What is the file extension for an Arduino sketch?

• .ard

• .ino

• .sketch

• .cpp

What function in an Arduino sketch runs only once when the board starts?

• loop()

• delay()

• setup()

• start()

Which function is responsible for repetitive execution in Arduino sketches?

• repeat()

• loop()

• execute()

• execute()

What is the purpose of the pinMode() function?

• Turn on the Arduino

• Set a pin as input or output

• Delay program execution

• Write values to a pin

What keyword is used to set a pin to receive signals in pinMode()?

• OUTPUT

• HIGH

• INPUT

• LOW

What does the digitalWrite() function do?

• Sets a pin mode

• Reads a value from a pin

• Writes a HIGH or LOW value to a pin

• Delays the program execution

What is the default value for HIGH in an Arduino board?

• 0V

• 1.5V

• 3.3V or 5V

• 12V

Which Arduino IDE feature is used to upload the sketch to the board?

• Verify

• Save

• Upload

• Compile

What function causes a program to pause for a specific amount of time?

• delay()

• pause()

• stop()

• halt()

How many milliseconds are there in 2 seconds?

• 1000

• 2000

• 5000

• 10000