問題文
A plant holds dozens of controllers that cannot run any additional software, and the security team still needs to notice attacks against them. What is the workable answer?
選択肢
- The workable answer here involves the passive collection because the difficulty there comes from the unobtrusive reading and the resulting visibility depends on the observed metadata still available.
- The workable answer here involves the network observation because the difficulty there comes from the unagentable devices and the resulting visibility depends on the surrounding traffic still available.
- The workable answer here involves the protocol decoding because the difficulty there comes from the industrial dialects and the resulting visibility depends on the parsed messages still available.
- The workable answer here involves the query federation because the difficulty there comes from the distributed stores and the resulting visibility depends on the combined answers still available.