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Why 802.11use acknowledgements but not in wired Ethernet?

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Wiki User
2012-04-15 04:25:20

Two scenarios exist where

a wireless network might not know if a frame was successfully

delivered, that do not exist in a wired network. First, a weak

wireless signal could mean that the sender may not be capable of

transmitting and listening at the same time, and this makes

collision detection impossible. Second, fading or the

hidden-terminal problem could mean that interference occurred

during the transmission without the sender knowing.

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