check out this link
http://en.wikipedia.org/wiki/Optical_fiber
2006-09-24 22:47:02
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answer #1
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answered by Anonymous
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Ok people, seems to be a bit of confusion over SMF v. MMF
The name has nothing to do with how many fibres or cores, are in the cable. It's all about the way the light is transmitted down it.
Single mode fibre - generally 9micron - this is able to support greater distances than MMF, as a general rule of thumb, and it depends on the bandwidth, and the type of interface(GBIC or SFP), distances for Single Mode Fibre are :
1000BaseLX/LH - up to 10km *** beware, the IEEE802.3z standard states 5km
1000BaseZX - up to 70km
Multimode Fibre - MMF
1000BaseSX (50micron) - up to 550metres
1000BaseLX (50micron) - up to 550metres
MMF (62.5micron)
1000BaseSX - 220 metres
Note that there are exceptions and is in no way definitive list, but as stated, it's a general rule of thumb - so please don't shout and say but, but, but...
As for cables in a tube, how long is a piece of string ???
Blown fibre tubes v. tight buffered....we could go on and on.
For campus type installation, it's generally installed as 4 core or 8 core (2 cores = 1 pair = 1 connection TX+RX)
Service provide = 16, 32 or more cores.
Hope that helps...
2006-09-25 03:28:02
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answer #2
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answered by muggsie 1
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A bundle of individual optical fibres.
2006-09-24 22:52:06
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answer #3
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answered by Anonymous
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The answer is C.
There are different type of Fibre Cable.
SMF - Single mode Fibre which has just one optical fibre in it
MMF - Multi Mode Fibre which as you've guessed has multiple fibres in it.
2006-09-24 22:51:29
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answer #4
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answered by Anonymous
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A) A bundle of Optic Fiber cables, which can transmit data in multiple channels as well as optimal utilization of bandwidth
2006-09-24 22:54:22
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answer #5
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answered by poloneck20 3
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a. A bundle of optic fibres
2006-09-24 22:55:43
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answer #6
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answered by Sandy 4
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fiber faster than copper.. DSL does not work on fiber (well it can, but the equiptment is too expensive for the telephone company to invest into) if you have a regular POTS landline with DSL then you are copper all the way to the central office... if you have a regular POTS landline with out DSL then you might be copper all the way to the central office - or you might be on a litespan pair (fiber to the CEV/underground then copper to the block), or fiber to the curb (fiber to the pole feeding your home, then a copper drop wire) the only way that you would have FTTH (fiber to the house) would be if you have FiOS or Uverse... if you have cable, you are likely on a hybrid network that has fiber to the node, or the tap.... EDIT- you are not going to see a big difference between either on a dial up connection.. and the telephone company is not going to change any outside wiring for dial up... the telephone company will only guarantee voice grade service, so they will not issue a repair ticket (well they might, but doubt that they will make any repairs) unless you have a trouble affecting the call quality - static, hum, etc....
2016-03-27 08:10:46
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answer #7
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answered by Anonymous
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NeaRly all are multicore and each strand is able to carry more than one message at a time.
They have a risk factor if working with them in as much as the strands are so small if they splinter and peirce your skin they can tavel in your veins and damage your heart and arteries. (I'm not sure if this bit is fact or fiction)
2006-09-24 22:54:54
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answer #8
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answered by philipscottbrooks 5
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Fresh Air, Nothing because the cable is Hollow!!!
http://www.telstra.com.au/classroom/sec_2_1.htm
2006-09-24 23:09:17
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answer #9
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answered by Kangkid 3
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It all depends some are one line and others are multi core
2006-09-24 22:49:29
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answer #10
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answered by bty937915 4
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The answer is A
2006-09-25 05:27:11
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answer #11
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answered by artleyb 4
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