CyberCertPrepOT Security FundamentalsOT Fundamentals: ICS/SCADA BasicsEASYFree question
A discrete float switch in a tank reports only two states to the PLC. The input point representing this on/off signal is classified as a:
- A.Analog input
- B.Pulse-width output
- C.Digital (discrete) input
- D.Serial register
Why C is correct
A two-state on/off signal such as a float switch is a digital or discrete input. Analog inputs, by contrast, represent continuously variable measurements like temperature or pressure.
Know someone studying for OT Security Fundamentals? Send them this one.