DCI Standards and Codes 5

Question 1

In the ANSI/TIA cabling hierarchy, what term describes the main cross-connect that serves as the top level of the cabling infrastructure?

Accepted Answer

Main Cross-connect (MC)

Answer

The Main Cross-connect (MC) is at the top of the ANSI/TIA structured cabling hierarchy, typically located in the main equipment room and connecting to the entrance facility.

Question 2

What is the maximum backbone cable distance between a main cross-connect and an intermediate cross-connect using multimode optical fiber per ANSI/TIA-568?

Accepted Answer

2000 meters

Answer

ANSI/TIA-568 allows up to 2000 meters between the MC and IC using multimode optical fiber for campus backbone applications.

Question 3

Which standard defines the performance specifications for Category 8 cabling designed for data center use?

Accepted Answer

ANSI/TIA-568.2-D

Answer

ANSI/TIA-568.2-D includes Category 8 specifications, supporting 25GBASE-T and 40GBASE-T over a 30-meter channel for data center top-of-rack applications.

Question 4

When installing communications cabling, which NEC section prohibits running low-voltage communications cables in the same raceway as high-voltage power conductors?

Accepted Answer

Article 800.133

Answer

NEC Article 800.133 prohibits communications conductors from being placed in the same cable, raceway, or fitting with electric light, power, or Class 1 circuits.

Question 5

What does OSHA 29 CFR 1926.416 require that directly impacts telecommunications cable installers working on construction sites?

Accepted Answer

Protection from electrical hazards near exposed energized parts

Answer

OSHA 29 CFR 1926.416 requires workers to be protected from contact with exposed energized conductors, which applies when installers work near electrical systems.

(DCI) Data Cabling Installer Practice Test

(DCI) Data Cabling Installer Practice Test

DCI Standards and Codes 5