Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 195 · 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 is the odd one out? (a) an app-controlled bulb (b) a Wi-Fi smart plug (c) a plain table fan (d) a fitness band with app
2. 2.🌐 In an IoT system, which part acts on a command? (a) actuator (b) sensor (c) cloud server (d) phone app
3. 3.What does the actuator do? (a) reads values, decides (b) measures the real world (c) acts on a command (d) shows data to you
4. 4.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “the board reads it”? (a) the board reads it (b) the app shows it
5. 5.What does the cloud server do? (a) stores data online (b) carries the data (c) acts on a command (d) shows data to you
6. 6.🏠 Which is a smart-home example? (a) lights on from an app (b) a printed map (c) a hand fan (d) a candle in a jar
7. 7.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 2 minutes?
8. 8.🌐 Is a fitness band with app an IoT device? (a) not an IoT device (b) an IoT device
9. 9.🌐 In an IoT system, which part shows data to you? (a) microcontroller (b) cloud server (c) phone app (d) actuator
10. 10.🔍 Which is the odd one out? (a) a plain wall switch (b) an app-controlled bulb (c) a plain table fan (d) a battery torch
11. 11.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 2 hours?
12. 12.Which of these is an IoT device? (a) a wind-up clock (b) a plain table fan (c) a Wi-Fi weather station (d) a paper calendar
13. 13.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) an app-controlled bulb (c) a fitness band with app (d) a battery torch
14. 14.🌐 In an IoT system, which part stores data online? (a) sensor (b) Wi-Fi (c) cloud server (d) microcontroller
15. 15.What does the microcontroller do? (a) reads values, decides (b) measures the real world (c) stores data online (d) carries the data
16. 16.🌐 Is a plain table fan an IoT device? (a) an IoT device (b) not an IoT device
17. 17.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 4 hours?
18. 18.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 4 hours?
19. 19.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 7 minutes?
20. 20.🔢 To get a sensor reading onto a phone, which comes first: “the cloud stores it” or “it is sent by Wi-Fi”? (a) it is sent by Wi-Fi (b) the cloud stores it
21. 21.🌐 In an IoT system, which part carries the data? (a) cloud server (b) phone app (c) microcontroller (d) Wi-Fi
22. 22.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) it is sent by Wi-Fi (b) the app shows it (c) the board reads it (d) the cloud stores it
23. 23.Which of these is an IoT device? (a) a Wi-Fi smart plug (b) a plain table fan (c) a battery torch (d) a paper calendar
24. 24.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the app shows it (b) the sensor measures (c) the cloud stores it (d) the board reads it
25. 25.What does the sensor do? (a) reads values, decides (b) acts on a command (c) shows data to you (d) measures the real world
26. 26.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 7 minutes?
27. 27.🌐 Is a Wi-Fi weather station an IoT device? (a) an IoT device (b) not an IoT device
28. 28.Which of these is not an IoT device? (a) a paper calendar (b) a Wi-Fi weather station (c) a fitness band with app (d) a Wi-Fi smart plug
29. 29.🌐 Is a Wi-Fi smart plug an IoT device? (a) not an IoT device (b) an IoT device
30. 30.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 1 minute?
31. 31.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) the app shows it (b) the board reads it (c) the sensor measures (d) it is sent by Wi-Fi
32. 32.🌐 Is a smart energy meter an IoT device? (a) not an IoT device (b) an IoT device
33. 33.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the app shows it”? (a) the app shows it (b) the sensor measures
34. 34.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 80 readings take?
35. 35.🌐 In an IoT system, which part measures the real world? (a) actuator (b) microcontroller (c) cloud server (d) sensor
36. 36.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 9 minutes?
37. 37.Which of these is an IoT device? (a) a paper calendar (b) a smart energy meter (c) a battery torch (d) a plain table fan
38. 38.What does the Wi-Fi link do? (a) shows data to you (b) measures the real world (c) reads values, decides (d) carries the data
39. 39.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 160 readings take?
40. 40.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 2 minutes?

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