A user has scheduled the maintenance window of an RDS DB on Monday at 3 AM. Which of the below mentioned events
may force to take the DB instance offline during the maintenance window?

A.
Enabling Read Replica

B.
Making the DB Multi AZ

C.
DB password change

D.
Security patching

Explanation:
Amazon RDS performs maintenance on the DB instance during a user-definable maintenance window. The system may
be offline or experience lower performance during that window. The only maintenance events that may require RDS to
make the DB instance offline are:
Scaling compute operations Software patching.
Required software patching is automatically scheduled only for patches that are security and durability related.
Such patching occurs infrequently (typically once every few months. and seldom requires more than a fraction of the
maintenance window.