Chapter 4
- 3
Moving from RDS to EC2 doesn't solve the storage problem. RDS also has autoscaling.
Using S3 might reduce the incoming writes, but it is very complex, therefore, this isn't correct.
Enabling autoscaling storage is the easiest solution, and is the correct answer.
A read replica will not help with full storage, so this cannot be correct.
- 2
If you cannot connect, then the account details don't matter at this stage, so this isn't correct.
The inbound rules are likely blocking any connections to the RDS instance from your EC2, so this is the correct answer.
The outbound rules are set to allow all outbound traffic by default, so this is unlikely to be the cause.
As you are connecting from within your VPC, you will not need a NAT to access it, so this is incorrect.
- 1
Primary is upgraded first, so this is the correct answer.
There is no downtime during an upgrade, so this is not correct.
The standby...
