Analog signals can be boosted. But when you boost an analog signal, you also boost the distortion or static along with the signal. Digital signals One way to preserve the fidelity of analog signals is to turn them into digital signals. That's done by sampling an analog signal, say 8000 times a second. Then this binary information is sent through the network as a series of pulses of electricity or light.
Digital signals can perfectly replicate their source at the receiving end.
Digital signals can be sent at rapid speeds-as fast as the latest laser and laser detectors can transmit and receive. Digital signals are discrete, limited. When the pulse is on, it's on. When it's off, the pathway is not being used. Packets are separate and distinct chunks of data that are encoded and sent on their way along a network, where they are decoded at the end of the transmission.