How should trust boundaries be established in an IoT system?
- only between the internal devices and devices located on the internet
- always between two neighboring zones
- between the internal devices and internet devices, but not third party application hosts
- between two entities where the level of trust at either end of a flow is different
Explanation: After the system architecture is depicted and zones added, trust boundaries can be added to the DFD. Trust boundaries delimit sections of the network where the level of trust between entities at either end of a flow is different. Trust boundaries should only cross data flows.
Exam with this question: IoT Security 1.1 Chapter 6 Quiz Answers
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