KCNA Kubernetes Fundamentals Practice Question
Which field in a Pod's container specification defines the minimum amount of CPU guaranteed to the container?
⚠ Common exam trap
Test-takers frequently confuse `requests` (guaranteed minimum) with `limits` (maximum allowed), especially since both are defined under `resources` and both use the same unit (e.g., millicores).
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
✓
resources.requests.cpu
In Kubernetes, the `resources.requests.cpu` field specifies the minimum amount of CPU guaranteed to a container. This value is used by the scheduler to ensure the node has enough allocatable CPU, and by the kubelet to enforce CPU shares via the Completely Fair Scheduler (CFS) in the Linux kernel.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
spec.containers.cpu
Why it's wrong here
There is no such direct field; CPU is under resources.
- ✓
resources.requests.cpu
Why this is correct
Requests specify the minimum amount of CPU reserved for the container.
- ✗
resources.limits.cpu
Why it's wrong here
Limits are the maximum, not the minimum guarantee.
- ✗
spec.nodeSelector
Why it's wrong here
nodeSelector is for scheduling on specific nodes, not CPU guarantees.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.