Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 425 · 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.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 4 hours?
2. 2.Which of these is an IoT device? (a) a fitness band with app (b) a pencil sharpener (c) a plain wall switch (d) a plain table fan
3. 3.🌐 In an IoT system, which part reads values, decides? (a) actuator (b) Wi-Fi (c) cloud server (d) microcontroller
4. 4.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) a paper calendar (c) a Wi-Fi smart plug (d) an app-controlled bulb
5. 5.🌐 Is a plain table fan an IoT device? (a) not an IoT device (b) an IoT device
6. 6.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) not an IoT device (b) an IoT device
7. 7.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 5 hours?
8. 8.🌐 In an IoT system, which part measures the real world? (a) phone app (b) cloud server (c) sensor (d) Wi-Fi
9. 9.Which of these is an IoT device? (a) a Wi-Fi weather station (b) a pencil sharpener (c) a battery torch (d) a plain wall switch
10. 10.🌐 In an IoT system, which part carries the data? (a) sensor (b) Wi-Fi (c) microcontroller (d) actuator
11. 11.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 2 minutes?
12. 12.What does the phone app do? (a) measures the real world (b) stores data online (c) carries the data (d) shows data to you
13. 13.🌐 Is a fitness band with app an IoT device? (a) not an IoT device (b) an IoT device
14. 14.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) a fitness band with app (c) a plain table fan (d) an app-controlled bulb
15. 15.What does the Wi-Fi link do? (a) acts on a command (b) shows data to you (c) reads values, decides (d) carries the data
16. 16.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “the cloud stores it”? (a) the board reads it (b) the cloud stores it
17. 17.🌐 Is an app-controlled bulb an IoT device? (a) an IoT device (b) not an IoT device
18. 18.🌐 Is a pencil sharpener an IoT device? (a) an IoT device (b) not an IoT device
19. 19.🌐 In an IoT system, which part shows data to you? (a) Wi-Fi (b) actuator (c) phone app (d) cloud server
20. 20.Which of these is not an IoT device? (a) a pencil sharpener (b) a smart energy meter (c) a Wi-Fi doorbell camera (d) a Wi-Fi smart plug
21. 21.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) an app-controlled bulb (c) a smart energy meter (d) a plain wall switch
22. 22.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 4 minutes?
23. 23.🔢 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
24. 24.🌐 Is a paper calendar an IoT device? (a) not an IoT device (b) an IoT device
25. 25.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) it is sent by Wi-Fi (b) the board reads it (c) the app shows it (d) the cloud stores it
26. 26.🔍 Which is the odd one out? (a) a plain wall switch (b) a plain table fan (c) a smart energy meter (d) a wind-up clock
27. 27.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 1 hour?
28. 28.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a fitness band with app (c) a plain table fan (d) a Wi-Fi weather station
29. 29.🌐 How does a home IoT device usually send its data to the app? (a) over Wi-Fi (b) through a candle (c) by shouting (d) by post
30. 30.What does the actuator do? (a) shows data to you (b) carries the data (c) stores data online (d) acts on a command
31. 31.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “the sensor measures”? (a) the sensor measures (b) the app shows it
32. 32.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a Wi-Fi smart plug (c) a Wi-Fi weather station (d) a battery torch
33. 33.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the board reads it (b) the sensor measures (c) the app shows it (d) the cloud stores it
34. 34.🌐 In an IoT system, which part acts on a command? (a) phone app (b) Wi-Fi (c) sensor (d) actuator
35. 35.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 1 minute?
36. 36.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 130 readings take?
37. 37.Which of these is an IoT device? (a) a pencil sharpener (b) a Wi-Fi doorbell camera (c) a paper calendar (d) a battery torch
38. 38.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 5 minutes?
39. 39.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 5 hours?
40. 40.🏠 Which is a smart-home example? (a) a hand fan (b) a printed map (c) a candle in a jar (d) lights on from an app

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