DCI - Data Cabling Installer Copper Cable Termination Questions and Answers

Question 1

According to TIA-568 standards for Category 6A cabling, what is the maximum allowable length that the twisted pairs can be untwisted from the point of termination?

Accepted Answer

0.5 inches (13 mm)

Answer

1.0 inch (25 mm)

Answer

0.75 inches (19 mm)

Answer

0.25 inches (6 mm)

Question 2

An installer is terminating a horizontal cable run between a patch panel and a wall outlet in a new commercial office in the United States. The project specifications require adherence to the most commonly used wiring standard for new commercial networks in the US. Which wiring scheme should the installer use for both ends of the cable?

Accepted Answer

T568B

Answer

USOC

Answer

T568A

Answer

10BASE-T

Question 3

When seating conductors into the Insulation Displacement Connectors (IDCs) of a keystone jack or a 110-style patch panel, which of the following tools is specifically designed to ensure a proper, gas-tight connection and trim the excess wire simultaneously?

Accepted Answer

Punch-down tool with a 110 blade

Answer

Crimping tool

Answer

Cable stripper

Answer

Flush cutters

Question 4

During a post-installation test, a specific cable run fails due to excessive crosstalk. Upon visual inspection of the termination at the wall outlet, the installer notes that while the color code is correct, the cable jacket has been stripped back several inches and the individual pairs are untwisted for a significant length before entering the keystone jack. What is the most likely cause of the test failure?

Accepted Answer

Exceeding the maximum pair untwist length

Answer

Use of the wrong category of cable

Answer

A split pair wiring error

Answer

The cable exceeding the 90-meter length limit

Question 5

What is the primary physical difference between the T568A and T568B wiring standards for an 8P8C (RJ45) connector?

Accepted Answer

The positions of the orange and green pairs are swapped.

Answer

The positions of the blue and brown pairs are swapped.

Answer

T568B is for shielded cable while T568A is for unshielded.

Answer

T568A uses all eight pins for data, while T568B only uses four.

Question 6

A technician uses a cable stripper to remove the outer jacket of a Cat6 cable. While doing so, the blade is set too deep and cuts through the insulation of one of the conductors, exposing the copper. What is the most probable consequence of this error if the cable is terminated without fixing the issue?

Accepted Answer

A potential for a short circuit or performance degradation.

Answer

The cable will have improved grounding.

Answer

The cable will only operate at 100 Mbps instead of 1 Gbps.

Answer

It will have no effect on the cable's performance.