When TCP sends a (SYN, SequenceNum = x), the consequent ACK has Acknowledgment = x + 1; that is, SYNs and FINs each take up one unit in sequence number space. Is this necessary? If so, give an example of an ambiguity that would arise if the corresponding Acknowledgment were x instead of x + 1; if not, explain why. SequenceNum = x) or (FIN,

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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Chapter1: Introduction
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- When TCP sends a (SYN, SequenceNum = x) or (FIN,
SequenceNum = x), the consequent ACK has
Acknowledgment = x + 1; that is, SYNs and FINS each take up one
unit in sequence number space. Is this necessary? If so, give an
example of an ambiguity that would arise if the corresponding
Acknowledgment were x instead of x + 1; if not, explain why.
Transcribed Image Text:- When TCP sends a (SYN, SequenceNum = x) or (FIN, SequenceNum = x), the consequent ACK has Acknowledgment = x + 1; that is, SYNs and FINS each take up one unit in sequence number space. Is this necessary? If so, give an example of an ambiguity that would arise if the corresponding Acknowledgment were x instead of x + 1; if not, explain why.
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