CA_4 IoT

What components make up an IoT device?

• Sensors + Actuators + Networks

• Physical object + Controller + Networks

• Physical object + Controller + Sensors + Actuators + Networks

• Physical object + Actuators + Networks

What is the function of an actuator in an IoT device?

• Sense the environment

• Move or control the mechanism of the system

• Generate control signals for sensors

• Process information in a certain manner

What is the purpose of a sensor in a device?

• Generate control signals

• Sense the environment

• Connect to the Internet

• Move the actuators

According to the Oxford Dictionary, what is the definition of a sensor?

• A device that connects to the Internet

• A device that measures physical properties

• A device that processes information

• A device that controls actuators

What do sensors do in a system?

• Amplify electrical signals

• Sense physical changes in characteristics

• Generate control signals

• Convert energy into sound waves

What is the purpose of a transducer?

• Connect to the Internet

• Sense physical changes in characteristics

• Convert energy of one kind into another

• Generate control signals for actuators

What is the difference between a sensor and a transducer?

• Sensors connect to the Internet, while transducers sense energy forms

• Sensors sense physical changes, while transducers convert energy

• Sensors amplify sound waves, while transducers convert energy

• Sensors sense energy forms, while transducers switch voltages

What is a key feature of a sensor?

• Sensitive to all properties

• Insensitive to any property likely to be encountered

• Depends on its resolution for accuracy

• Influences the measured property

What does the resolution of a sensor indicate?

• The smallest change it can detect

• The largest change it can detect

• The most common change it can detect

• The average change it can detect

How does the resolution of a sensor affect its precision?

• Higher resolution leads to lower precision

• Lower resolution leads to higher precision

• Resolution determines accuracy

• Resolution does not affect precision