The following scenario () belongs to the control message delivery process? (Multiple choice)

Ar501L1Rc model device off status indicator is ()?

API application scenarios are divided into two kinds, some manufacturers only do sensors, there are a variety of sensors, there are cars, there are also families and Camera, which is what we call horizontal ecology.

The smart home network includes a basic home network and a smart interconnection network.

The following sets of processes are arranged in order, and the correct ones are ()? (Multiple choice)