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CV0-004 Practice Question: Which deployment strategy minimizes risk by…
Which deployment strategy minimizes risk by gradually shifting a small percentage of traffic to a new version before full rollout?
⚠ Common exam trap
CompTIA often tests the distinction between canary and rolling deployments, where candidates mistakenly think rolling deployment also uses a small traffic percentage, but rolling updates instances sequentially without the deliberate traffic-splitting and validation phase that defines a canary.
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
✓
Canary deployment
A canary deployment minimizes risk by routing a small percentage of traffic (e.g., 5-10%) to the new version while the majority continues to use the stable version. This allows real-world validation of the new version under production load before a full rollout, and if issues are detected, traffic can be instantly redirected back to the old version. The strategy is named after the 'canary in a coal mine' concept, where early detection of problems prevents widespread impact.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Canary deployment
Why this is correct
Canary releases send a small amount of traffic to the new version to test stability.
- ✗
In-place deployment
Why it's wrong here
In-place updates the same instance without traffic routing control.
- ✗
Rolling deployment
Why it's wrong here
Rolling updates replace instances sequentially but do not route a small percentage initially.
- ✗
Blue-green deployment
Why it's wrong here
Blue-green switches all traffic at once, not gradual.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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