DCI Standards and Codes 4

Question 1

Which pair combination is used for pins 1 and 2 in the T568B wiring standard?

Accepted Answer

Orange pair

Answer

In T568B, pins 1 and 2 use the orange/white-orange pair, which differs from T568A where pins 1 and 2 use the green/white-green pair.

Question 2

When must a fiber optic installation conform to ANSI/TIA-568.3-D rather than 568.2-D?

Accepted Answer

When installing optical fiber cabling components

Answer

ANSI/TIA-568.3-D is the specific standard for optical fiber cabling components and applies whenever fiber optic cable is being installed.

Question 3

A cable installer is working in a high-rise building and must run cable vertically between floors. Which NEC cable rating is appropriate for this application?

Accepted Answer

CMR

Answer

CMR (Communications Multipurpose Riser) rated cable is required for vertical runs between floors because it prevents fire from traveling up through the building via the cable jacket.

Question 4

According to ANSI/TIA-568, the maximum distance from a horizontal cross-connect to a telecommunications outlet in a single-tenant building is:

Accepted Answer

90 meters

Answer

The horizontal cabling subsystem allows a maximum of 90 meters for the permanent link, from the HC (Horizontal Cross-connect) to the TO (Telecommunications Outlet).

Question 5

What is the primary purpose of the ANSI/TIA-758-B standard?

Accepted Answer

Customer-owned outside plant cabling

Answer

ANSI/TIA-758-B covers customer-owned outside plant (OSP) telecommunications infrastructure, including cabling between buildings on a campus.

(DCI) Data Cabling Installer Practice Test

(DCI) Data Cabling Installer Practice Test

DCI Standards and Codes 4