VDV Copper Cabling 3

Question 1

When terminating Cat6A cable to an 8P8C (RJ-45) jack, which 110-style punch-down tool setting should be used?

Accepted Answer

The low-impact (cut) setting for solid conductors

Answer

110-style punch-down tools have a low setting for solid wire (which is used in horizontal cabling) to seat the conductor without over-driving it.

Question 2

What is the function of a cable balun in a copper cabling system?

Accepted Answer

Convert between balanced (twisted pair) and unbalanced (coaxial) transmission

Answer

A balun (balanced-unbalanced) converts signals between the balanced differential signaling of twisted pair and the unbalanced single-ended signaling of coaxial cable.

Question 3

Which standard governs the testing requirements for Category 6A permanent links and channels?

Accepted Answer

ANSI/TIA-568.2-D

Answer

ANSI/TIA-568.2-D defines balanced twisted-pair cabling components, installation practices, and field testing requirements including Cat6A.

Question 4

A 25-pair backbone cable uses what color code system to identify each pair?

Accepted Answer

A 5-color tip group combined with a 5-color ring group giving 25 combinations

Answer

25-pair cables use a binder color system combining 5 tip colors (white, red, black, yellow, violet) with 5 ring colors (blue, orange, green, brown, slate) to create 25 unique pairs.

Question 5

What is propagation delay in copper cable, and why does it matter for structured cabling?

Accepted Answer

The time for a signal to travel from one end to the other; excessive delay causes timing errors in high-speed networks

Answer

Propagation delay is the transit time of a signal through the cable, and skew between pairs must stay within limits to ensure correct reassembly of parallel data streams.

(VDV) Voice Data Video Technician Certified Practice Test

(VDV) Voice Data Video Technician Certified Practice Test

VDV Copper Cabling 3