Free RCDD Exam Braindumps (page: 4)

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The signal at the input to a balanced twisted pair cable is 10 mW. The cable is 1000 feet long and has an attenuation of 1 dB per 100 feet. This cable is connected to the input of a receiver. The noise level at the input to the receiver is 1 microwatt.
What is the signal-to-noise ratio (SNR) (dB) at the receiver input?

  1. 10 dB
  2. 30 dB
  3. 40 dB
  4. 60 dB
  5. 100 dB

Answer(s): B



You must place CAT6 cable above a factory floor with automated welding machines and hammer forges. Of the following, what type of shielding would be most effective?

  1. Multi-layer braid
  2. Foil and braid
  3. Solid metallic conduit
  4. Flex metallic conduit
  5. Sch. 40 PVC conduit

Answer(s): C



Time division multiplexing (TDM) systems are designed to transport ________ between end point systems.

  1. Only analog signals
  2. Only digital signals
  3. A mix of both analog and digital signals
  4. Both analog and digital signals, but only one type at a time

Answer(s): B



The public telephone system is an example of a __________ system.

  1. Simplex
  2. Half-duplex
  3. Full-duplex
  4. Purely analog
  5. Purely digital

Answer(s): C






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