Cabling Standards & Installation Practices Flashcards
7 cards from real CPCT practice questions. Tap to flip, then mark Knew It or Still Learning โ missed cards come back until you master them.
Read the first 7 Cabling Standards & Installation Practices flashcards as text
According to TIA-568, what is the maximum number of consolidation points allowed in a horizontal cabling run?
Answer: One
TIA-568 permits a maximum of one consolidation point per horizontal cabling run between the telecommunications room and the work area.
Which pair color scheme is used for T568A wiring on an RJ-45 connector pin 1?
Answer: Green/White
In T568A wiring, pin 1 uses the Green/White (green with white stripe) wire from pair 3.
What is the primary purpose of firestopping in telecommunications cabling installations?
Answer: To seal cable penetrations through fire-rated walls and floors to prevent fire spread
Firestopping seals penetrations through fire-rated building assemblies to restore the fire resistance rating and prevent the spread of fire and smoke.
A technician measures PSACR-F during a cable test. What does this parameter assess?
Answer: Power Sum Attenuation to Crosstalk Ratio at Far-End
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.
Which grounding practice is required for metallic cable trays used in telecommunications installations?
Answer: Cable trays must be bonded to the telecommunications bonding backbone
Metallic cable trays must be bonded to the telecommunications bonding backbone per ANSI/TIA-607 to ensure proper grounding and personnel safety.
What installation issue is most likely when a cable tester shows high return loss on a horizontal link?
Answer: Impedance mismatches caused by excessive bends, kinks, or poor terminations
High return loss is caused by impedance discontinuities from sharp bends, kinks in the cable, or poor termination quality that disrupts the cable's characteristic impedance.
Per TIA-569, what is the minimum recommended width of a cable tray in a telecommunications pathway?
Answer: 150 mm (6 in)
TIA-569 recommends a minimum cable tray width of 150 mm (6 inches) for telecommunications pathways to provide adequate cable capacity.