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5 Written questions

4 Multiple choice questions

  1. Customer premises Equipment consists of telephones, wires, and other infrastructure on the customer premises. Most business have a PBX. It acts like switchboard. Local Loop- the access line to the customer. Transport-Carriage of voice during a conversation
  2. 1-pair Voice Grade UTP, 2-pair data-grade UTP, and optical fiber
  3. Converts digital computer signals to analog and sent over telephone lines. 3G is for sending data faster with a speed 2-3 Mbps. WiMAX is to replace DSL, Cable and cellular service with 1-4 Mbps. Satellite is very expensive because of long transmission distance. Two way data transmission is expensive. Some carriers are pushing fiber directly to the home with 100 Mbps or more.
  4. 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.

4 True/False questions

  1. What is the thrust of Nyquist's formula? (Sampling rate should be twice the bandwidth)Analog is electrical signals made from pressure waves.Digital is either on or off.

          

  2. Define circuit switching and compare with packet switchingADSL uses 1 VG UTP lines. Cable uses optical fiber to the neighborhood with thick coaxal cables. Thin coaxial drop cables go to the residences.

          

  3. Compare DSL and cable optionsADSL uses 1 VG UTP lines. Cable uses optical fiber to the neighborhood with thick coaxal cables. Thin coaxial drop cables go to the residences.

          

  4. Compare voice and data traffic; How are circuit switching and packet switching used with voice and data traffic? Why?Circuit is an end-to-end connection between two subscribers. Capacity is reserved on all trunk lines and switches.

          

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