Which of the following device is full duplex?

Options

A. Mobile phone
B. Walky-talky
C. Loud speaker
D. Radio

Answer

**Step-by-Step Solution:**

1. **Understanding Full Duplex:**
- Full duplex communication allows both devices to send and receive data simultaneously. This means that while one device is transmitting data, the other can also transmit data at the same time without any interference.

2. **Identifying the Options:**
- The question typically provides multiple devices or systems as options. To determine which one is full duplex, we need to analyze the communication capabilities of each device.

3. **Analyzing Each Option:**
- For each device listed in the options, we need to check if they support simultaneous transmission and reception of data.
- For example, a mobile phone allows two people to talk and listen at the same time, making it a full duplex device.
- In contrast, devices like walkie-talkies or CB radios typically allow only one party to speak at a time, making them half duplex.

4. **Conclusion:**
- After analyzing the options, we conclude that the mobile phone is an example of a full duplex device, while the others do not support simultaneous communication.

5. **Final Answer:**
- The correct answer is the mobile phone, as it is a full duplex device.

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