Show that the Internet checksum can be computed by first taking the 32-bit ones complement sum of

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Show that the Internet checksum can be computed by first taking the 32-bit ones’ complement sum of the buffer in 32-bit units, then taking the 16-bit ones’ complement sum of the upper and lower halfwords, and finishing as before by complementing the result. (To take a 32-bit ones’ complement sum on 32-bit twos’ complement hardware, you need access to the “overflow” bit.)

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Computer Networks A Systems Approach

ISBN: 9780128182000

6th Edition

Authors: Larry L. Peterson, Bruce S. Davie

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