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In this problem, we will get practice with computing the one’s complement of the one’s complement sum over a sequence of data values. We will use the exact same algorithm used to compute TCP/UDP checksum, but over a sequence of 4-bit chunks rather than 16-bit chunks. (a) Consider the following data bits. What is the (4-bit) checksum of this (8-bit) data? 0101 1100 (b) Consider the following data bits. What is the 4-bit checksum of this (12-bit) data? (Note: you may be able to reuse calculations from part (a).)  0101 1100 1001

In this problem, we will get practice with computing the one’s complement of the one’s complement sum over a sequence of data values. We will use the exact same algorithm used to compute TCP/UDP checksum, but over a sequence of 4-bit chunks rather than 16-bit chunks. (a) Consider the following data bits. What is the (4-bit) checksum of this (8-bit) data? 0101 1100 (b) Consider the following data bits. What is the 4-bit checksum of this (12-bit) data? (Note: you may be able to reuse calculations from part (a).)  0101 1100 1001

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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In this problem, we will get practice with

computing the one’s complement of the one’s complement sum over a sequence of data values. We

will use the exact same algorithm used to compute TCP/UDP checksum, but over a sequence of

4-bit chunks rather than 16-bit chunks.

(a) Consider the following data bits. What is the (4-bit) checksum of this (8-bit) data?

0101 1100

(b) Consider the following data bits. What is the 4-bit checksum of this (12-bit) data? (Note:

you may be able to reuse calculations from part (a).) 

0101 1100 1001

 

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