Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 720 · 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 not an IoT device? (a) an app-controlled bulb (b) a Wi-Fi weather station (c) a plain table fan (d) a fitness band with app
2. 2.🏠 Which is a smart-home example? (a) a candle in a jar (b) lights on from an app (c) a printed map (d) a hand fan
3. 3.Which of these is an IoT device? (a) a wind-up clock (b) an app-controlled bulb (c) a plain wall switch (d) a paper calendar
4. 4.Which of these is not an IoT device? (a) a fitness band with app (b) a Wi-Fi smart plug (c) a paper calendar (d) a Wi-Fi doorbell camera
5. 5.What does the sensor do? (a) measures the real world (b) carries the data (c) stores data online (d) shows data to you
6. 6.🌐 How does a home IoT device usually send its data to the app? (a) over Wi-Fi (b) through a candle (c) by post (d) by shouting
7. 7.🔍 Which is the odd one out? (a) a wind-up clock (b) a plain table fan (c) a pencil sharpener (d) a Wi-Fi smart plug
8. 8.🌐 Is a paper calendar an IoT device? (a) not an IoT device (b) an IoT device
9. 9.🔍 Which is the odd one out? (a) a wind-up clock (b) a battery torch (c) a pencil sharpener (d) a Wi-Fi doorbell camera
10. 10.Which of these is an IoT device? (a) a pencil sharpener (b) a Wi-Fi doorbell camera (c) a wind-up clock (d) a paper calendar
11. 11.🔢 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) it is sent by Wi-Fi
12. 12.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a battery torch (c) a fitness band with app (d) a Wi-Fi weather station
13. 13.🔢 To get a sensor reading onto a phone, which comes first: “the cloud stores it” or “the board reads it”? (a) the board reads it (b) the cloud stores it
14. 14.🌐 In an IoT system, which part carries the data? (a) Wi-Fi (b) phone app (c) cloud server (d) actuator
15. 15.🌐 Is a fitness band with app an IoT device? (a) not an IoT device (b) an IoT device
16. 16.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a plain wall switch (c) a battery torch (d) a wind-up clock
17. 17.What does the phone app do? (a) carries the data (b) reads values, decides (c) acts on a command (d) shows data to you
18. 18.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 50 readings take?
19. 19.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “the app shows it”? (a) the board reads it (b) the app shows it
20. 20.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 4 minutes?
21. 21.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 1 hour?
22. 22.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 3 minutes?
23. 23.🌐 Is a plain table fan an IoT device? (a) not an IoT device (b) an IoT device
24. 24.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 4 hours?
25. 25.🔍 Which is the odd one out? (a) a wind-up clock (b) a paper calendar (c) a pencil sharpener (d) a fitness band with app
26. 26.🔢 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
27. 27.🌐 In an IoT system, which part shows data to you? (a) microcontroller (b) phone app (c) actuator (d) Wi-Fi
28. 28.🔢 To get a sensor reading onto a phone, what comes right after “it is sent by Wi-Fi”? (a) the app shows it (b) the sensor measures (c) the board reads it (d) the cloud stores it
29. 29.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 140 readings take?
30. 30.Which of these is not an IoT device? (a) an app-controlled bulb (b) a smart energy meter (c) a fitness band with app (d) a pencil sharpener
31. 31.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 90 readings take?
32. 32.What does the microcontroller do? (a) carries the data (b) stores data online (c) reads values, decides (d) measures the real world
33. 33.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 1 hour?
34. 34.🌐 In an IoT system, which part stores data online? (a) sensor (b) phone app (c) microcontroller (d) cloud server
35. 35.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 1 minute?
36. 36.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 90 readings take?
37. 37.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 7 minutes?
38. 38.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the board reads it (b) the cloud stores it (c) it is sent by Wi-Fi (d) the sensor measures
39. 39.🌐 Is a battery torch an IoT device? (a) not an IoT device (b) an IoT device
40. 40.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 10 minutes?

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