Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 28 · 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.🌐 In an IoT system, which part carries the data? (a) sensor (b) microcontroller (c) actuator (d) Wi-Fi
2. 2.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 4 minutes?
3. 3.🔍 Which is the odd one out? (a) a plain wall switch (b) a wind-up clock (c) a pencil sharpener (d) an app-controlled bulb
4. 4.What does the sensor do? (a) measures the real world (b) stores data online (c) acts on a command (d) reads values, decides
5. 5.🌐 What does IoT stand for? (a) Internet of Things (b) Inside of Toys (c) Internet of Talk (d) Input of Tools
6. 6.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “the sensor measures”? (a) the board reads it (b) the sensor measures
7. 7.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a fitness band with app (c) a plain table fan (d) a Wi-Fi weather station
8. 8.🔢 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
9. 9.🌐 In an IoT system, which part reads values, decides? (a) Wi-Fi (b) microcontroller (c) actuator (d) cloud server
10. 10.🌐 In an IoT system, which part shows data to you? (a) sensor (b) Wi-Fi (c) phone app (d) actuator
11. 11.What does the Wi-Fi link do? (a) stores data online (b) carries the data (c) measures the real world (d) reads values, decides
12. 12.🌐 In an IoT system, which part acts on a command? (a) cloud server (b) phone app (c) sensor (d) actuator
13. 13.Which of these is an IoT device? (a) an app-controlled bulb (b) a battery torch (c) a paper calendar (d) a pencil sharpener
14. 14.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 170 readings take?
15. 15.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 160 readings take?
16. 16.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 4 hours?
17. 17.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 4 minutes?
18. 18.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 8 minutes?
19. 19.🏠 Which is a smart-home example? (a) a printed map (b) lights on from an app (c) a hand fan (d) a candle in a jar
20. 20.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 10 minutes?
21. 21.🌐 Is a plain wall switch an IoT device? (a) not an IoT device (b) an IoT device
22. 22.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a wind-up clock (c) an app-controlled bulb (d) a fitness band with app
23. 23.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) the app shows it (b) the cloud stores it (c) it is sent by Wi-Fi (d) the sensor measures
24. 24.Which of these is not an IoT device? (a) an app-controlled bulb (b) a plain wall switch (c) a smart energy meter (d) a fitness band with app
25. 25.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the board reads it”? (a) it is sent by Wi-Fi (b) the board reads it
26. 26.🌐 Is a fitness band with app an IoT device? (a) not an IoT device (b) an IoT device
27. 27.Which of these is not an IoT device? (a) a fitness band with app (b) an app-controlled bulb (c) a pencil sharpener (d) a Wi-Fi weather station
28. 28.🌐 Is a battery torch an IoT device? (a) not an IoT device (b) an IoT device
29. 29.Which of these is an IoT device? (a) a battery torch (b) a plain table fan (c) a paper calendar (d) a fitness band with app
30. 30.🔢 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) the sensor measures (d) it is sent by Wi-Fi
31. 31.🔍 Which is the odd one out? (a) a Wi-Fi weather station (b) a fitness band with app (c) a pencil sharpener (d) a Wi-Fi smart plug
32. 32.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 5 hours?
33. 33.🌐 In an IoT system, which part stores data online? (a) cloud server (b) Wi-Fi (c) microcontroller (d) actuator
34. 34.🌐 How does a home IoT device usually send its data to the app? (a) by post (b) over Wi-Fi (c) by shouting (d) through a candle
35. 35.What does the actuator do? (a) reads values, decides (b) acts on a command (c) stores data online (d) measures the real world
36. 36.🔢 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
37. 37.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 50 readings take?
38. 38.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “the cloud stores it”? (a) the cloud stores it (b) the board reads it
39. 39.🔢 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 sensor measures (c) the cloud stores it (d) the board reads it
40. 40.What does the cloud server do? (a) measures the real world (b) reads values, decides (c) shows data to you (d) stores data online

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