CFOT - Certified Fiber Optic Technician Connectors and Terminations Questions and Answers

Question 1

A technician is experiencing high insertion loss after terminating a fiber optic cable with an epoxy/polish connector.
Microscopic inspection reveals a fractured fiber end-face.
Which of the following is the most likely cause of this issue?

Accepted Answer

Improper cleaving of the fiber before polishing.

Answer

Using the wrong grade of polishing film.

Answer

Over-filling the connector with epoxy.

Answer

Exceeding the epoxy's pot life.

Question 2

Which component of a fiber optic connector is primarily responsible for aligning the fiber core with another fiber?

Accepted Answer

The ferrule

Answer

The crimp sleeve

Answer

The connector housing

Answer

The strain relief boot

Question 3

During a field installation, a technician needs to terminate a single-mode fiber quickly. Which termination method eliminates the need for field polishing and adhesives?

Accepted Answer

Pre-polished/splice connectors (SOC)

Answer

Hot Melt connectors

Answer

Epoxy and polish connectors

Answer

Anaerobic adhesive connectors

Question 4

What is the primary advantage of using a heat-cured epoxy for terminating fiber optic connectors in a factory setting?

Accepted Answer

Highest reliability and lowest loss due to a strong fiber-to-ferrule bond.

Answer

Fastest curing time at room temperature.

Answer

Lowest material cost per connector.

Answer

Requires the fewest specialized tools for termination.

Question 5

A technician notices a significant amount of signal loss (attenuation) only when a patch cord is bent at a sharp angle. This type of loss is known as:

Accepted Answer

Macrobending loss

Answer

Scattering loss

Answer

Absorption loss

Answer

Splice loss

Question 6

Which of the following connector polish types offers the lowest back reflection and is typically identified by a green connector body or boot?

Accepted Answer

APC (Angled Physical Contact)

Answer

PC (Physical Contact)

Answer

UPC (Ultra Physical Contact)

Answer

Flat