Question 1. A telephone network has a bandwidth of 3.4 kHz. (a) Calculate the capacity of the channel for a signal-to-noise ratio of 30 dB. (b) Calculate the minimum signal-to-noise ratio required for information transmission through the channel at the rate of 4800 bits/s. (c) Calculate the minimum signal-to-noise ratio required for information transmission through the channel at the rate of 9600 bits/s.                       Question 2 A communications channel with a bandwidth of 4 kHz has a signal power to noise ratio of 7. The bandwidth is reduced by 25 %. How much should the signal power be increased to maintain the same channel capacity?

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Network transmission cabling

A network is a collection of devices connected by communication links. A device can be a computer or any instrument capable of sending and receiving data or information formed by other nodes toward the network. A channel that connects people or things is known as a network. It sends the data from one place to another. It is the basic concept of a computer, network, and data communications.