What is banddwidths and speed meanning?

Answer 1

A computer's speed refers to its CPU (Control Processor Unit) speed which is measured in Hertz (cycles per second). The more cycles that a computer can do in a second, the more program commands that it can execute. Think of it as how fast a pack of runners can go. The bandwidth then, is like a bridge that all the runners have to go over. The wider the bridge or bandwidth, the more runners it will allow to cross at the same time.