UDP and TCP use 1s complement for their checksums. Suppose you have the following three 8- bit bytes: 01010101, 01010110, 01100101. a. What is the 1s complement of the sum of these 8-bit bytes? (Note that although UDP and TCP use 16-bit words in computing the checksum, for this problem you are being asked to consider 8-bit sums.) Show all work. b. With the l's complement scheme, how does the receiver detect errors? c. Is it possible that a 1-bit error will go undetected? How about a 2-bit error?

UDP and TCP use 1s complement for their checksums. Suppose you have the following three 8- bit bytes: 01010101, 01010110, 01100101. a. What is the 1s complement of the sum of these 8-bit bytes? (Note that although UDP and TCP use 16-bit words in computing the checksum, for this problem you are being asked to consider 8-bit sums.) Show all work. b. With the l's complement scheme, how does the receiver detect errors? c. Is it possible that a 1-bit error will go undetected? How about a 2-bit error?

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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Q8.2
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