Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 202 · 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.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) an IoT device (b) not an IoT device
2. 2.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 1 hour?
3. 3.🏠 Which is a smart-home example? (a) a candle in a jar (b) a printed map (c) lights on from an app (d) a hand fan
4. 4.🌐 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
5. 5.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a Wi-Fi smart plug (c) a battery torch (d) a Wi-Fi weather station
6. 6.🌐 What does IoT stand for? (a) Internet of Talk (b) Inside of Toys (c) Input of Tools (d) Internet of Things
7. 7.🔍 Which is the odd one out? (a) a paper calendar (b) a plain table fan (c) a smart energy meter (d) a wind-up clock
8. 8.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) the app shows it (b) it is sent by Wi-Fi (c) the cloud stores it (d) the board reads it
9. 9.Which of these is not an IoT device? (a) an app-controlled bulb (b) a Wi-Fi doorbell camera (c) a battery torch (d) a Wi-Fi smart plug
10. 10.🌐 Is a Wi-Fi weather station an IoT device? (a) an IoT device (b) not an IoT device
11. 11.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 2 hours?
12. 12.🔍 Which is the odd one out? (a) a pencil sharpener (b) a wind-up clock (c) a fitness band with app (d) a plain wall switch
13. 13.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 5 hours?
14. 14.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a smart energy meter (c) an app-controlled bulb (d) a wind-up clock
15. 15.Which of these is not an IoT device? (a) an app-controlled bulb (b) a Wi-Fi smart plug (c) a Wi-Fi doorbell camera (d) a wind-up clock
16. 16.What does the sensor do? (a) acts on a command (b) reads values, decides (c) measures the real world (d) shows data to you
17. 17.🌐 In an IoT system, which part carries the data? (a) Wi-Fi (b) actuator (c) microcontroller (d) phone app
18. 18.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 3 hours?
19. 19.🌐 Is a fitness band with app an IoT device? (a) not an IoT device (b) an IoT device
20. 20.🌐 In an IoT system, which part reads values, decides? (a) sensor (b) actuator (c) Wi-Fi (d) microcontroller
21. 21.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 6 minutes?
22. 22.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) it is sent by Wi-Fi (b) the board reads it (c) the app shows it (d) the sensor measures
23. 23.🌐 In an IoT system, which part stores data online? (a) actuator (b) microcontroller (c) phone app (d) cloud server
24. 24.🌐 In an IoT system, which part acts on a command? (a) Wi-Fi (b) phone app (c) sensor (d) actuator
25. 25.Which of these is an IoT device? (a) a pencil sharpener (b) a battery torch (c) a wind-up clock (d) a Wi-Fi weather station
26. 26.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 6 minutes?
27. 27.What does the Wi-Fi link do? (a) acts on a command (b) carries the data (c) reads values, decides (d) stores data online
28. 28.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 80 readings take?
29. 29.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 9 minutes?
30. 30.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 4 minutes?
31. 31.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 120 readings take?
32. 32.Which of these is an IoT device? (a) a fitness band with app (b) a pencil sharpener (c) a plain wall switch (d) a wind-up clock
33. 33.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “it is sent by Wi-Fi”? (a) the board reads it (b) it is sent by Wi-Fi
34. 34.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) a smart energy meter (c) an app-controlled bulb (d) a plain wall switch
35. 35.🌐 Is a pencil sharpener an IoT device? (a) not an IoT device (b) an IoT device
36. 36.🔢 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
37. 37.🌐 In an IoT system, which part measures the real world? (a) microcontroller (b) cloud server (c) actuator (d) sensor
38. 38.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 5 hours?
39. 39.🔢 To get a sensor reading onto a phone, what comes right after “it is sent by Wi-Fi”? (a) the sensor measures (b) the app shows it (c) the board reads it (d) the cloud stores it
40. 40.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 170 readings take?

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