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Controlling the frequency is referred as _________

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Controlling the frequency is referred as _________

(a) frequency modulation

(b) hertz modulation

(c) amplitude modulation

(d) phase modulation

I got this question in exam.

My doubt stems from Multiplexing in section Data Communications and Computer Networks of Computer Fundamentals

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The correct choice is (a) frequency modulation

Explanation: It is referred to as frequency modulation. When there is a change in frequency, it is referred to as frequency modulation.

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