AWS Certified SysOps Administrator – Associate — Question 425

A SysOps administrator wants to manage a web server application with AWS Elastic Beanstalk. The Elastic Beanstalk service must maintain full capacity for new deployments at all times.
Which deployment policies satisfy this requirement? (Choose two.)

Answer options

• A. All at once
• B. Immutable
• C. Rebuild
• D. Rolling
• E. Rolling with additional batch

Correct answer: B, E

Explanation

The Immutable deployment policy ensures full capacity by launching a parallel Auto Scaling group with new instances and only cutting over after they pass health checks. Similarly, Rolling with additional batch maintains full capacity by launching a new batch of instances before taking any existing instances offline for updates. Other methods like All at once, Rebuild, and standard Rolling temporarily reduce capacity or cause downtime during the deployment process.