Consider the following scenario in which host A is sending a file to host B over a TCP connection. Assuming that the sequence number of the first data byte sent by A is 0 and every segment always includes 1000 bytes of data, excluding the TCP header. At some point of time, bytes up to 6400 have been written into the sender’s buffer. Bytes up to 4999 have been sent out but the segment which contains bytes 2000~2999 has not arrived at host B yet. At the receiver’s side, all bytes up to 3999 have been received except for bytes 2000~2999. Bytes up to 499 have been read from the buffer by the application. Assume that the maximum size of the sender’s buffer is large enough.Consider the sliding window algorithm in TCP and answer the following questions.1) What are the values for LastByteAcked, LastByteSent, and LastByteWritten?2) What are the values for LastByteRead, NextByteExpected, and LastByteRcvd?3) Assuming that the maximum size of the receiver’s buffer is 4000 byte, what would be the value of the AdvertisedWindow and the value of the EffectiveWindow? Would the flow control prevent the process in Host A from passing data to its TCP socket at this point of time? Why?

The Transmission Control Protocol (TCP) uses a sliding window mechanism for reliable data transfer…

Answered: Consider the following scenario in…

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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Consider the following scenario in which host A is sending a file to host B over a TCP connection. Assuming that the sequence number of the first data byte sent by A is 0 and every segment always includes 1000 bytes of data, excluding the TCP header. At some point of time, bytes up to 6400 have been written into the sender’s buffer. Bytes up to 4999 have been sent out but the segment which contains bytes 2000~2999 has not arrived at host B yet. At the receiver’s side, all bytes up to 3999 have been received except for bytes 2000~2999. Bytes up to 499 have been read from the buffer by the application. Assume that the maximum size of the sender’s buffer is large enough.

Consider the sliding window algorithm in TCP and answer the following questions.

1) What are the values for LastByteAcked, LastByteSent, and

LastByteWritten?

2) What are the values for LastByteRead, NextByteExpected, and LastByteRcvd?

3) Assuming that the maximum size of the receiver’s buffer is 4000 byte, what would be the value of the AdvertisedWindow and the value of the EffectiveWindow? Would the flow control prevent the process in Host A from passing data to its TCP socket at this point of time? Why?

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