Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 951 · 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.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) it is sent by Wi-Fi (b) the sensor measures (c) the app shows it (d) the board reads it
2. 2.Which of these is not an IoT device? (a) a paper calendar (b) a smart energy meter (c) a fitness band with app (d) an app-controlled bulb
3. 3.🔍 Which is the odd one out? (a) a plain wall switch (b) an app-controlled bulb (c) a Wi-Fi doorbell camera (d) a Wi-Fi weather station
4. 4.🌐 Is a battery torch an IoT device? (a) an IoT device (b) not an IoT device
5. 5.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 160 readings take?
6. 6.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) it is sent by Wi-Fi (b) the sensor measures (c) the board reads it (d) the app shows it
7. 7.🔍 Which is the odd one out? (a) a battery torch (b) a pencil sharpener (c) a Wi-Fi smart plug (d) a plain wall switch
8. 8.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 6 hours?
9. 9.🔢 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
10. 10.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a Wi-Fi doorbell camera (c) a wind-up clock (d) a Wi-Fi weather station
11. 11.🔍 Which is the odd one out? (a) a plain wall switch (b) a plain table fan (c) a battery torch (d) a Wi-Fi doorbell camera
12. 12.🔢 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) the app shows it (d) it is sent by Wi-Fi
13. 13.🌐 Is a wind-up clock an IoT device? (a) not an IoT device (b) an IoT device
14. 14.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) a Wi-Fi doorbell camera (c) a plain table fan (d) a Wi-Fi smart plug
15. 15.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) an IoT device (b) not an IoT device
16. 16.🌐 How does a home IoT device usually send its data to the app? (a) by shouting (b) through a candle (c) over Wi-Fi (d) by post
17. 17.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “it is sent by Wi-Fi”? (a) the app shows it (b) it is sent by Wi-Fi
18. 18.🏠 Which is a smart-home example? (a) a hand fan (b) lights on from an app (c) a candle in a jar (d) a printed map
19. 19.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 190 readings take?
20. 20.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the cloud stores it”? (a) the cloud stores it (b) the sensor measures
21. 21.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 1 hour?
22. 22.What does the actuator do? (a) reads values, decides (b) stores data online (c) measures the real world (d) acts on a command
23. 23.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 5 hours?
24. 24.What does the Wi-Fi link do? (a) carries the data (b) stores data online (c) measures the real world (d) shows data to you
25. 25.🔍 Which is the odd one out? (a) a battery torch (b) an app-controlled bulb (c) a plain wall switch (d) a wind-up clock
26. 26.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 9 minutes?
27. 27.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 6 hours?
28. 28.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 3 hours?
29. 29.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 1 hour?
30. 30.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 40 readings take?
31. 31.🔍 Which is the odd one out? (a) a smart energy meter (b) an app-controlled bulb (c) a battery torch (d) a fitness band with app
32. 32.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 160 readings take?
33. 33.Which of these is not an IoT device? (a) an app-controlled bulb (b) a fitness band with app (c) a Wi-Fi smart plug (d) a pencil sharpener
34. 34.🌐 Is a fitness band with app an IoT device? (a) not an IoT device (b) an IoT device
35. 35.🌐 In an IoT system, which part reads values, decides? (a) microcontroller (b) Wi-Fi (c) sensor (d) cloud server
36. 36.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 7 minutes?
37. 37.What does the cloud server do? (a) carries the data (b) reads values, decides (c) shows data to you (d) stores data online
38. 38.Which of these is an IoT device? (a) a plain table fan (b) a pencil sharpener (c) a plain wall switch (d) an app-controlled bulb
39. 39.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 1 hour?
40. 40.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 20 readings take?

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