Data Communication and Computer Network ( MCA(IV)/042/Assignment/2020-21 )

Q1. (a) Define Modulation . What are its advantages?Ans. Modulation is the process of converting data into radio waves by adding information to an electronic or optical carriersignal. A carrier signal is one with a steady waveform -- constant height, or amplitude, and frequency. Information can beadded to the carrier by varying its amplitude, frequency, phase, polarization -- for optical signals --...