BICSI Registered Communications Distribution Designer (RCDD) Sample Questions
The Registered Communications Distribution Designer® (RCDD®) certification certifies a candidate’s proficiency in the design, integration, planning, execution, and/or detail-oriented project management of telecommunications and data communications technology. The aforementioned designation is tracked using a programme called the Registered Communications Distribution Designer® (RCDD®). This certification will also be a useful addition to your professional resume. The article provides a list of BICSI Registered Communications Distribution Designer (RCDD) Sample Questions that cover core exam topics including –
- Define Scope of ICT Design: 10%
- Design ICT Solutions: 66%
- Support ICT Bid/Tender Process: 9%
- Support ICT Installation Process: 15%
Q1)Which quality gives copper-based media an edge over optical fibre cable?
- A. Weight
- B. Corrosion resistance
- C. Ability to handle analog signals
- D. Susceptibility to EMI
- E. Very high data rates
Correct Answer: C
Q2)Which benefit does using stranded conductors provide over using solid conductors?
- A. Less costly
- B. Simpler terminations
- C. Better high frequency performance
- D. More flexible
Correct Answer: D
Q3)Although not normally advised, composite conductors may be employed in unique situations since they offer all of the following benefits WITH THE EXCEPTION OF:
- A. Have good digital transmission characteristics
- B. Lightweight
- C. Inexpensive
- D. Easy to produce
- E. Easily embedded into other materials
Correct Answer: A
Q4)Which electrical parameter has the proper desired value displayed in BICSI Registered Communications Distribution Designer (RCDD)?
- A. Dielectric constant – high value
- B. Dielectric strength – high value
- C. Dissipation factor – low value
- D. Insulation resistance – high value
Correct Answer: A
Q5)The system attenuation of a communication system with an input signal strength of 1 W and an output signal power of 1 mW is:
- A. 3 dB
- B. 20 dB
- C. 30 dB
- D. 40 dB
- E. 1000 dB
Correct Answer: C
Q6)Two sinusoidal signals share the same frequency (F) and amplitude (A) (f). They are 180 degrees out of phase. When these two signals are combined, a sinusoidal signal with the following amplitude is produced:
- A. Zero
- B. 0.707A and a frequency of f
- C. A and a frequency of 2f
- D. 2A and a frequency of f
- E. 2A and a frequency of 2f
Correct Answer:A
Q7)Which of the following lists the frequency bands from lowest to highest correctly?
- A. MF, HF, VHF, UHF
- B. UHF, VHF, HF, MF
- C. HF, MF, UHF, VHF
- D. VHF, UHF, MF, HF
- E. HF, MF, UHF, VHF
Correct Answer: A
Q8)All of the following stages are necessary to convert an analogue voice signal to a digital signal with pulse code modulation (PCM), WITH THE EXCEPTION OF:
- A. Low pass filtering
- B. Periodic sampling
- C. Quantizing
- D. Companding
- E. Amplitude modulation
Correct Answer: E
Q9)A balanced twisted pair cable’s input receives a signal of 10 mW. A 1 dB attenuation per 100 feet occurs along the cable’s 1000 feet of length. The input of a receiver is connected to this cable. One microwatt of noise is present at the receiver’s input. What is the receiver input’s signal-to-noise ratio (SNR) (dB)?
- A. 10 dB
- B. 30 dB
- C. 40 dB
- D. 60 dB
- E. 100 dB
Correct Answer: B
Q10)A factory floor with automated welding equipment and hammer forges must have CAT6 cable installed above it. What kind of shielding among the following would be most efficient?
- A. Multi-layer braid
- B. Foil and braid
- C. Solid metallic conduit
- D. Flex metallic conduit
- E. Sch. 40 PVC conduit
Correct Answer: C
Q11)Assume that a 62.5/125 multimode fiber’s optical power is dispersed evenly throughout its core. What percentage of power is lost if this fibre is perfectly linked to a 50/125 fibre, meaning the two fibres are aligned and abutted in BICSI Registered Communications Distribution Designer (RCDD)?
- A. 0 percent
- B. 36 percent
- C. 50 percent
- D. 80 percent
- E. 100 percent
Correct Answer: B
Q12)A cable needs to be run between two equipment sites with different grounds and a potential difference of 2.1 V rms. Which of the following cables is NOT recommended for use?
- A. Multimode
- B. Singlemode
- C. UTP
- D. STP
Correct Answer: D
Q13)The output of a video camera is a coaxial cable. Distributing the video signal to equipment with balanced twisted pair inputs is required. It is possible to switch between these two various transmission media by utilising a:
- A. Balun
- B. Converter
- C. Modulator
- D. Cross connect
- E. Transceiver
Correct Answer: A
Q14)A SONET OC-1 channel has a data capacity of 51.84 Mbps and can carry 672 speech communications. 32,256 voice channels can be carried on a SONET OC-48 channel. What data rate MINIMUM is needed for the OC-48 channel?
- A. 155 Mbps
- B. 622 Mbps
- C. 2.5 Gbps
- D. 5 Gbps
- E. 10 Gbps
Correct Answer: C
Q15)Most like wave division multiplexing (WDM) are:
- A. Amplitude modulation
- B. Frequency modulation
- C. Time division multiplexing
- D. Frequency division multiplexing
- E. Carrier sense multiple access with collision detection (CSMA/CD)
Correct Answer: D
Q16)What type of signal coupling between two (2) circuits is NOT one of the following?
- A. Conductive
- B. Inductive
- C. Reactive
- D. Capacitive
- E. Electromagnetic
Correct Answer: C
Q17)Several CRT monitors near the engineering copy centre have intermittent visual distortion, you discover during a site inspection of the area. What is the MOST probable reason?
- A. Electromagnetic interference (EMI)
- B. Radio frequency interference (RFI)
- C. (EMC)
- D. Fast transients
- E. Electromagnetic discharge (ESD)
Correct Answer: A
Q18)Which of the following electromagnetic effects on a gadget is undesirable?
- A. (EMC)
- B. Electromagnetic interference (EMI)
- C. Radio frequency interference (RFI)
- D. Fast transients
- E. Electrostatic discharge (ESD)
Correct Answer:– B
Q19)Architectural design mandates that UTP cables be installed next to unshielded power lines. How should you go about laying up your cables?
- A. Demand that shielding be installed in the area before your UTP is installed by the architect or electrical engineer.
- B. You should maintain a 610 mm minimum separation (24 in).
- C. You should offer a 229 mm minimum spacing (9 in).
- D. You need to give at least two 101 mm (4 in) RMCs.
Correct Answer: B
Q20)After passing the elevator mechanical room, you are installing Category 6 unshielded twisted-pair (UTP) in a cable tray down a hallway. What should you do to prevent electromagnetic interference (EMI) effects?
- A. Establish a spacing of at least 1194 mm (47 in)
- B. Offer a 2060 mm minimum distance between objects (81 in)
- C. Demand that the architect put metallic foil shielding on the walls of the mechanical room.
- D. Install rigid metallic conduit (RMC) and intermediate metal conduit (IMC) in all places that are less than 4.6 metres (15 feet) from the mechanical room.
Correct Answer: A
