Bandwidth is used to measure electronic and other types of communication. This includes radio, electronics, and other forms of electromagnetic radiation, Bandwidth is the difference between the electronic signal having highest-frequency and the signal having the lowest-frequency.
In computer networks, bandwidth is often used as a term for the data transfer bit rate. More easily, the amount of data that is carried or passed from one point to another in a network, in a given time period (usually a second). [1]