Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 422 · 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.Which of these is an IoT device? (a) a wind-up clock (b) a plain table fan (c) a Wi-Fi smart plug (d) a paper calendar
2. 2.🔢 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
3. 3.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a pencil sharpener (c) a battery torch (d) a paper calendar
4. 4.🌐 Is a fitness band with app an IoT device? (a) an IoT device (b) not an IoT device
5. 5.🌐 In an IoT system, which part shows data to you? (a) sensor (b) phone app (c) microcontroller (d) cloud server
6. 6.🌐 In an IoT system, which part carries the data? (a) actuator (b) microcontroller (c) Wi-Fi (d) sensor
7. 7.Which of these is an IoT device? (a) a battery torch (b) a plain wall switch (c) a Wi-Fi weather station (d) a pencil sharpener
8. 8.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a Wi-Fi smart plug (c) a Wi-Fi doorbell camera (d) a wind-up clock
9. 9.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) a wind-up clock (c) a fitness band with app (d) a Wi-Fi weather station
10. 10.🔢 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
11. 11.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 1 hour?
12. 12.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the sensor measures”? (a) it is sent by Wi-Fi (b) the sensor measures
13. 13.🔍 Which is the odd one out? (a) a plain table fan (b) a wind-up clock (c) a fitness band with app (d) a plain wall switch
14. 14.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 1 minute?
15. 15.🔍 Which is the odd one out? (a) a smart energy meter (b) an app-controlled bulb (c) a Wi-Fi smart plug (d) a plain table fan
16. 16.What does the actuator do? (a) acts on a command (b) measures the real world (c) reads values, decides (d) stores data online
17. 17.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 30 readings take?
18. 18.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 160 readings take?
19. 19.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 30 readings take?
20. 20.What does the cloud server do? (a) carries the data (b) stores data online (c) shows data to you (d) measures the real world
21. 21.🌐 What does IoT stand for? (a) Input of Tools (b) Internet of Talk (c) Internet of Things (d) Inside of Toys
22. 22.Which of these is not an IoT device? (a) an app-controlled bulb (b) a battery torch (c) a Wi-Fi smart plug (d) a Wi-Fi weather station
23. 23.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 4 hours?
24. 24.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 7 minutes?
25. 25.Which of these is an IoT device? (a) an app-controlled bulb (b) a plain wall switch (c) a paper calendar (d) a wind-up clock
26. 26.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the sensor measures (b) the board reads it (c) the app shows it (d) the cloud stores it
27. 27.🌐 Is a pencil sharpener an IoT device? (a) not an IoT device (b) an IoT device
28. 28.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 plain table fan
29. 29.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) the cloud stores it (b) the sensor measures (c) it is sent by Wi-Fi (d) the app shows it
30. 30.What does the microcontroller do? (a) reads values, decides (b) stores data online (c) shows data to you (d) acts on a command
31. 31.🌐 Is a paper calendar an IoT device? (a) not an IoT device (b) an IoT device
32. 32.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) an app-controlled bulb (c) a paper calendar (d) a smart energy meter
33. 33.🏠 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
34. 34.🔢 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
35. 35.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 130 readings take?
36. 36.🌐 In an IoT system, which part measures the real world? (a) microcontroller (b) cloud server (c) sensor (d) phone app
37. 37.What does the Wi-Fi link do? (a) shows data to you (b) stores data online (c) reads values, decides (d) carries the data
38. 38.🌐 Is a Wi-Fi smart plug an IoT device? (a) an IoT device (b) not an IoT device
39. 39.🌐 How does a home IoT device usually send its data to the app? (a) by shouting (b) by post (c) through a candle (d) over Wi-Fi
40. 40.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 130 readings take?

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