CompTIA Cloud+ (CV0-003) — Question 252

A systems administrator is deploying a new version of a website. The website is deployed in the cloud using a VM cluster. The administrator must then deploy the new version into one VM first. After a period of time, if there are no issues detected, a second VM will be updated. This process must continue until all the VMs are updated. Which of the following upgrade methods is being implemented?

Answer options

• A. Canary
• B. Blue-green
• C. Rolling
• D. Staging

Correct answer: C

Explanation

The correct answer is 'Rolling' because this method involves updating a few instances at a time, ensuring that the system remains operational while gradually deploying changes. The other options, such as Canary and Blue-green, refer to different strategies where deployments either test a small subset of users or switch traffic between two environments, which does not match the described gradual updating process.