FOA Reference Guide To Outside Plant Fiber Optics
And Study Guide To FOA Certification
Answers To Chapter Questions
Chapter 3 Quiz - OSP Networks
True/False
Indicate whether the statement is true or false.
1. The biggest advantage of optical fiber is the fact it is the most cost effective means of transporting information.
ANSWER: T
The
high bandwidth and low attenuation of optical fiber allows transmitting
more signals farther which translates into much lower costs.
2.
Telephone networks have been converted to fiber, including long
distance and metropolitan networks, but fiber to the home (FTTH) is not
yet feasible.
ANSWER: F
FTTH now is cost effective because it
allows new services (like video and games) that generate new revenue -
plus it has much lower operational costs.
Multiple Choice
Identify the choice that best completes the statement or answers the question.
3. Today, with the exception of some _________, the entire telephone backbone is fiber optics..
A. Rugged or remote locations
B. Ultra-high speed connections
C. Large cities
D. Triple play systems
ANSWER: A
Virtually
all the telephone (and Internet) backbone is fiber, except in remote
areas where satellite communications is still used.
4. _______ companies ”overbuild with fiber, often lashing fiber optic cables to installed aerial coax cable.
A. Independent telephone
B. CATV
C. Utilities
D. Private network
ANSWER: B
CATV builds its "hybrid fiber-coax" or HFC ssytem by overbuilding coax with copper.
5. Copper networks can be converted to fiber optics using __________.
A. Fiber hubs
B. Media converters
C. Patch panels
D. Rewiring
ANSWER: B
Media converters convert from copper to fiber or even MM to SM fiber.
Multiple Response
Identify one or more choices that best complete the statement or answer the question.
6. The bandwidth and distance capability of optical fiber means that __________. (choose all that apply)
A. Fewer cables are needed
B. Fewer repeaters are needed
C. Less power is consumed by the network
D. Less maintenance is required
ANSWER: A,B,C,D
Optical
fiber offers all these advantages. More signals can be carried on a
single fiber by multiplexing (time or wavelength), fiber stretched much
further between repeaters than copper, transmitters require much less
power than copper transmitters and fewer components using less power
means higher reliability and less maintenance.
7. Which of the following communications systems typically use fiber optic backbones? (choose all that apply)
A. Telephones
B. CATV
C. Internet
D. Cell Phones
ANSWER: A,B,C,D
Virtually all communications systems depend on fiber, even wireless antennas are connected on fiber to the phone backbone.
- Next: Lesson 4: Fiber Optic Transmission Systems and Components
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