Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 214 · 40 questions

Remember (Sense, send, store, show): IoT device = an everyday thing that shares data over the internet (usually Wi-Fi and an app). Data flow: sensor → board → Wi-Fi → cloud → app (and commands back to an actuator). Readings sent = total time ÷ time between readings, in the same units.

1. 1.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the app shows it (b) it is sent by Wi-Fi (c) the sensor measures (d) the cloud stores it
2. 2.🔍 Which is the odd one out? (a) a paper calendar (b) a wind-up clock (c) a plain table fan (d) a Wi-Fi weather station
3. 3.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 4 minutes?
4. 4.Which of these is an IoT device? (a) a smart energy meter (b) a plain wall switch (c) a paper calendar (d) a wind-up clock
5. 5.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 5 minutes?
6. 6.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a fitness band with app (c) a smart energy meter (d) a paper calendar
7. 7.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 160 readings take?
8. 8.🌐 Is a fitness band with app an IoT device? (a) an IoT device (b) not an IoT device
9. 9.Which of these is not an IoT device? (a) a fitness band with app (b) a pencil sharpener (c) a Wi-Fi weather station (d) a Wi-Fi smart plug
10. 10.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 4 minutes?
11. 11.🌐 In an IoT system, which part stores data online? (a) cloud server (b) phone app (c) actuator (d) Wi-Fi
12. 12.🌐 In an IoT system, which part reads values, decides? (a) Wi-Fi (b) sensor (c) microcontroller (d) phone app
13. 13.🌐 In an IoT system, which part shows data to you? (a) Wi-Fi (b) microcontroller (c) phone app (d) actuator
14. 14.🌐 Is a Wi-Fi weather station an IoT device? (a) an IoT device (b) not an IoT device
15. 15.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a Wi-Fi smart plug (c) a plain table fan (d) a Wi-Fi weather station
16. 16.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 8 minutes?
17. 17.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) the board reads it (b) the app shows it (c) the sensor measures (d) it is sent by Wi-Fi
18. 18.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 160 readings take?
19. 19.What does the actuator do? (a) stores data online (b) acts on a command (c) reads values, decides (d) shows data to you
20. 20.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 180 readings take?
21. 21.🌐 How does a home IoT device usually send its data to the app? (a) by post (b) by shouting (c) through a candle (d) over Wi-Fi
22. 22.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “the board reads it”? (a) the app shows it (b) the board reads it
23. 23.🔍 Which is the odd one out? (a) a smart energy meter (b) a Wi-Fi doorbell camera (c) a plain wall switch (d) a Wi-Fi weather station
24. 24.🌐 Is a wind-up clock an IoT device? (a) not an IoT device (b) an IoT device
25. 25.Which of these is an IoT device? (a) a battery torch (b) a Wi-Fi doorbell camera (c) a wind-up clock (d) a plain table fan
26. 26.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 1 minute?
27. 27.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a Wi-Fi smart plug (c) a pencil sharpener (d) an app-controlled bulb
28. 28.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 3 minutes?
29. 29.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 130 readings take?
30. 30.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 10 minutes?
31. 31.Which of these is not an IoT device? (a) an app-controlled bulb (b) a fitness band with app (c) a Wi-Fi doorbell camera (d) a paper calendar
32. 32.🏠 Which is a smart-home example? (a) a candle in a jar (b) a printed map (c) a hand fan (d) lights on from an app
33. 33.🌐 In an IoT system, which part acts on a command? (a) sensor (b) cloud server (c) actuator (d) phone app
34. 34.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the app shows it (b) the board reads it (c) the sensor measures (d) the cloud stores it
35. 35.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 200 readings take?
36. 36.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) a battery torch (c) a Wi-Fi smart plug (d) an app-controlled bulb
37. 37.Which of these is an IoT device? (a) a paper calendar (b) a plain table fan (c) an app-controlled bulb (d) a pencil sharpener
38. 38.🌐 Is a paper calendar an IoT device? (a) an IoT device (b) not an IoT device
39. 39.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) a plain wall switch (c) a Wi-Fi doorbell camera (d) a fitness band with app
40. 40.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 50 readings take?

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