Show how the Fletcher algorithm (Figure 10.18) attaches weights to the data items when calculating the checksum.

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Figure 10.18

Notes Start L: Left 8-bit checksum R: Right 8-bit checksum R=L= 0 D;: Next 8-bit data item More data? [yes] L = (L+ R) m

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Data Communications and Networking

ISBN: 978-0073376226

5th edition

Authors: Behrouz A. Forouzan

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Question Posted: Dec 13, 2018 07:59 AM

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Show how the Fletcher algorithm (Figure 10.18) attaches weights to the data items when calculating the checksum.

Question:

Notes Start L: Left 8-bit checksum R: Right 8-bit checksum R=L= 0 D;: Next 8-bit data item More data? [yes] L = (L+ R) mod 256 R = (R + Dj) mod 256 [no] 16-bit Checksum = L x 256 + R R checksum Stop

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The following shows that L is the weighted sum of the data it...View the full answer

Data Communications and Networking

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