問題文
A large-scale system runs the same service on forty machines. To ship a new version the organization takes a few machines at a time out of service, puts the new version on them, and returns them, until every machine has been updated. Which release strategy does this describe?
選択肢
- it replaces the running instances with the updated versions so the service stays continuously available
- it replaces the hidden feature with the visible feature so the service stays continuously available
- it replaces the entire audience with the selected segment so the service stays continuously available
- it replaces the active environment with the idle environment so the service stays continuously available