Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 499 · 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.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 60 readings take?
2. 2.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) it is sent by Wi-Fi (b) the app shows it (c) the sensor measures (d) the cloud stores it
3. 3.🌐 In an IoT system, which part carries the data? (a) phone app (b) microcontroller (c) sensor (d) Wi-Fi
4. 4.What does the sensor do? (a) stores data online (b) acts on a command (c) measures the real world (d) reads values, decides
5. 5.🔢 To get a sensor reading onto a phone, what comes right after “it is sent by Wi-Fi”? (a) the cloud stores it (b) the app shows it (c) the board reads it (d) the sensor measures
6. 6.🔍 Which is the odd one out? (a) a fitness band with app (b) a plain table fan (c) a battery torch (d) a wind-up clock
7. 7.🏠 Which is a smart-home example? (a) a candle in a jar (b) a printed map (c) a hand fan (d) lights on from an app
8. 8.🌐 In an IoT system, which part measures the real world? (a) sensor (b) Wi-Fi (c) actuator (d) cloud server
9. 9.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
10. 10.🔢 To get a sensor reading onto a phone, which comes first: “the cloud stores it” or “the app shows it”? (a) the app shows it (b) the cloud stores it
11. 11.Which of these is an IoT device? (a) a wind-up clock (b) a Wi-Fi smart plug (c) a pencil sharpener (d) a paper calendar
12. 12.🌐 Is a wind-up clock an IoT device? (a) not an IoT device (b) an IoT device
13. 13.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 170 readings take?
14. 14.Which of these is not an IoT device? (a) a smart energy meter (b) a fitness band with app (c) a battery torch (d) an app-controlled bulb
15. 15.What does the microcontroller do? (a) reads values, decides (b) acts on a command (c) measures the real world (d) carries the data
16. 16.🔍 Which is the odd one out? (a) a paper calendar (b) an app-controlled bulb (c) a plain wall switch (d) a plain table fan
17. 17.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 6 minutes?
18. 18.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) a fitness band with app (c) a plain wall switch (d) an app-controlled bulb
19. 19.🌐 In an IoT system, which part reads values, decides? (a) microcontroller (b) Wi-Fi (c) actuator (d) sensor
20. 20.Which of these is an IoT device? (a) a plain table fan (b) a battery torch (c) a smart energy meter (d) a paper calendar
21. 21.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the board reads it (b) the sensor measures (c) the app shows it (d) the cloud stores it
22. 22.🔍 Which is the odd one out? (a) a smart energy meter (b) a wind-up clock (c) a pencil sharpener (d) a paper calendar
23. 23.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 2 hours?
24. 24.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 8 minutes?
25. 25.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) it is sent by Wi-Fi (b) the cloud stores it (c) the app shows it (d) the board reads it
26. 26.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the app shows it”? (a) it is sent by Wi-Fi (b) the app shows it
27. 27.What does the Wi-Fi link do? (a) carries the data (b) stores data online (c) measures the real world (d) reads values, decides
28. 28.Which of these is an IoT device? (a) a plain table fan (b) a wind-up clock (c) an app-controlled bulb (d) a pencil sharpener
29. 29.What does the actuator do? (a) measures the real world (b) carries the data (c) stores data online (d) acts on a command
30. 30.What does the cloud server do? (a) carries the data (b) measures the real world (c) stores data online (d) reads values, decides
31. 31.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 3 hours?
32. 32.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 5 minutes?
33. 33.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 140 readings take?
34. 34.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 5 minutes?
35. 35.🌐 Is a Wi-Fi weather station an IoT device? (a) not an IoT device (b) an IoT device
36. 36.🌐 In an IoT system, which part stores data online? (a) actuator (b) sensor (c) Wi-Fi (d) cloud server
37. 37.🌐 Is a plain wall switch an IoT device? (a) an IoT device (b) not an IoT device
38. 38.🌐 In an IoT system, which part shows data to you? (a) cloud server (b) microcontroller (c) actuator (d) phone app
39. 39.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) a plain table fan (c) a Wi-Fi doorbell camera (d) a Wi-Fi weather station
40. 40.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 100 readings take?

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