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BICSI RCDD-001 Exam Questions
BICSI Registered Communications Distribution Designer (Page 3 )

Updated On: 24-Feb-2026
Page 3 of 73
PDF with 358 Questions

Two sinusoidal signals have the same amplitude (A) and the same frequency (f). They differ in phase by 180 degrees. If these two signals are added together, the result is a sinusoidal signal having an amplitude of:

  1. Zero
  2. 0.707A and a frequency of f
  3. A and a frequency of 2f
  4. 2A and a frequency of f
  5. 2A and a frequency of 2f

Answer(s): A



Which of the following correctly lists the lowest frequency band to the highest frequency band?

  1. MF, HF, VHF, UHF
  2. UHF, VHF, HF, MF
  3. HF, MF, UHF, VHF
  4. VHF, UHF, MF, HF
  5. HF, MF, UHF, VHF

Answer(s): A



The conversion of an analog speech signal to a pulse code modulation (PCM) digital signal involves all of the following steps EXCEPT:

  1. Low pass filtering
  2. Periodic sampling
  3. Quantizing
  4. Companding
  5. Amplitude modulation

Answer(s): E



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






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