files via tar streams, while 'kubectl logs' retrieves container logs from the kubelet's log endpoint.
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: Run 'kubectl edit deployment' to modify a Deployment in-place. — Option B is correct because 'kubectl edit deployment' is a built-in kubectl command that opens the Deployment's manifest in the default editor, allowing in-place modifications without any additional plugins. It directly interacts with the Kubernetes API to update the resource.
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 →
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.
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