Which scenario best illustrates machine-to-machine communication in an IoT system?

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Multiple Choice

Which scenario best illustrates machine-to-machine communication in an IoT system?

Machine-to-machine communication in IoT means devices talk directly to each other to trigger automated actions without human input. An autonomous ambulance coordinating with traffic signals to change lights shows this clearly: the ambulance’s systems exchange real-time data with the traffic-control infrastructure, and the signals adjust automatically to give the ambulance priority. This is direct device-to-device coordination across a broader system (vehicle to infrastructure) that enhances safety and efficiency without a human deciding each step. The other scenarios involve human involvement or domestic automation rather than cross-device coordination at the system level. A driver-initiated GPS route change relies on a person deciding and acting. A thermostat changing based on data from a hub happens within a home, but it doesn’t demonstrate autonomous communication between separate, external systems. A smartphone alert about rainfall is directed to a person, not between machines.

Machine-to-machine communication in IoT means devices talk directly to each other to trigger automated actions without human input. An autonomous ambulance coordinating with traffic signals to change lights shows this clearly: the ambulance’s systems exchange real-time data with the traffic-control infrastructure, and the signals adjust automatically to give the ambulance priority. This is direct device-to-device coordination across a broader system (vehicle to infrastructure) that enhances safety and efficiency without a human deciding each step.

The other scenarios involve human involvement or domestic automation rather than cross-device coordination at the system level. A driver-initiated GPS route change relies on a person deciding and acting. A thermostat changing based on data from a hub happens within a home, but it doesn’t demonstrate autonomous communication between separate, external systems. A smartphone alert about rainfall is directed to a person, not between machines.

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