Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 795 · 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, what comes right after “the sensor measures”? (a) the app shows it (b) the board reads it (c) it is sent by Wi-Fi (d) the cloud stores it
2. 2.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 5 hours?
3. 3.🌐 Is a battery torch an IoT device? (a) an IoT device (b) not an IoT device
4. 4.🌐 Is a Wi-Fi weather station an IoT device? (a) not an IoT device (b) an IoT device
5. 5.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 50 readings take?
6. 6.🏠 Which is a smart-home example? (a) a candle in a jar (b) a hand fan (c) a printed map (d) lights on from an app
7. 7.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 60 readings take?
8. 8.Which of these is an IoT device? (a) a plain table fan (b) a wind-up clock (c) a plain wall switch (d) a Wi-Fi weather station
9. 9.What does the phone app do? (a) stores data online (b) measures the real world (c) shows data to you (d) acts on a command
10. 10.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 10 minutes?
11. 11.Which of these is an IoT device? (a) a plain wall switch (b) an app-controlled bulb (c) a battery torch (d) a plain table fan
12. 12.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 1 minute?
13. 13.🌐 Is a fitness band with app an IoT device? (a) an IoT device (b) not an IoT device
14. 14.Which of these is an IoT device? (a) a wind-up clock (b) a paper calendar (c) a battery torch (d) a Wi-Fi doorbell camera
15. 15.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 6 hours?
16. 16.🌐 Is an app-controlled bulb an IoT device? (a) an IoT device (b) not an IoT device
17. 17.🔍 Which is the odd one out? (a) a plain table fan (b) a pencil sharpener (c) an app-controlled bulb (d) a plain wall switch
18. 18.🔍 Which is the odd one out? (a) a paper calendar (b) a Wi-Fi doorbell camera (c) an app-controlled bulb (d) a smart energy meter
19. 19.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “the sensor measures”? (a) the board reads it (b) the sensor measures
20. 20.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 5 hours?
21. 21.What does the cloud server do? (a) acts on a command (b) stores data online (c) measures the real world (d) shows data to you
22. 22.What does the Wi-Fi link do? (a) measures the real world (b) carries the data (c) stores data online (d) shows data to you
23. 23.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the sensor measures (b) it is sent by Wi-Fi (c) the board reads it (d) the app shows it
24. 24.🌐 In an IoT system, which part shows data to you? (a) phone app (b) microcontroller (c) Wi-Fi (d) cloud server
25. 25.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “it is sent by Wi-Fi”? (a) it is sent by Wi-Fi (b) the sensor measures
26. 26.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) it is sent by Wi-Fi (b) the sensor measures (c) the cloud stores it (d) the app shows it
27. 27.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 20 readings take?
28. 28.Which of these is not an IoT device? (a) a fitness band with app (b) a plain table fan (c) a Wi-Fi smart plug (d) an app-controlled bulb
29. 29.Which of these is not an IoT device? (a) an app-controlled bulb (b) a Wi-Fi smart plug (c) a Wi-Fi weather station (d) a battery torch
30. 30.Which of these is not an IoT device? (a) a fitness band with app (b) a Wi-Fi doorbell camera (c) a plain wall switch (d) a Wi-Fi smart plug
31. 31.What does the actuator do? (a) stores data online (b) acts on a command (c) reads values, decides (d) shows data to you
32. 32.🌐 Is a smart energy meter an IoT device? (a) not an IoT device (b) an IoT device
33. 33.🌐 In an IoT system, which part reads values, decides? (a) cloud server (b) microcontroller (c) sensor (d) Wi-Fi
34. 34.🌐 In an IoT system, which part measures the real world? (a) phone app (b) microcontroller (c) cloud server (d) sensor
35. 35.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 40 readings take?
36. 36.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 140 readings take?
37. 37.Which of these is an IoT device? (a) a pencil sharpener (b) a wind-up clock (c) a paper calendar (d) a Wi-Fi smart plug
38. 38.What does the microcontroller do? (a) shows data to you (b) stores data online (c) reads values, decides (d) carries the data
39. 39.Which of these is not an IoT device? (a) a paper calendar (b) an app-controlled bulb (c) a fitness band with app (d) a Wi-Fi doorbell camera
40. 40.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 140 readings take?

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