COMPUTER NETWORKING

PHYSICAL LAYER AND TRANSMISSION MEDIA

DATA AND SIGNALS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Converting analog data to digital signals is generally called ____ ?
A
Attenuation
B
Amplification
C
Modulation
D
Digitization
Explanation: 

Detailed explanation-1: -Digitization involves two processes: sampling (digitization in time) and quantization (digitization in amplitude). This whole process is called analog-to-digital (A/D) conversion. The digitized signal is processed.

Detailed explanation-2: -In analogue-to-digital conversion, or digitizing, an analogue signal is converted into digital format. Analogue signal have amplitudes that are known at every instant in time, and can take on any value (usually limited by a minimum and maximum determined by the type of signal and the equipment used to acquire it).

Detailed explanation-3: -The correct answer is Modem. Modem stands for Modulator-Demodulator. Modulation and Demodulation are coding and decoding processes where the analog signals are converted into digital signals and vice versa for proper transmission of data.

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