CyberCertPrepOT Security FundamentalsOT Fundamentals: Network Architecture & ProtocolsMEDIUMFree question
A DNP3 outstation sends data to the master without being polled after a breaker trips. What is this feature called?
- A.Unsolicited response reporting of a change event
- B.Select before operate staging of a relay control point
- C.Class zero integrity poll of static data
- D.Time synchronization broadcast sent to outstations
Why A is correct
Unsolicited responses let an outstation report an event as it happens instead of waiting for the next poll, which saves bandwidth on slow links. Select before operate is a control sequence, and an integrity poll is master initiated.
Know someone studying for OT Security Fundamentals? Send them this one.