RCDD Exam Questions

Most types of firestop putty have ________ properties.

A ________ eliminates the need to remove or install materials.

A(n) ________ system is considered a mechanical firestop.

What type of material does NOT support combustion even under accelerated conditions?

Cementitious materials are ________ based materials.

You are designing a cabling system for a chemical plant. What type of device is needed to prevent the spread of fire along the cable other than the barrier penetrations?

You are designing the cabling infrastructure for a lab office building that will frequently change tenants. The owner will be responsible for all of the infrastructure that feeds e...

You are designing a firestop system for a hospital with several floors that have isolation rooms. Air leakage control is important to ensure rooms are sealed and restrict the sprea...

A fire ________ is a contained area that is completely enclosed by fire resistant walls, floors, and ceilings.

The recommended MAXIMUM value for the bonding resistance between the nearest available grounding electrode and the busbar in an entrance facility (EF) is ________ ohms.

Surge currents due to lightning and other sources MUST be ________ before they penetrate the infrastructure.

An isolated ground receptacle may be identified by:

Certain systems must exist relative to bonding and grounding at every site. Which of the following is NOT one such system?

As a guide, the recommended maximum AC current value on any bonding conductor should be less than ________ amperes.

The MINIMUM dimensions of the telecommunications main grounding busbar is ________ and variable in length.

The impedance of the equipment grounding conductor can only be accurately measured with an instrument known as a(n):

You are designing a telecommunications grounding system for a telecommunications room (TR). The TMGB is located 15 m (50 ft) from the telecommunications rack. What is the MINIMUM A...

Electrical power cables are usually routed above aerial cable in order to:

Which of the following is NOT provided by the ac grounding electrode system?

Often associated with raised flooring, a(n) ________ may consist of copper straps taped to the concrete floor, or it may be the floor itself with the stringers that support the til...

As a guide, the MAXIMUM recommended DC current value on any bonded conductor should be less than:

Based on documentation contained within the Insulated Cable Engineers Association (ICEA) standard P32-382, Short Circuit Characteristics of Insulated Cable, a copper conductor is c...

Which of the following covers lightning protection systems and defines as exposed anything above ground and outside the zone of protection?

Phase difference is the relationship in time between two waveforms of the same:

Which of the following refers to the increase in the nominal voltage for a duration of 3600 cycles?

All of the following are used to control static discharge EXCEPT:

An isolated ground is used to:

For the telecommunications industry, the nominal operating voltage is ________ volts DC.

A rapid increase in voltage with a duration of half a cycle best describes a(n):

The average power consumption in a telecommunications room (TR) is 2260 watts per hour. What is the heat dissipation in BTUs?

If you have a circuit with 120 volts, 12 amps, and 10 ohms, it has a peak power of ________ watts.

Using Ohms law, a circuit of 120 volts and a resistance of 15 ohms will have a current of ________ amps.

Which of the following electrical devices is used to convert AC to DC?

You are designing a large equipment room (ER) that will house many servers, switches, backup storage drives, and other communications equipment including peripheral devices. To pre...

DC loads are generally expressed in:

You have been asked to provide a N+1 level of power redundancy in the new equipment room (ER) being designed with a Tier-II power supply. What should you do?

You have been asked what the estimated power cost will be per month (30 days) for the new equipment room you are designing. The power load you have calculated to be an average of 1...

Multiples of the basic frequency of an electrical waveform are called:

You have been asked to provide a UPS that is always serving the load from its batteries and the electrical supply is used only to recharge the batteries. Which one of the following...

A large telecommunications facility, by most codes, must be designed with an EPO switch located at:

The formula for calculating BTUs from electrical power is:

Which class of the system applies when the premise only has a single equipment room (ER), and it is the only telecommunications space administered?

Which class of the system was created to secure a single equipment room (ER)?

Color codes for cross-connections fields have been used for many years. Which color is used to identify campus backbone?

When labeling pathways, which one of the following guidelines should be met?

Which one of the following is part of the security metric to consider in selecting the appropriate labels for an administrative system?

Class ________ administration provides for the telecommunications infrastructure administration needs of a single building, or of a tenant served by a single or multiple. It also i...

Color codes for cross-connection fields have been used for many years. Which color is used to identify network connections?

If a telecommunications grounding busbar is installed in the telecommunications room (TR) with the identifier of 310, located on the third floor, then the telecommunications ground...

Color codes for cross-connections fields have been used for many years. Which color is used to identify horizontal cable?