1What is baseband transmission? Give one example.
2What is broadband transmission? Why does it need modulation?
3Write four differences between baseband and broadband transmission.
4Why is baseband transmission used only over short distances?
5How does broadband transmission send and receive signals at the same time?
6What does a modulator do? What are the modulating signal, the carrier signal and the modulated signal?
7In the three ways of modulating a digital signal, which property of the carrier wave changes in each?
8Write any five advantages of digital transmission.
9Why does noise affect a digital signal so little?
10Why is the internet box in a home called a modem?