Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 54 · 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 paper calendar (b) a Wi-Fi smart plug (c) a plain wall switch (d) a battery torch
2. 2.🌐 How does a home IoT device usually send its data to the app? (a) by post (b) by shouting (c) through a candle (d) over Wi-Fi
3. 3.🌐 What does IoT stand for? (a) Internet of Talk (b) Inside of Toys (c) Internet of Things (d) Input of Tools
4. 4.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 190 readings take?
5. 5.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) an app-controlled bulb (c) a Wi-Fi weather station (d) a paper calendar
6. 6.🌐 Is an app-controlled bulb an IoT device? (a) not an IoT device (b) an IoT device
7. 7.What does the Wi-Fi link do? (a) shows data to you (b) carries the data (c) stores data online (d) reads values, decides
8. 8.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the board reads it”? (a) the board reads it (b) it is sent by Wi-Fi
9. 9.🌐 Is a paper calendar an IoT device? (a) not an IoT device (b) an IoT device
10. 10.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 7 minutes?
11. 11.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 50 readings take?
12. 12.What does the actuator do? (a) stores data online (b) measures the real world (c) shows data to you (d) acts on a command
13. 13.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 110 readings take?
14. 14.🔍 Which is the odd one out? (a) a paper calendar (b) a wind-up clock (c) a plain wall switch (d) an app-controlled bulb
15. 15.🔍 Which is the odd one out? (a) a plain table fan (b) a Wi-Fi weather station (c) a paper calendar (d) a plain wall switch
16. 16.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) a battery torch (c) a Wi-Fi smart plug (d) a Wi-Fi doorbell camera
17. 17.🌐 In an IoT system, which part shows data to you? (a) actuator (b) cloud server (c) phone app (d) Wi-Fi
18. 18.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
19. 19.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 100 readings take?
20. 20.What does the microcontroller do? (a) carries the data (b) reads values, decides (c) measures the real world (d) stores data online
21. 21.🏠 Which is a smart-home example? (a) lights on from an app (b) a printed map (c) a candle in a jar (d) a hand fan
22. 22.🌐 In an IoT system, which part stores data online? (a) microcontroller (b) actuator (c) cloud server (d) sensor
23. 23.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 1 hour?
24. 24.🔍 Which is the odd one out? (a) a pencil sharpener (b) a battery torch (c) a Wi-Fi doorbell camera (d) a wind-up clock
25. 25.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) the app shows it (b) the sensor measures (c) it is sent by Wi-Fi (d) the cloud stores it
26. 26.What does the cloud server do? (a) measures the real world (b) acts on a command (c) stores data online (d) shows data to you
27. 27.🌐 In an IoT system, which part acts on a command? (a) cloud server (b) sensor (c) Wi-Fi (d) actuator
28. 28.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) not an IoT device (b) an IoT device
29. 29.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 20 readings take?
30. 30.What does the phone app do? (a) carries the data (b) shows data to you (c) stores data online (d) acts on a command
31. 31.🔍 Which is the odd one out? (a) a plain wall switch (b) a paper calendar (c) a Wi-Fi smart plug (d) a plain table fan
32. 32.🌐 Is a smart energy meter an IoT device? (a) not an IoT device (b) an IoT device
33. 33.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 6 minutes?
34. 34.🔢 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
35. 35.Which of these is an IoT device? (a) a plain wall switch (b) a plain table fan (c) a paper calendar (d) a smart energy meter
36. 36.🔢 To get a sensor reading onto a phone, which comes first: “the cloud stores it” or “the app shows it”? (a) the cloud stores it (b) the app shows it
37. 37.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 1 hour?
38. 38.🔍 Which is the odd one out? (a) a fitness band with app (b) a battery torch (c) a plain table fan (d) a plain wall switch
39. 39.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 1 hour?
40. 40.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 100 readings take?

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