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in Communication Systems by (48.1k points)
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Which of the following device is full duplex? 

(a) Mobile phone 

(b) walky-talky

(c) loud-speaker 

(d) radio

1 Answer

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by (48.5k points)
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Best answer

(a) Mobile phone

A mobile phone is a full duplex device by which two persons can talk and hear each other at the same time.

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