COMPUTER SCIENCE AND ENGINEERING
COMPUTER NETWORKING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Fiber-optic lines
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DSL lines
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Cable lines
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None of the above
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Detailed explanation-1: -An optical fiber is a very thin strand of glass or plastic surrounded by several layers of protective coating. It is capable of transmitting light signals over long distances without significant attenuation (loss) or interference from outside sources.
Detailed explanation-2: -Silica glass is the most commonly used in manufacturing because it exhibits fairly good optical transmission over a wide range of wavelengths. Silica can be drawn into fibers at reasonably high temperatures and has a fairly broad glass transformation range.
Detailed explanation-3: -Fiber optics, or optical fiber, refers to the technology that transmits information as light pulses along a glass or plastic fiber. A fiber optic cable can contain a varying number of these glass fibers–from a few up to a couple hundred. Another glass layer, called cladding, surrounds the glass fiber core.
Detailed explanation-4: -Optical fibers are most commonly made of 3 materials: large core plastic fiber, small core plastic fiber, and glass fiber.
Detailed explanation-5: -In comparing the data transmission speed of fiber and copper, fiber wins easily. Copper currently maxes out at 40 Gbps, whereas OM5 fiber reaches speeds of 100 Gbps. Distance-Over long distances, copper and fiber cables both experience signal loss, but this attenuation is much greater with copper.