RCDD-001

RCDD-001 practice questions, page 4 of 15, with answer review and explanations.

Question 16

A SONET OC-1 channel can carry 672 voice signals and has a data rate of 51.84 Mbps. A SONET OC-48 channel can carry 32,256 voice channels. What MINIMUM data rate is required for the OC-48 channel?

  1. 155 Mbps
  2. 622 Mbps
  3. 2.5 Gbps
  4. 5 Gbps
  5. 10 Gbps

Question 17

Wave division multiplexing (WDM) is most similar to:

  1. Amplitude modulation
  2. Frequency modulation
  3. Time division multiplexing
  4. Frequency division multiplexing
  5. Carrier sense multiple access with collision detection (CSMA/CD)

Question 18

Which of the following is NOT a form of signal coupling between two (2) circuits?

  1. Conductive
  2. Inductive
  3. Reactive
  4. Capacitive
  5. Electromagnetic

Question 19

The electromagnetic spectrum of visible light lies in the ___________ frequency range of the spectrum.

  1. 1 GHz
  2. 100 GHz
  3. 10 THz
  4. 1 PHz
  5. 100 PHz

Question 20

During a site survey you notice that several CRT displays in the vicinity of the engineering copy center have sporadic visual distortion. What is the MOST likely cause?

  1. Electromagnetic interference (EMI)
  2. Radio frequency interference (RFI)
  3. (EMC)
  4. Fast transients
  5. Electromagnetic discharge (ESD)