mediumMultiple ChoiceObjective-mapped
200-901 Practice Question: A company uses a blue/green deployment strategy…
A company uses a blue/green deployment strategy for their web application. The current live version is blue, and a new version green is ready. The load balancer currently routes all traffic to blue. What is the correct next step to switch traffic to green with minimal downtime?
⚠ Common exam trap
Cisco often tests the distinction between deployment strategies, and the trap here is confusing a rolling update (which gradually replaces pods) with a blue/green deployment (which switches traffic at the load balancer level), leading candidates to incorrectly select Option B.
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
✓
Update the load balancer to route all traffic to green
In a blue/green deployment, the entire new version (green) is deployed alongside the current live version (blue). The correct next step to switch traffic with minimal downtime is to update the load balancer to route all traffic to green. This instant switch avoids the incremental risk of rolling updates and ensures a clean cutover that can be quickly reverted if issues arise.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Scale down blue pods and scale up green
Why it's wrong here
This could cause partial downtime and is not the standard blue/green approach.
- ✗
Perform a rolling update from blue to green
Why it's wrong here
Rolling update is a different strategy, not blue/green.
- ✗
Delete the blue deployment and create green
Why it's wrong here
This would cause downtime during deletion.
- ✓
Update the load balancer to route all traffic to green
Why this is correct
This switches traffic instantly with minimal downtime.
Go deeper
Related to this question
About these practice questions
Courseiva writes every 200-901 question from scratch — 989 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-901 practice question is part of Courseiva's free Cisco 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 200-901 exam.