b) Consider the following TCP data transfer diagram: Host A Host B Timeout interval Timeout interval Seq-249, 40 bytes Seq-289, 60 bytes X Seq=249, 40 bytes Ack-289 Ack-349 Ack-349 i) What is the new value of SendBase at Host A after receiving the Ack # 349? ii) What will be the change in the given sequence if the second Ack (#349) comes before the first timeout interval? Draw the diagram with changes. iii) If instead of first Ack (#289), first data segment (seq # 249, 40 bytes) is lost, what will be the Ack sent by Host B for the second segment (Seq # 289, 60 bytes) sent by Host A?

b) Consider the following TCP data transfer diagram: Host A Host B Timeout interval Timeout interval Seq-249, 40 bytes Seq-289, 60 bytes X Seq=249, 40 bytes Ack-289 Ack-349 Ack-349 i) What is the new value of SendBase at Host A after receiving the Ack # 349? ii) What will be the change in the given sequence if the second Ack (#349) comes before the first timeout interval? Draw the diagram with changes. iii) If instead of first Ack (#289), first data segment (seq # 249, 40 bytes) is lost, what will be the Ack sent by Host B for the second segment (Seq # 289, 60 bytes) sent by Host A?

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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Question

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b) Consider the following TCP data transfer diagram:
Host B
Host A
Timeout
interval
Timeout
interval
Seq-249, 40 bytes
Seq 289, 60 bytes
X*
Seq=249, 40 bytes
Ack 289
Ack-349
Ack=349
i) What is the new value of SendBase at Host A after
receiving the Ack # 349?
ii) What will be the change in the given sequence if the
second Ack (#349) comes before the first timeout interval?
Draw the diagram with changes.
iii) If instead of first Ack (#289), first data segment (seq #
249, 40 bytes) is lost, what will be the Ack sent by Host B
for the second segment (Seq # 289, 60 bytes) sent by Host
A?

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