CompTIA Cloud+ (CV0-004) — Question 55

A cloud engineer needs to deploy a new version of a web application to 100 servers. In the past, new version deployments have caused outages. Which of the following deployment types should the cloud engineer implement to prevent the outages from happening this time?

Answer options

• A. Rolling
• B. Blue-green
• C. Canary
• D. Round-robin

Correct answer: B

Explanation

The blue-green deployment strategy is effective in preventing outages because it allows for a separate staging environment where the new version can be tested before switching traffic. In contrast, rolling deployments may still cause interruptions, canary deployments only test with a small subset, and round-robin does not address version control or outage prevention.