1) An ultrasonic sensor measures the distance of an object by emitting _________ waves and then converting the reflected wave back into an electrical signal. a) radio b) water c) micro d) sound 2) An oil company in the desert uses an ultrasonic sensor for oil level sensing. Can the company use the ultrasonic sensor effectively if there is ust in the air? a) Yes b) No 3) Look at the image to the right. What are the name of the ports enclosed in red? a) LAN b) 40 Pin GPIO ribbon c) HDMI d) USB 4) Look at the image to the right. Which button is used to upload the Arduino sketch? a) button 1 b) button 2 c) button 3 d) button 4 5) In order to connect the Falcon HAT to the Raspberry Pi you need to use a ___________ cable. a) Power b) 40 Pin GPIO ribbon c) LAN d) USB 6) The Raspberry Pi is an example of a low-cost powerful mini-computer? a) True b) False 7) In the parking assistant system you constructed and programmed the Raspberry Pi and Falcon hat to simulate digital inputs and outputs. This is an example of an _______________ system. a) audio b) algorithm c) embedded d) ethernet 8) Look at the extracted code to the right. What pin number is the LED connected to? a) 5 b) 6 c) 8 d) 21 9) Look at the extracted code to the right. What pin number is the Buzzer connected to? a) 5 b) 6 c) 7 d) 21 10) Look at the extracted code to the right. How long the LED will turn on? a) 0 second b) 1 second c) 50 seconds d) 100 seconds 11) What is the name of the device  (  1  ) ?   a) Ultrasonic Sensor b) Falcon hat c) LAN cable d) 40 Pin GPIO ribbon 12) What is the name of the cable ( 2 ) ? a) USB cable b) Power cable c) LAN cable d) 40 Pin GPIO ribbon 13) What is the name of the device (  3  ) ? a) Raspberry Pi b) Falcon hat c) Ultrasonic Sensor d) Buzzer module 14) What is the name of the device (  4  )  ? a) LED module b) Buzzer module c) LAN cable d) Falcon hat 15) What is the name of the cable ( 5 ) a) USB cable b) LAN cable c) Power cable d) 40 Pin GPIO ribbon 16) What is the LED/Buzzer status if an object is 40cm from the ultrasonic sensor?   a) The LED is ON and the buzzer is ON. b) The LED is ON and the buzzer is OFF c) The LED is OFF and the buzzer is ON d) The LED is OFF and the buzzer is OFF 17) What is the LED/Buzzer status if an object is 140cm from the ultrasonic sensor? a) The LED is ON and the buzzer is ON b) The LED is ON and the buzzer is OFF c) The LED is OFF and the buzzer is ON d) The LED is OFF and the buzzer is OFF 18) What is the LED/Buzzer status if an object is 70cm from the ultrasonic sensor? a) The LED is ON and the buzzer is ON b) The LED is ON and the buzzer is OFF c) The LED is OFF and the buzzer is ON d) The LED is OFF and the buzzer is OFF 19) What is the display message if an object is 30cm from the ultrasonic sensor? a) ‘You are very close to the obstacle.’ b) ‘You are at a considerable distance.’ c) ‘You are very far from the object’ d) 30cm 20) What is the display message if an object is 80cm from the ultrasonic sensor? a) ‘You are very close to the obstacle.’ b) ‘You are at a considerable distance.’ c) ‘You are very far from the object’ d) 80cm

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