Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 299 · 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, what comes right after “it is sent by Wi-Fi”? (a) the cloud stores it (b) the board reads it (c) the sensor measures (d) the app shows it
2. 2.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 3 hours?
3. 3.🌐 In an IoT system, which part reads values, decides? (a) cloud server (b) microcontroller (c) actuator (d) sensor
4. 4.🔍 Which is the odd one out? (a) a paper calendar (b) a battery torch (c) an app-controlled bulb (d) a wind-up clock
5. 5.Which of these is an IoT device? (a) a plain wall switch (b) a pencil sharpener (c) a plain table fan (d) a fitness band with app
6. 6.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 40 readings take?
7. 7.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 60 readings take?
8. 8.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the cloud stores it (b) the app shows it (c) the board reads it (d) the sensor measures
9. 9.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 5 minutes?
10. 10.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 120 readings take?
11. 11.What does the Wi-Fi link do? (a) stores data online (b) carries the data (c) acts on a command (d) reads values, decides
12. 12.🌐 In an IoT system, which part shows data to you? (a) phone app (b) cloud server (c) actuator (d) sensor
13. 13.🔢 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
14. 14.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) the board reads it (b) the app shows it (c) it is sent by Wi-Fi (d) the sensor measures
15. 15.🌐 In an IoT system, which part acts on a command? (a) phone app (b) cloud server (c) sensor (d) actuator
16. 16.What does the sensor do? (a) acts on a command (b) carries the data (c) measures the real world (d) reads values, decides
17. 17.What does the cloud server do? (a) carries the data (b) acts on a command (c) stores data online (d) measures the real world
18. 18.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 1 hour?
19. 19.Which of these is an IoT device? (a) a plain table fan (b) a Wi-Fi smart plug (c) a plain wall switch (d) a battery torch
20. 20.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 4 hours?
21. 21.🔍 Which is the odd one out? (a) a fitness band with app (b) a wind-up clock (c) a paper calendar (d) a plain wall switch
22. 22.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the cloud stores it (b) the board reads it (c) it is sent by Wi-Fi (d) the app shows it
23. 23.🏠 Which is a smart-home example? (a) lights on from an app (b) a printed map (c) a candle in a jar (d) a hand fan
24. 24.🔢 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
25. 25.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 1 minute?
26. 26.What does the microcontroller do? (a) measures the real world (b) reads values, decides (c) carries the data (d) shows data to you
27. 27.Which of these is not an IoT device? (a) a smart energy meter (b) a Wi-Fi weather station (c) a battery torch (d) a Wi-Fi doorbell camera
28. 28.Which of these is an IoT device? (a) a paper calendar (b) a Wi-Fi doorbell camera (c) a wind-up clock (d) a plain table fan
29. 29.🌐 Is a paper calendar an IoT device? (a) not an IoT device (b) an IoT device
30. 30.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 3 hours?
31. 31.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 3 minutes?
32. 32.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 5 hours?
33. 33.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 4 hours?
34. 34.🌐 Is a plain wall switch an IoT device? (a) an IoT device (b) not an IoT device
35. 35.🌐 In an IoT system, which part measures the real world? (a) microcontroller (b) cloud server (c) sensor (d) actuator
36. 36.🌐 Is a pencil sharpener an IoT device? (a) not an IoT device (b) an IoT device
37. 37.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 8 minutes?
38. 38.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 2 hours?
39. 39.🔍 Which is the odd one out? (a) a pencil sharpener (b) a wind-up clock (c) a paper calendar (d) a Wi-Fi doorbell camera
40. 40.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 5 hours?

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