IOT Quiz

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What is the purpose of the void setup() function in the Blink example?

• To initialize the serial communication

• To set the LED pin as output

• To turn the LED on

• To turn the LED off

What is the role of the pushButton variable in the Digital Read Serial example?

• It stores the pin number for the button

• It stores the state of the button

• It initializes the button

• It sets the button as input

How does the Fading a LED example control the brightness of the LED?

• By using analogWrite to set brightness

• By using digitalWrite to turn it on and off

• By changing the resistance

• By changing the voltage

What is the purpose of the microsecondsToInches function in the Ping Ultrasonic Range Finder example?

• To convert duration to inches

• To convert duration to centimeters

• To measure distance

• To initialize the sensor

What happens when the sensorReading in the Detect a Knock example exceeds the threshold?

• The LED state toggles

• The sensor stops reading

• The program ends

• The serial communication stops

What is the function of the loop() method in the Blink example?

• To set up the hardware

• To read sensor data

• To initialize variables

• To run the code repeatedly

In the Detect a Knock example, what does the program do when a knock is detected?

• It stops all operations

• It sends a notification

• It toggles the LED state

• It resets the sensor

What is the purpose of the pinMode function in the Digital Read Serial example?

• To write a value to the pin

• To read the pin state

• To initialize the serial communication

• To set the pin as input or output

What is the significance of the loop() method in Arduino sketches?

• It sets up the hardware

• It runs continuously after setup()

• It initializes variables

• It runs once at the start