Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 577 · 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 comes first: “the board reads it” or “it is sent by Wi-Fi”? (a) it is sent by Wi-Fi (b) the board reads it
2. 2.🌐 In an IoT system, which part carries the data? (a) Wi-Fi (b) cloud server (c) phone app (d) sensor
3. 3.🌐 How does a home IoT device usually send its data to the app? (a) by shouting (b) by post (c) over Wi-Fi (d) through a candle
4. 4.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) an IoT device (b) not an IoT device
5. 5.🌐 In an IoT system, which part measures the real world? (a) cloud server (b) microcontroller (c) Wi-Fi (d) sensor
6. 6.🌐 Is an app-controlled bulb an IoT device? (a) an IoT device (b) not an IoT device
7. 7.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 40 readings take?
8. 8.🌐 Is a battery torch an IoT device? (a) an IoT device (b) not an IoT device
9. 9.What does the sensor do? (a) stores data online (b) acts on a command (c) measures the real world (d) shows data to you
10. 10.🔍 Which is the odd one out? (a) a paper calendar (b) a Wi-Fi doorbell camera (c) a Wi-Fi smart plug (d) an app-controlled bulb
11. 11.🌐 In an IoT system, which part stores data online? (a) cloud server (b) sensor (c) microcontroller (d) phone app
12. 12.🔢 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
13. 13.🔢 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
14. 14.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 100 readings take?
15. 15.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 3 hours?
16. 16.Which of these is an IoT device? (a) a battery torch (b) a plain wall switch (c) a Wi-Fi smart plug (d) a wind-up clock
17. 17.What does the phone app do? (a) carries the data (b) stores data online (c) measures the real world (d) shows data to you
18. 18.🔍 Which is the odd one out? (a) a pencil sharpener (b) a wind-up clock (c) an app-controlled bulb (d) a plain wall switch
19. 19.🌐 Is a pencil sharpener an IoT device? (a) not an IoT device (b) an IoT device
20. 20.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) an app-controlled bulb (c) a Wi-Fi smart plug (d) a plain wall switch
21. 21.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a wind-up clock (c) a paper calendar (d) a battery torch
22. 22.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 3 hours?
23. 23.What does the microcontroller do? (a) stores data online (b) reads values, decides (c) carries the data (d) measures the real world
24. 24.🔍 Which is the odd one out? (a) a smart energy meter (b) a fitness band with app (c) an app-controlled bulb (d) a wind-up clock
25. 25.Which of these is an IoT device? (a) a plain table fan (b) a Wi-Fi doorbell camera (c) a wind-up clock (d) a battery torch
26. 26.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 6 minutes?
27. 27.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 90 readings take?
28. 28.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a Wi-Fi smart plug (c) a pencil sharpener (d) a fitness band with app
29. 29.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 130 readings take?
30. 30.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “the cloud stores it”? (a) the cloud stores it (b) the app shows it
31. 31.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 4 hours?
32. 32.What does the cloud server do? (a) measures the real world (b) carries the data (c) reads values, decides (d) stores data online
33. 33.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 1 hour?
34. 34.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) it is sent by Wi-Fi (b) the cloud stores it (c) the app shows it (d) the board reads it
35. 35.Which of these is not an IoT device? (a) an app-controlled bulb (b) a Wi-Fi weather station (c) a Wi-Fi smart plug (d) a wind-up clock
36. 36.🔍 Which is the odd one out? (a) a paper calendar (b) a plain wall switch (c) a fitness band with app (d) a wind-up clock
37. 37.🏠 Which is a smart-home example? (a) a hand fan (b) a candle in a jar (c) lights on from an app (d) a printed map
38. 38.🌐 In an IoT system, which part shows data to you? (a) Wi-Fi (b) phone app (c) cloud server (d) sensor
39. 39.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 5 hours?
40. 40.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 160 readings take?

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