Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 189 · 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 an IoT device? (a) a smart energy meter (b) a plain wall switch (c) a pencil sharpener (d) a battery torch
2. 2.What does the phone app do? (a) stores data online (b) reads values, decides (c) shows data to you (d) measures the real world
3. 3.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “the board reads it”? (a) the app shows it (b) the board reads it
4. 4.Which of these is not an IoT device? (a) a paper calendar (b) a fitness band with app (c) a smart energy meter (d) a Wi-Fi doorbell camera
5. 5.🌐 Is a paper calendar an IoT device? (a) not an IoT device (b) an IoT device
6. 6.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 4 minutes?
7. 7.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 3 hours?
8. 8.🌐 What does IoT stand for? (a) Internet of Talk (b) Internet of Things (c) Input of Tools (d) Inside of Toys
9. 9.What does the actuator do? (a) acts on a command (b) carries the data (c) reads values, decides (d) measures the real world
10. 10.🔍 Which is the odd one out? (a) a plain wall switch (b) a wind-up clock (c) a plain table fan (d) a Wi-Fi doorbell camera
11. 11.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 3 hours?
12. 12.🌐 In an IoT system, which part reads values, decides? (a) Wi-Fi (b) sensor (c) microcontroller (d) cloud server
13. 13.What does the microcontroller do? (a) carries the data (b) stores data online (c) acts on a command (d) reads values, decides
14. 14.What does the cloud server do? (a) acts on a command (b) measures the real world (c) stores data online (d) reads values, decides
15. 15.Which of these is an IoT device? (a) a battery torch (b) a plain wall switch (c) a paper calendar (d) a Wi-Fi weather station
16. 16.🔢 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
17. 17.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) a plain wall switch (c) a Wi-Fi doorbell camera (d) a smart energy meter
18. 18.🔢 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 cloud stores it (c) the sensor measures (d) the board reads it
19. 19.🔢 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
20. 20.🌐 Is a plain wall switch an IoT device? (a) an IoT device (b) not an IoT device
21. 21.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 40 readings take?
22. 22.🔢 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
23. 23.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 50 readings take?
24. 24.🌐 In an IoT system, which part acts on a command? (a) phone app (b) Wi-Fi (c) cloud server (d) actuator
25. 25.🌐 Is a wind-up clock an IoT device? (a) an IoT device (b) not an IoT device
26. 26.🔍 Which is the odd one out? (a) a plain table fan (b) a paper calendar (c) a pencil sharpener (d) a Wi-Fi smart plug
27. 27.🏠 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
28. 28.🌐 How does a home IoT device usually send its data to the app? (a) by post (b) by shouting (c) through a candle (d) over Wi-Fi
29. 29.Which of these is an IoT device? (a) a battery torch (b) a pencil sharpener (c) a Wi-Fi smart plug (d) a paper calendar
30. 30.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) not an IoT device (b) an IoT device
31. 31.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 30 readings take?
32. 32.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 30 readings take?
33. 33.🌐 In an IoT system, which part measures the real world? (a) actuator (b) sensor (c) Wi-Fi (d) phone app
34. 34.🌐 In an IoT system, which part carries the data? (a) sensor (b) microcontroller (c) phone app (d) Wi-Fi
35. 35.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 3 minutes?
36. 36.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 1 minute?
37. 37.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) a pencil sharpener (c) a smart energy meter (d) a Wi-Fi doorbell camera
38. 38.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 70 readings take?
39. 39.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) a fitness band with app (c) a Wi-Fi doorbell camera (d) a battery torch
40. 40.🔍 Which is the odd one out? (a) a wind-up clock (b) a Wi-Fi weather station (c) a paper calendar (d) a pencil sharpener

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