CPCT Cabling Standards & Installation Practices 4

Question 1

According to TIA-568, what is the maximum number of consolidation points allowed in a horizontal cabling run?

Accepted Answer

One

Answer

TIA-568 permits a maximum of one consolidation point per horizontal cabling run between the telecommunications room and the work area.

Question 2

Which pair color scheme is used for T568A wiring on an RJ-45 connector pin 1?

Accepted Answer

Green/White

Answer

In T568A wiring, pin 1 uses the Green/White (green with white stripe) wire from pair 3.

Question 3

What is the primary purpose of firestopping in telecommunications cabling installations?

Accepted Answer

To seal cable penetrations through fire-rated walls and floors to prevent fire spread

Answer

Firestopping seals penetrations through fire-rated building assemblies to restore the fire resistance rating and prevent the spread of fire and smoke.

Question 4

A technician measures PSACR-F during a cable test. What does this parameter assess?

Accepted Answer

Power Sum Attenuation to Crosstalk Ratio at Far-End

Answer

PSACR-F (Power Sum Attenuation to Crosstalk Ratio at Far-End) measures the combined far-end crosstalk from all pairs relative to attenuation, indicating noise immunity.

Question 5

Which grounding practice is required for metallic cable trays used in telecommunications installations?

Accepted Answer

Cable trays must be bonded to the telecommunications bonding backbone

Answer

Metallic cable trays must be bonded to the telecommunications bonding backbone per ANSI/TIA-607 to ensure proper grounding and personnel safety.

(CPCT) Certified Premises Cabling Technician Practice Test

(CPCT) Certified Premises Cabling Technician Practice Test

CPCT Cabling Standards & Installation Practices 4