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5 Written questions

4 Multiple choice questions

  1. Analog is electrical signals made from pressure waves.Digital is either on or off.
  2. 1-pair Voice Grade UTP, 2-pair data-grade UTP, and optical fiber
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  4. Circuit is an end-to-end connection between two subscribers. Capacity is reserved on all trunk lines and switches.

4 True/False questions

  1. Define telephone modem, DSL, cable modem, 3G cellular, WiMax, Satellite Internet, broadband on power lines, and fiber-to-the-homeCircuit is an end-to-end connection between two subscribers. Capacity is reserved on all trunk lines and switches.

          

  2. Compare GSM and CDMA. Where are they dominant? What advantage does CDMA have in terms of channel usage?Analog is electrical signals made from pressure waves.Digital is either on or off.

          

  3. What is pulse code modulation? When is it used?Pulse code modulation is the signal being sampled 8,000 times per second. Each sample is 1/8000 of a second. Each sample period, the amplitude of the signal is sampled. Each filter can distinguish 256 loudness levels.Produces 8 bits per sample.

          

  4. What is a cellular telephone cell? What functions does the mobile telephone switching office serve?A cell is an area covered by a cellsite with antenna and equipment to serve mobile phones in the cell. The MTSO coordinates activity among the cellsites. It connects wired customers via a POP.