フリー問題

問題文

A workload needs a disk that survives the deletion of the instance it is attached to. Which service provides it?

選択肢

1. The block storage service, which creates volumes that exist independently of any instance and can be attached and detached.
2. The object storage service, because it stores data durably, so a workload that needs a block device has to reach it as a set of objects instead.
3. The image service, because it also holds disk contents, which leaves every write from the instance landing in a template that other instances boot from.
4. The compute service, since the disk of an instance is part of that instance and the component which creates the instance is therefore also the component which provides any storage that instance is going to need for as long as it exists.