During planning, an engineer compares reserving a static external IP address with reserving a static internal IP address in a VPC. Which statement accurately distinguishes the two?
- AA static external address is reachable from the internet, while a static internal address is drawn from a subnet range and routable only within the VPC. Correct
- BA static external address is a global resource shared across all regions, whereas a static internal address is pinned to one zone within a region.
- CA static internal address is reachable from the public internet once reserved, while a static external address stays private to the VPC.
- DBoth address types are billed identically whether attached or idle, because reservation cost never depends on whether the address is in use.
Why A is correct: External addresses expose a resource publicly, whereas internal addresses come from a subnet's range and are reachable only inside the VPC and its connected networks.
Why B is wrong: It is tempting to map external to global, but regional external addresses are regional resources, so the stated global-versus-zonal split misrepresents them.
Why C is wrong: This inverts the two: internal addresses are routable only within the VPC and connected networks, and external addresses are the ones reachable from the internet.
Why D is wrong: The comparison here is about reachability, and the billing claim is also inaccurate because a reserved external address that sits unattached can incur a charge.