KCNA Cloud Native Application Delivery Practice Question
Which TWO of the following are deployment patterns that can be used to update applications with minimal downtime? (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
✓
Blue-green deployment
Blue-green and canary are deployment patterns that reduce downtime by gradually shifting traffic. Rolling update is also a pattern but the question asks for minimal downtime; blue-green and canary are specifically designed for that.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
DaemonSet deployment
Why it's wrong here
DaemonSet runs pods on all nodes; it's not a deployment pattern with minimal downtime.
- ✗
Sidecar deployment
Why it's wrong here
A sidecar is a pattern for adding functionality to a pod, not a deployment strategy.
- ✗
Recreate deployment
Why it's wrong here
A recreate deployment terminates all existing pods before creating new ones, causing a period of total unavailability that violates the minimal-downtime requirement. It is tempting because it is the simplest method for ensuring a clean state, and would be correct when the application can tolerate a brief full outage, such as during a scheduled maintenance window.
- ✓
Blue-green deployment
Why this is correct
Blue-green deploys a new version alongside the old and switches traffic after testing.
- ✓
Canary deployment
Why this is correct
Canary gradually shifts a small percentage of traffic to the new version.
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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.