Problem 1

You are working for a company that has a network application for accessing a database of corporate profiles. From your computer workstation, a request for a profile travels over the corporate local area network to a modem. The modem, using DSL, connects to the internet and finally into the database service. The database service is essentially a modem and a mainframe computer. Create a table (or draw a figure) that shows every time data or signals are converted to a different from in this process. For each entry in the table, show where the conversion is taking place, the form of the incoming information, and the form of the outgoing information.

problem 2

Telephone systems are designed to transfer voice signals (4000 Hz). When a voice signal is digitized using pulse code modulation, what is the sampling rate, and how many quantization levels are used? How much data does that generate in one second? Are these the same sampling rate and quantization levels as used on a CD? Can you verify your answer?