Lesson 2

Question 1

Optical fibers can transmit either analog or digital signals.

True or False?

Answer 1

True

Question 2

Single-mode fiber has a smaller core than multimode fiber.

True or False?

Answer 2

True

Question 3

In an optical fiber, the light is tansmitted through the ?

A.) buffer
B.) cladding
C.) core
D.) jacket

Answer 3

C.) core

Question 4

The diameter of an optical fiber is traditionally measured in ?

A.) meters
B.) microns (micrometers)
C.) millimeters
D.) nanometers

Answer 4

B.) microns (micrometers)

Question 5

Rays of light transmitted in multimode fiber are called ?

A.) modes
B.) reflections
C.) refractions
D.) waves

Answer 5

A.) modes

Question 6

Optical power loss on any fiber in a cable is measured in ?

A.) dB
B.) dBm
C.) microwatts
D.) milliwatts

Answer 6

A.) dB

Question 7

Ten dB corresponds to a factor of ? in power.

A.) 2
B.) 10
C.) 20
D.) 100

Answer 7

B.) 10

Question 8

A fiber stripper removes the ? of the fiber.

A.) buffer coating
B.) cladding
C.) core

Answer 8

A.) buffer coating

Question 9

The ? protects the fiber from harm.

A.) aramid fiber strength members
B.) jacket
C.) primary buffer coating
D.) all of the above

Answer 9

D.) all of the above

Question 10

Which fiberoptic test instrument uses backscattered light 4 measurements

A.) Optical loss test set (OLTS)
B.) Optical time-domain reflectometer (OTDR)
C.) Tracer
D.) Visual fault locator (VFL)

Answer 10

B.) Optical time-domain reflectometer (OTDR)

Question 11

The wavelength of light used for most fiber-optic systems is in the ? region and ? the human eye.

A.) infrared/invisible
B.) solar/visible
C.) ultraviolet/invisible
D.) ultraviolet/visible

Answer 11

A.) infrared/invisible