Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 698 · 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.🌐 In an IoT system, which part carries the data? (a) actuator (b) cloud server (c) sensor (d) Wi-Fi
2. 2.What does the cloud server do? (a) stores data online (b) carries the data (c) measures the real world (d) reads values, decides
3. 3.🌐 In an IoT system, which part acts on a command? (a) sensor (b) Wi-Fi (c) phone app (d) actuator
4. 4.🌐 Is a wind-up clock an IoT device? (a) not an IoT device (b) an IoT device
5. 5.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 150 readings take?
6. 6.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 4 hours?
7. 7.What does the actuator do? (a) shows data to you (b) reads values, decides (c) stores data online (d) acts on a command
8. 8.🌐 How does a home IoT device usually send its data to the app? (a) by post (b) through a candle (c) by shouting (d) over Wi-Fi
9. 9.🔍 Which is the odd one out? (a) a plain table fan (b) a pencil sharpener (c) a plain wall switch (d) a Wi-Fi weather station
10. 10.🌐 Is a fitness band with app an IoT device? (a) not an IoT device (b) an IoT device
11. 11.🌐 In an IoT system, which part measures the real world? (a) Wi-Fi (b) phone app (c) sensor (d) actuator
12. 12.What does the phone app do? (a) carries the data (b) shows data to you (c) reads values, decides (d) stores data online
13. 13.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 6 hours?
14. 14.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) not an IoT device (b) an IoT device
15. 15.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 50 readings take?
16. 16.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the app shows it (b) the cloud stores it (c) it is sent by Wi-Fi (d) the board reads it
17. 17.What does the microcontroller do? (a) acts on a command (b) reads values, decides (c) carries the data (d) measures the real world
18. 18.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) the board reads it (b) the sensor measures (c) the app shows it (d) it is sent by Wi-Fi
19. 19.Which of these is an IoT device? (a) a wind-up clock (b) an app-controlled bulb (c) a plain wall switch (d) a pencil sharpener
20. 20.🌐 Is a plain wall switch an IoT device? (a) an IoT device (b) not an IoT device
21. 21.🔍 Which is the odd one out? (a) a battery torch (b) a wind-up clock (c) a fitness band with app (d) a plain wall switch
22. 22.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 3 hours?
23. 23.What does the sensor do? (a) reads values, decides (b) acts on a command (c) stores data online (d) measures the real world
24. 24.What does the Wi-Fi link do? (a) shows data to you (b) measures the real world (c) acts on a command (d) carries the data
25. 25.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) a fitness band with app (c) an app-controlled bulb (d) a paper calendar
26. 26.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 4 hours?
27. 27.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 40 readings take?
28. 28.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 7 minutes?
29. 29.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “it is sent by Wi-Fi”? (a) the sensor measures (b) it is sent by Wi-Fi
30. 30.🔍 Which is the odd one out? (a) a wind-up clock (b) an app-controlled bulb (c) a Wi-Fi doorbell camera (d) a Wi-Fi smart plug
31. 31.🏠 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
32. 32.🔍 Which is the odd one out? (a) a plain table fan (b) a Wi-Fi smart plug (c) a smart energy meter (d) a Wi-Fi weather station
33. 33.Which of these is an IoT device? (a) a paper calendar (b) a pencil sharpener (c) a Wi-Fi smart plug (d) a battery torch
34. 34.Which of these is an IoT device? (a) a Wi-Fi doorbell camera (b) a battery torch (c) a paper calendar (d) a wind-up clock
35. 35.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 2 minutes?
36. 36.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 6 hours?
37. 37.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 30 readings take?
38. 38.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) a pencil sharpener (c) an app-controlled bulb (d) a Wi-Fi smart plug
39. 39.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 3 hours?
40. 40.Which of these is not an IoT device? (a) a smart energy meter (b) a Wi-Fi doorbell camera (c) a Wi-Fi weather station (d) a plain wall switch

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