Question 1

From a 1000 ft (305 m) roll of optical fiber, how many MAXIMUM length centralized optical fiber cabling runs can be made?

Accepted Answer

The answer of From a 1000 ft (305 m) roll...

Question 2

A conduit run is installed from the ER to a TR. It has two (2) 90 degree bend and a length of 20 m (65 ft). What will be the MINIMUM test rating of the pull cord left in the conduit?

Accepted Answer

The answer of A conduit run is installed from the...

Question 3

Which of the following is true when describing slip sleeves or gutters?

Accepted Answer

The answer of Which of the following is true when...

Question 4

Which of the following is NOT considered acceptable in an information technology system (ITS) conduit design and installation?

Accepted Answer

Flexible conduit is not recommended for ITS conduit design and installation. It should only be used in short lengths to allow for equipment movement and vibration. The other options (A, B, C, and E) are all acceptable practices in ITS conduit design and installation.

Question 5

The standard floor space coverage area for each building automation system (BAS), is a BAS outlet or device for every_______ of floor space.

Accepted Answer

The standard floor space coverage area for each BAS is approximately 23 square meters (250 square feet).

Question 6

When designing a backbone distribution system, you are asked to include a combination of media types. Your choice of media types include:

Accepted Answer

Including any combination of copper, fiber, and wireless would provide the greatest flexibility and redundancy in the backbone distribution system. It allows for different media types to be used based on specific needs and can also serve as a backup in case one media type fails.

Question 7

When designing a backbone distribution system, you will need to include a telecommunications enclosure (TE). A TE can be defined as a:

Accepted Answer

A telecommunications enclosure (TE) is a point where the backbone cabling interfaces with the horizontal cabling. This allows for consolidation of telecommunications rooms, simplifies cable routing and reduces cabling costs. The other options (A, C, D, and E) do not fully capture the function and purpose of a TE.

Question 8

You are designing a horizontal pathway system where you will provide 100 mm (4 in) conduit and pull boxes. The building architectural elements will only allow for a single layer of conduits (not stacked). The main horizontal pathway system consists of five 100 mm (4 in) conduits. Large single sheath copper cables are not expected to be placed. Which of the following is the MINIMUM width pull box that is to be provided?

Accepted Answer

The minimum width of the pull box should be at least 48 inches (1220 mm) because the National Electrical Code (NEC) requires that the pull box be at least 6 times the diameter of the largest conduit when conduits enter and exit on the same side. Since the largest conduit is 100 mm (4 in), 6 times 4 inches is 24 inches, but since there are multiple conduits, the width must accommodate all conduits side by side, leading to a minimum of 48 inches.

Question 9

The MINIMUM finished height of access flooring in a general office area is:

Accepted Answer

The answer of The MINIMUM finished height of access flooring...

Question 10

Which of the following is NOT an advantage of access floor systems?

Accepted Answer

Access floor systems typically have a higher initial cost due to the materials and installation required, making option A the correct choice as it is not an advantage.

Question 11

Cables are installed in a ceiling in a straight line. The ceiling run is 60 m (200 ft) in length. What is the MINIMUM number of J-hooks required to support the cables?

Accepted Answer

J-hooks are typically spaced every 1.5 meters (5 feet) to support cables. For a 60-meter run, you would need 60 / 1.5 = 40 J-hooks.

Question 12

The standard floor space coverage area for each building automation system (BAS) is a BAS outlet or device for every ________ of floor space.

Accepted Answer

The standard floor space coverage area for each BAS outlet or device is 23 sq m (250 sq ft).

Question 13

Perimeter raceway systems should be used primarily for:

Accepted Answer

Perimeter raceway systems are designed to run along the walls and are best suited for small floor areas where the majority of telecommunication services will be along the walls. They are a cost-effective solution when cable tray is prohibitive. They are not suitable for underfloor pathways, apartments or hotels where molding is accessible in the work area, or warehouses with minimal telecommunications services.

Question 14

Using the "pathway design" for horizontal cable distribution, how many cable runs are placed to serve 15 individual?

Accepted Answer

The answer of Using the "pathway design" for horizontal cable...

Question 15

An existing ceiling raceway system has 115,000 sq mm (177 sq in) of cross-sectional area available for distribution of cable runs. How many can be served by the existing system?

Accepted Answer

The existing ceiling raceway system has 177 square inches available, which matches option C.

Question 16

When placing an optical fiber cable in the horizontal optical fiber cabling subsystem, what is the MAXIMUM number of splices that can be used?

Accepted Answer

According to TIA-568.0-D, section 8.1.1.1, a maximum of two splices are allowed in a horizontal optical fiber cabling subsystem.

Question 17

Which type of cable tray is best described as a ventilated bottom with side rails?

Accepted Answer

The best choice is ventilated trough because it has a ventilated bottom and side rails, which allows for proper air circulation within the tray while also providing cable support.

Question 18

In the ceiling zone method of distribution, the usable floor area should be divided into zones each measuring:

Accepted Answer

According to the ceiling zone method of distribution, the usable floor area should be divided into zones measuring 23 sq m (250 sq ft) to 84 sq m (904 sq ft) in order to ensure uniform air distribution and avoid over- or under-sizing of the HVAC system. Choices A, B, D, and E either have zones that are too small or too large for optimal efficiency.

Question 19

Which of the following statements best describes what a backbone distribution system typically provides?

Accepted Answer

A backbone distribution system typically provides building connections between floors in a multistory building, facilitating communication and data transfer across different levels.

Question 20

You are designing a horizontal distribution system that will have a zone box located 71.6 m (235 ft) away from the telecommunications room (TR). A 50 mm (2 in) conduit is designed from the TR to a pull box located 36.6 m (120 ft) away from the TR. A 1 1/2 inch conduit is designed from the pull box to the zone box located 35.1 m (115 ft) beyond the pull box. Assuming no conduit bends, and excluding the TR and zone box, what is the total number of pull boxes/pull points required in this horizontal conduit system between the telecommunications room (TR) and zone box?

Accepted Answer

According to NEC 2017 Article 300.19(A), "where the length of the conduit or tubing from the last point of support to the outlet or termination point exceeds 1000 mm (3 ft), as used in this section, a box or conduit body shall be installed at least every 1000 mm (3 ft) thereafter". 
In this case, the distance between TR and the pull box is 36.6 m (120 ft) which is equal to 36 boxes, and the distance between the pull box and the zone box is 35.1 m (115 ft) which is equal to 34 boxes. Therefore, a total of 70 boxes are required. According to NEC 2017 Article 328.24(B)(1), "conduits that are 2 in. or smaller, and are run exposed for a total length of not more than 3.05 m (10 ft) can be wired without the installation of conduit bodies or pull boxes". Therefore, only one pull box is required in the 50 mm (2 in) conduit between TR and pull box. Hence the total number of pull boxes/pull points required in this horizontal conduit system between the telecommunications room (TR) and zone box is 3.

Exam 1: BICSI Registered Communications Distribution Designer - RCDD