DEV meet-up UiPath Document Understanding May 7 2024 Amsterdam
Net 7
1. NETWORK
DATA LINK LAYER-ERROR CORECTION AND DECTECTION
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Prepared by: Mir Omranudin Abhar
Email : MirOmran@Gmail.com
Fall ,2019
2. [Error]
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The data can be corrupted during transmission (from source to receiver). It
may be affected by external noise or some other physical imperfections. In
this case, the input data is not same as the received output data. This
mismatched data is called “Error”.
14. [Error]-[Error Correction ]
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Error Correction can be handled in two ways:
1. Backward error correction: Once the error is discovered, the
receiver requests the sender to retransmit the entire data unit.
2. Forward error correction: In this case, the receiver uses the error-
correcting code which automatically corrects the errors.
15. [Error]-[Error Correction]-
[Hamming Code]
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The key to the hamming Code is the use of extra parity bits to allow
the identification of a single error.
Example : 10011010
Now we are going to create data word including parity bits. All bit
positions that are powers of 2 is our parity bits(ie: 1,2,3,4,16 etc)