Week 20 Quiz

Wireless Communication and Remote Control

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Quiz Questions

1. What is wireless communication?

A) Sending information between devices using physical wires B) Sending information between devices using invisible signals through the air C) A type of battery for powering robots D) A method for charging devices without plugging them in

2. Which wireless technology typically has the longest range?

A) Bluetooth (30 feet) B) Infrared (line of sight only) C) WiFi (100+ feet) D) Radio waves (very far)

3. What is the main advantage of Bluetooth for robot control?

A) It requires internet connection B) It's easy to pair with smartphones and doesn't need internet C) It has unlimited range D) It only works with computers

4. In the Arduino Bluetooth code example, what does "bluetooth.available()" check for?

A) If the Bluetooth module is powered on B) If there are incoming messages to read C) If the battery is charged D) If the robot is moving

5. What is an important safety feature for remote control systems?

A) Making the robot go as fast as possible B) An emergency stop command that works immediately C) Removing all speed limits D) Ignoring connection status

6. What happens to wireless signal strength as distance increases?

A) Signal strength increases B) Signal strength stays the same C) Signal strength decreases (gets weaker) D) Distance doesn't affect signal strength

7. What is the ESP32 module primarily used for?

A) Only for powering motors B) Connecting to WiFi networks and internet communication C) Measuring temperature only D) Charging batteries

8. What is an advantage of creating a web interface for robot control?

A) It only works on one specific device B) It can be accessed from any device with a web browser C) It requires special software installation D) It doesn't work with smartphones

9. Describe three safety features you would include in a remote control robot system and explain why each is important. (Short Answer)

10. Compare WiFi and Bluetooth for robot control. Give one advantage and one disadvantage of each technology. (Short Answer)

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