CKAD Practice Question: Application Environment, Configuration and Security
This CKAD practice question tests your understanding of application environment, configuration and security. 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.
A namespace 'team-a' has a ResourceQuota that sets 'requests.cpu: 4' and 'limits.cpu: 8'. A developer tries to create a pod with 'resources.requests.cpu: 2' and 'resources.limits.cpu: 10'. What happens?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The pod is rejected because the limit (10) exceeds the quota's allowed limit
The pod is rejected because the ResourceQuota in namespace 'team-a' sets a hard limit of 8 CPUs for limits.cpu across all pods. The developer's pod specifies a limit of 10 CPUs, which exceeds this quota. Kubernetes enforces ResourceQuota at admission time, so any resource request or limit that violates the quota's constraints will cause the pod creation to be denied.
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.
✓
The pod is rejected because the limit (10) exceeds the quota's allowed limit
Why this is correct
A ResourceQuota enforces that the sum of limits across all pods in the namespace does not exceed 8.
Related concept
Read the scenario before looking for a memorised answer.
✗
The pod is created because the request (2) is within the quota
Why it's wrong here
The quota checks both requests and limits. The limit exceeds the allowed total limit.
✗
The pod is created but its limit is automatically reduced to 8
Why it's wrong here
Kubernetes does not automatically adjust resource limits; it rejects the creation.
✗
The pod is created, but it will be evicted immediately
Why it's wrong here
The API server rejects the pod during admission; it never runs.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume only the request is checked against the quota, but Kubernetes enforces both requests and limits independently, and a pod with a limit exceeding the quota's limit will be rejected even if the request is within bounds.
Detailed technical explanation
How to think about this question
ResourceQuota is enforced by the kube-apiserver's admission controller, which validates all resource requests and limits against the quota's hard limits before the pod is persisted in etcd. The quota applies to the sum of all pods in the namespace, not individual pods, but a single pod can be rejected if its own specification exceeds the quota's total allowed value. In real-world scenarios, this prevents a single workload from monopolizing namespace resources, ensuring fair sharing among multiple teams or applications.
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 CKAD 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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CKAD question in full detail.
Application Environment, Configuration and Security — This question tests Application Environment, Configuration and Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The pod is rejected because the limit (10) exceeds the quota's allowed limit — The pod is rejected because the ResourceQuota in namespace 'team-a' sets a hard limit of 8 CPUs for limits.cpu across all pods. The developer's pod specifies a limit of 10 CPUs, which exceeds this quota. Kubernetes enforces ResourceQuota at admission time, so any resource request or limit that violates the quota's constraints will cause the pod creation to be denied.
What should I do if I get this CKAD 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.
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Question Discussion
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