AWS Certified SysOps Administrator – Associate (legacy) — Question 299

A user has launched an RDS postgreSQL DB with AWS. The user did not specify the maintenance window during creation. The user has configured RDS to update the DB instance type from micro to large. If the user wants to have it during the maintenance window, what will AWS do?

Answer options

• A. AWS will not allow to update the DB until the maintenance window is configured
• B. AWS will select the default maintenance window if the user has not provided it
• C. AWS will ask the user to specify the maintenance window during the update
• D. It is not possible to change the DB size from micro to large with RDS

Correct answer: B

Explanation

If a user does not specify a maintenance window when creating an Amazon RDS DB instance, AWS automatically assigns a default 30-minute maintenance window selected from an 8-hour block of time per region. Consequently, any deferred modifications scheduled for the maintenance window will execute during this default period. Scaling the instance class is fully supported, and AWS does not require the user to manually define a window before applying the update.