Question 1: Which layers of the network model are specifically concerned with communication channel media and signaling technology?
Question 2: List at least four properties that characterize a communication channel.
Question 3: What determines the choice of analog or digital signaling?
Question 4: What is the purpose of multiplexing? Briefly explain time division multiplexing. Briefly explain frequency division multiplexing.
Question 5: What is a waveform?