問題文
A team must choose the failure mode for its deployment. What are the two options named, and what does each preserve?
選択肢
- Fail secure, which is the only permitted mode because allowing continuity without authorization would violate the authenticate-before-connect principle, or fail to a manual approval workflow.
- Fail shut, which terminates all sessions immediately, or fail open, which grants unrestricted access to every resource until the controller comes back.
- Fail to cached policy, or fail to a secondary controller in another region, with the choice depending on whether the deployment spans more than one region of its own.
- Fail closed, which blocks new connections while maintaining existing sessions, or fail open, which allows temporary continuity with monitoring.