PHYSICAL LAYER AND TRANSMISSION MEDIA
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Bits can be send over guided and unguided media as analog signal by
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digital modulation
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amplitude modulation
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frequency modulation
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phase modulation
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Explanation:
Detailed explanation-1: -Analog modulation is typically used for AM, FM radio, and short-wave broadcasting. Digital modulation involves transmission of binary signals (0 and 1). Digital modulation involves transmission of binary signals (0 and 1).
Detailed explanation-2: -Digital modulation is the process of encoding a digital information signal into the amplitude, phase, or frequency of the transmitted signal. The encoding process affects the bandwidth of the transmitted signal and its robustness to channel impairments.
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