After restoring an Amazon RDS snapshot from 3 days ago, a company’s Development team cannot connect to the restored RDS DB instance.
What is the likely cause of this problem?
The restored DB instance does not have Enhanced Monitoring enabled
The production DB instance is using a custom parameter group
The restored DB instance is using the default security group
The production DB instance is using a custom option group
Explanations:
Enhanced Monitoring is not required to connect to an RDS DB instance. It is for monitoring.
A custom parameter group would not typically prevent a connection; it could affect behavior.
The default security group likely does not allow inbound traffic from the development team.
A custom option group affects features but does not block DB instance connectivity.
I design that the answer is:
The restored DB instance is using the default security group