VDV Cabling Infrastructure 3

Question 1

What type of fiber connector uses a push-pull latching mechanism and is commonly preferred in high-density patch panels?

Accepted Answer

LC

Answer

The LC (Lucent Connector) uses a push-pull latch similar to an RJ-45 and occupies half the footprint of an SC, making it ideal for high-density fiber installations.

Question 2

Which standard defines the color coding for T568A and T568B wiring configurations on 8-position modular jacks?

Accepted Answer

ANSI/TIA-568

Answer

ANSI/TIA-568 (Commercial Building Telecommunications Cabling Standard) defines both T568A and T568B pin/pair assignments for 8-position modular connectors.

Question 3

A Cat6 horizontal cable run tests at 103 meters. What is the technician's best corrective action?

Accepted Answer

Reroute the cable to shorten it to 90 meters or less

Answer

TIA-568 limits horizontal cabling (H channel) to 90 meters; the run must be rerouted or the pathway redesigned to meet this mandatory limit.

Question 4

What is the primary function of a splice enclosure in a fiber optic outside plant (OSP) installation?

Accepted Answer

To protect and organize fiber fusion or mechanical splices from environmental damage

Answer

Splice enclosures (also called splice closures) provide weatherproof, mechanically protective housing for fusion or mechanical splices in underground, aerial, or buried OSP fiber runs.

Question 5

When installing coaxial cable for a video distribution system, which factor most directly affects signal attenuation per unit length?

Accepted Answer

Conductor diameter and dielectric material

Answer

Attenuation per unit length in coax is primarily determined by the center conductor diameter and the dielectric material's loss tangent; larger conductors and low-loss dielectrics reduce attenuation.

(VDV) Voice Data Video Technician Certified Practice Test

(VDV) Voice Data Video Technician Certified Practice Test

VDV Cabling Infrastructure 3