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A transmission mode that can transmit data in both the directions but transmits in only one direction at a time.

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A transmission mode that can transmit data in both the directions but transmits in only one direction at a time.

(a) simplex

(b) half duplex

(c) full duplex

(d) semi-duplex

This question was addressed to me in a national level competition.

My doubt stems from Modulation Techniques topic in chapter Data Communications and Computer Networks of Computer Fundamentals

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Correct answer is (b) half duplex

To explain I would say: The half duplex mode supports two way traffic but only in one direction at a time.

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