CPCT Fiber Optic Cabling & Termination Flashcards
6 cards from real CPCT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CPCT Fiber Optic Cabling & Termination flashcards as text
Which fiber optic connector type uses a push-pull latching mechanism and is commonly used in high-density patch panels?
Answer: LC connector
The LC (Lucent Connector) uses a push-pull latch and its small form factor makes it ideal for high-density applications.
What is the primary difference between single-mode and multimode fiber optic cable?
Answer: Single-mode has a smaller core diameter and carries one light path, while multimode has a larger core carrying multiple light paths
Single-mode fiber has a ~9µm core allowing one light mode, enabling long distances, while multimode has a 50 or 62.5µm core supporting multiple modes over shorter runs.
What does OTDR stand for in fiber optic testing?
Answer: Optical Time Domain Reflectometer
An OTDR (Optical Time Domain Reflectometer) sends pulses of light into fiber and measures backscatter and reflections to locate faults and measure loss.
What is the maximum bend radius typically recommended for fiber optic cable during installation?
Answer: 20 times the cable diameter
During installation, fiber optic cable should not be bent to a radius less than 20 times the cable diameter to prevent microbending losses and physical damage.
Which fiber optic polishing style produces the lowest back reflection and is preferred for high-speed digital links?
Answer: APC (Angled Physical Contact)
APC connectors are polished at an 8-degree angle, directing reflected light away from the fiber core, achieving back reflection of -65 dB or better.
What color jacket is standardized for OS2 single-mode fiber optic cable per TIA-598?
Answer: Yellow
TIA-598 specifies yellow jacket color for OS2 single-mode fiber optic cable to visually distinguish it from multimode fiber types.