When will you incur costs with an Elastic IP address (EIP)?
A.
When an EIP is allocated.
B.
When it is allocated and associated with a running instance.
C.
When it is allocated and associated with a stopped instance.
D.
Costs are incurred regardless of whether the EIP is associated with a running instance.
Explanation:
You can have one Elastic IP (EIP) address associated with a running instance at no charge. If you associate
additional EIPs with that instance, you will be charged for each additional EIP associated with that instance per
hour on a pro rata basis.
C
Agree, C is correct.
C
https://aws.amazon.com/cn/ec2/faqs/
弹性IP
thanks Many .. here is why it charges in case of associating EIP to shutdown instance
Q: Why am I charged when my Elastic IP address is not associated with a running instance?
In order to help ensure our customers are efficiently using the Elastic IP addresses, we impose a small hourly charge for each address when it is not associated to a running instance.