Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 345 · 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 plain table fan (b) a fitness band with app (c) a battery torch (d) a pencil sharpener
2. 2.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 100 readings take?
3. 3.🔍 Which is the odd one out? (a) a plain table fan (b) a paper calendar (c) a Wi-Fi doorbell camera (d) a plain wall switch
4. 4.What does the microcontroller do? (a) stores data online (b) acts on a command (c) reads values, decides (d) measures the real world
5. 5.🌐 What does IoT stand for? (a) Internet of Things (b) Internet of Talk (c) Input of Tools (d) Inside of Toys
6. 6.🌐 In an IoT system, which part reads values, decides? (a) sensor (b) microcontroller (c) cloud server (d) Wi-Fi
7. 7.🌐 Is a paper calendar an IoT device? (a) not an IoT device (b) an IoT device
8. 8.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the cloud stores it”? (a) the cloud stores it (b) it is sent by Wi-Fi
9. 9.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 120 readings take?
10. 10.🏠 Which is a smart-home example? (a) lights on from an app (b) a candle in a jar (c) a printed map (d) a hand fan
11. 11.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 1 hour?
12. 12.What does the phone app do? (a) stores data online (b) shows data to you (c) reads values, decides (d) measures the real world
13. 13.🌐 Is a Wi-Fi smart plug an IoT device? (a) not an IoT device (b) an IoT device
14. 14.🌐 In an IoT system, which part stores data online? (a) cloud server (b) actuator (c) microcontroller (d) sensor
15. 15.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the cloud stores it”? (a) the sensor measures (b) the cloud stores it
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 wind-up clock (c) a plain wall switch (d) a Wi-Fi weather station
18. 18.Which of these is an IoT device? (a) a pencil sharpener (b) a wind-up clock (c) a plain wall switch (d) a Wi-Fi doorbell camera
19. 19.What does the sensor do? (a) stores data online (b) carries the data (c) measures the real world (d) reads values, decides
20. 20.🌐 Is a smart energy meter an IoT device? (a) not an IoT device (b) an IoT device
21. 21.🌐 How does a home IoT device usually send its data to the app? (a) by post (b) over Wi-Fi (c) by shouting (d) through a candle
22. 22.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) a Wi-Fi doorbell camera (c) a pencil sharpener (d) a Wi-Fi smart plug
23. 23.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 150 readings take?
24. 24.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 2 minutes?
25. 25.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 3 minutes?
26. 26.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 130 readings take?
27. 27.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 9 minutes?
28. 28.🌐 In an IoT system, which part measures the real world? (a) microcontroller (b) actuator (c) Wi-Fi (d) sensor
29. 29.🌐 Is a Wi-Fi weather station an IoT device? (a) an IoT device (b) not an IoT device
30. 30.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 4 hours?
31. 31.Which of these is an IoT device? (a) a battery torch (b) a Wi-Fi smart plug (c) a plain table fan (d) a pencil sharpener
32. 32.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 1 hour?
33. 33.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 2 hours?
34. 34.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the sensor measures (b) the board reads it (c) it is sent by Wi-Fi (d) the app shows it
35. 35.Which of these is an IoT device? (a) a battery torch (b) a wind-up clock (c) an app-controlled bulb (d) a paper calendar
36. 36.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) a Wi-Fi smart plug (c) a battery torch (d) a Wi-Fi weather station
37. 37.Which of these is an IoT device? (a) a smart energy meter (b) a plain wall switch (c) a battery torch (d) a paper calendar
38. 38.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the board reads it”? (a) the board reads it (b) the sensor measures
39. 39.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 1 minute?
40. 40.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 6 hours?

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