FREE Registered Communications Distribution Designer (RCDD): Case Studies and Concepts Questions and Answers

Question 1

In terms of perimeter raceway systems, what is their primary intended purpose?

Accepted Answer

Small floor areas where the majority of telecommunication services will be along the walls

Answer

Equipment rooms where cable tray is cost prohibitive

Answer

Apartments or hotels where molding is accessible in the work area

Answer

Warehouses with minimal telecommunications services

Question 2

Among the options provided, which one does not represent a benefit associated with access floor systems?

Accepted Answer

They have a low initial cost

Answer

Cabling is easily accessible across the entire floor

Answer

Changes can be made quickly with little occupant disruption

Answer

They are designed for high capacity

Question 3

When planning the layout of a data center housing high-density servers, which type of system for managing airflow should be given top priority to ensure effective cooling?

Accepted Answer

Hot/cold aisle containment

Answer

Non-raised floor with overhead cooling

Answer

In-row cooling units

Answer

Raised floor with perforated tiles

Question 4

In your design of a horizontal pathway system involving 100 mm (4 in) conduit and pull boxes, considering architectural limitations for a single conduit layer (non-stacked), and comprising a main pathway system with five 100 mm (4 in) conduits, what is the smallest required width for the pull box?

Accepted Answer

1220 mm (48 in)

Answer

1520 mm (60 in)

Answer

1830 mm (72 in)

Answer

900 mm (36 in)

Question 5

While installing Category 6 unshielded twisted-pair (UTP) cables within a cable tray along a hallway adjacent to the elevator mechanical room, what precautionary measure should be implemented to mitigate the potential impact of electromagnetic interference (EMI)?

Accepted Answer

Provide a minimum separation of 1194 mm (47 in)

Answer

Require the architect to install metallic foil shielding on the mechanical room walls

Answer

Provide RMC/IMC (rigid metallic conduit/intermediate met

Answer

Provide a minimum separation of 2060 mm (81 in)

Question 6

Among the choices provided, which category of cable tray is most accurately characterized by having a bottom with ventilation openings and side rails?

Accepted Answer

Ventilated trough

Answer

Basket tray

Answer

Ventilated channel

Answer

Spline

Question 7

In the scenario where you need to connect a cable between two equipment locations with distinct grounds, resulting in a potential difference of 2.1 V rms, which among the provided cable options should be avoided for this purpose?

Accepted Answer

STP

Answer

Multimode

Answer

Singlemode

Answer

UTP