Simplify the following text for a Grade 12 native English-speaking person.
Original: In computer networking and computer science , bandwidth , network bandwidth , data bandwidth , or digital bandwidth is a bit rate measure of available or consumed data communication resources expressed in bits\/second or multiples of it ( kilobits\/s , megabits\/s etc. ) .
Simplified: In computer network and computer science , digital bandwidth or just bandwidth is the capacity for a given system to transfer data over a connection .