which of the following best describes fiber optic transmission?

Question

light pulses sent through copper wires
light pulses sent through tiny glassstrands
signals carried on electromagnetic waves
analog signals sent through tiny glass strands

Answer 1

light pulses sent through tiny glassstrands

The index of refraction of the glass allows for almost no light to escape from the glass strand.
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Answer 2

Light pulses sent through tiny glass strands. Not a guess, I work with and around the stuff.

Answer 3

light pulses sent through tiny glassstrands

Answer 4

Cable (Virgin Media) is a fibre optic cable from their head end all a thank you to the container on the tip of your highway, from there it relatively is sent via a coaxial (aerial lead) cable below the line, below your backyard and (via the container on your exterior wall) into your place. BT makes use of the conventional telephone lines you notice from the community important junction container on your place which could be many miles. BT lines have been basically designed to hold low bandwidth information (voice) and as such have themes transmitting the intense information rates required for the utmost marketed throughputs ("as much as 24Mb!") the place in genuine international words you could finally end up easily receiving 2Mb. Cable tells you you get a undeniable parent and you get it as a results of fact their infrastructure became designed from the start to be a intense bandwidth provider. in case you will get fibre optic each and each of ways from the provider to the interior your place the rates you will get are extra special - it would be conceivable to realize rates interior the Gb/s selection while you're that fortunate!

Answer 5

the second one