Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 280 · 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 comes first: “the app shows it” or “the cloud stores it”? (a) the app shows it (b) the cloud stores it
2. 2.What does the sensor do? (a) acts on a command (b) shows data to you (c) stores data online (d) measures the real world
3. 3.🔍 Which is the odd one out? (a) a plain table fan (b) a plain wall switch (c) a pencil sharpener (d) a smart energy meter
4. 4.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) the board reads it (b) the sensor measures (c) it is sent by Wi-Fi (d) the app shows it
5. 5.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 130 readings take?
6. 6.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) a Wi-Fi doorbell camera (c) a plain table fan (d) a smart energy meter
7. 7.Which of these is an IoT device? (a) a plain wall switch (b) a battery torch (c) a paper calendar (d) a Wi-Fi smart plug
8. 8.🔍 Which is the odd one out? (a) a plain table fan (b) a wind-up clock (c) a pencil sharpener (d) an app-controlled bulb
9. 9.🌐 What does IoT stand for? (a) Inside of Toys (b) Internet of Things (c) Input of Tools (d) Internet of Talk
10. 10.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 7 minutes?
11. 11.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) a wind-up clock (c) a smart energy meter (d) a fitness band with app
12. 12.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 8 minutes?
13. 13.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 180 readings take?
14. 14.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 5 hours?
15. 15.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) an app-controlled bulb (c) a Wi-Fi smart plug (d) a plain table fan
16. 16.What does the microcontroller do? (a) reads values, decides (b) acts on a command (c) carries the data (d) shows data to you
17. 17.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 100 readings take?
18. 18.🌐 Is a plain wall switch an IoT device? (a) an IoT device (b) not an IoT device
19. 19.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the cloud stores it (b) the app shows it (c) the board reads it (d) the sensor measures
20. 20.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 4 hours?
21. 21.Which of these is an IoT device? (a) a smart energy meter (b) a plain table fan (c) a wind-up clock (d) a paper calendar
22. 22.🌐 In an IoT system, which part stores data online? (a) Wi-Fi (b) cloud server (c) sensor (d) phone app
23. 23.🌐 Is a battery torch an IoT device? (a) an IoT device (b) not an IoT device
24. 24.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 130 readings take?
25. 25.🌐 In an IoT system, which part measures the real world? (a) phone app (b) microcontroller (c) actuator (d) sensor
26. 26.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) a fitness band with app (c) a paper calendar (d) a Wi-Fi weather station
27. 27.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 80 readings take?
28. 28.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 2 minutes?
29. 29.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) a pencil sharpener (c) an app-controlled bulb (d) a Wi-Fi doorbell camera
30. 30.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a Wi-Fi weather station (c) a Wi-Fi doorbell camera (d) a paper calendar
31. 31.🔢 To get a sensor reading onto a phone, which comes first: “the cloud stores it” or “the app shows it”? (a) the cloud stores it (b) the app shows it
32. 32.What does the Wi-Fi link do? (a) shows data to you (b) acts on a command (c) reads values, decides (d) carries the data
33. 33.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) an IoT device (b) not an IoT device
34. 34.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 1 hour?
35. 35.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 2 hours?
36. 36.Which of these is an IoT device? (a) a pencil sharpener (b) a battery torch (c) a plain wall switch (d) an app-controlled bulb
37. 37.🌐 Is an app-controlled bulb an IoT device? (a) an IoT device (b) not an IoT device
38. 38.🔢 To get a sensor reading onto a phone, what comes right after “it is sent by Wi-Fi”? (a) the sensor measures (b) the cloud stores it (c) the board reads it (d) the app shows it
39. 39.🌐 How does a home IoT device usually send its data to the app? (a) by post (b) through a candle (c) by shouting (d) over Wi-Fi
40. 40.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 170 readings take?

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