OSP Networks Flashcards
True/False
The biggest advantage of optical fiber is the fact it is the most cost effective means of transporting information.
ANSWER: True
The high bandwidth and low attenuation of optical fiber allows transmitting more signals farther which translates into much lower costs.
True/False
Telephone networks have been converted to fiber, including long distance and metropolitan networks, but fiber to the home (FTTH) is not yet feasible.
ANSWER: False
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.
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. Rugged or remote locations
Virtually all the telephone (and Internet) backbone is fiber, except in remote areas where satellite communcations is still used.
\_\_\_\_\_\_\_ 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
CATV builds its “hybrid fiber-coax” or HFC system by overbuilding coax with copper.
Copper networks can be converted to fiber optics using \_\_\_\_\_\_\_\_\_\_. A. Fiber hubs B. Media converters C. Patch panels D. Rewiring
ANSWER: B. Media converters
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.
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.
Multiple Response: Identify one or more choices that best complete the statement or answer the question.
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.
