CKAD Application Deployment Practice Question
A Deployment named 'api' has 6 replicas. You want to perform a rolling update with the following constraints: at most 2 pods can be unavailable during the update, and at most 1 extra pod can be created above the desired 6. Which strategy configurations achieve this? (Choose TWO)
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
✓
strategy: rollingUpdate: maxSurge: 1 maxUnavailable: 2
Uses absolute numbers: maxSurge=1 and maxUnavailable=2, directly matching the constraints. Option B uses percentages: 16% of 6 = 0.96 rounded up to 1, and 33% of 6 = 1.98 rounded up to 2, so it also yields maxSurge=1 and maxUnavailable=2. Option C has maxSurge=2, exceeding the surge limit. Option D has maxUnavailable=3, exceeding the unavailable limit. Option E has maxUnavailable=1, which is more restrictive than the allowed maximum of 2; while it technically satisfies the constraint, it is not the intended configuration. Therefore, the correct answers are A and B.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
strategy: rollingUpdate: maxSurge: 1 maxUnavailable: 2
Why this is correct
Absolute numbers match constraints.
- ✓
strategy: rollingUpdate: maxSurge: 16% maxUnavailable: 33%
Why this is correct
16% of 6 is ~1 (ceil=1), 33% of 6 is ~2 (ceil=2), so same constraints.
- ✗
strategy: rollingUpdate: maxSurge: 2 maxUnavailable: 2
Why it's wrong here
maxSurge too high (allows 2 extra pods).
- ✗
strategy: rollingUpdate: maxSurge: 1 maxUnavailable: 3
Why it's wrong here
maxUnavailable too high.
- ✗
strategy: rollingUpdate: maxSurge: 1 maxUnavailable: 1
Why it's wrong here
maxUnavailable is too restrictive.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CKAD 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 CKAD exam.