BICSI RCDD - Registered Communications Distribution Designer Exam

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Total 358 questions

If the input signal power to a communication system is 1 W and the output power is 1 mW, the system attenuation is:

  • A. 3 dB
  • B. 20 dB
  • C. 30 dB
  • D. 40 dB
  • E. 1000 dB


Answer : C

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?

  • A. 10 dB
  • B. 30 dB
  • C. 40 dB
  • D. 60 dB
  • E. 100 dB


Answer : B

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?

  • A. 155 Mbps
  • B. 622 Mbps
  • C. 2.5 Gbps
  • D. 5 Gbps
  • E. 10 Gbps


Answer : C

All of the following are nominal wavelengths for laser light sources EXCEPT:

  • A. 700 nm
  • B. 850 nm
  • C. 1300 nm
  • D. 1310 nm
  • E. 1550 nm


Answer : A

A video camera has a coaxial cable output. The video signal is to be distributed to devices that have balanced twisted pair inputs. The transition between these two different transmission media can be accomplished by using a:

  • A. Balun
  • B. Converter
  • C. Modulator
  • D. Cross connect
  • E. Transceiver


Answer : A

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Total 358 questions