Answer the following questions in details
Question 1: What is a circuit? Describe the two-wire and four-wire circuits. What device boosts a weak signal (analog/digital)?
Question 2: What is a channel? Distinguish between a CPE switch and a Network switch.
Question 3: Define virtual circuits (VCs) and PVCs.
Question 4: Define frequency, wavelength, amplitude, phase, and bandwidth.
Question 5: Discuss the characteristics of analog and digital networks.
Question 6: Describe how digital signals are transmitted over an analog circuit and analog signals over digital circuit.
Question 7: Differentiate between the following multiplexing techniques in terms of mechanics, technology, and applications.
(a) FDM; (b) TDM; (c) STDM
What are the key shortcomings of TDM and how does STDM seek to overcome these?
Question 8: Describe WDM/DWDM.
Please keep it simple and short and no copy and paste or at least help me get started?