TCP MULTIPLEXING AND DEMULTIPLEXING In the scenario below, the left and right TCP clients communicate with a TCP server using TCP sockets. The Python code used to create a single welcoming socket in the server is shown in the figure (the welcoming socket itself is not shown graphically); code is also shown for the client sockets as well. The three sockets shown in server were created as a result of the server accepting connection requests on this welcoming socket from the two clients (one connection from the client on the left, and two connections from the client on the right). mySocket = socket (AF_INET, SOCK_STREAM) mySocket.bind (myaddr, 6189 ); P1 mySocket = socket (AF_INET, SOCK_STREAM) mySocket.bind (myaddr, 5854 ); + transport network link physical QUESTION 2 OF 8 B source port: ? dest port: ? What is the destination port # for packet C? P4 P5 P6 transport network link physical A source port: ? dest port: ? mySocket1 = socket (AF_INET, SOCK_STREAM) mySocket1.bind (myaddr, 5262 ); mySocket2 = socket (AF_INET, SOCK_STREAM) mySocket2.bind (myaddr, 5602 ); D source port: ? dest port: ? source port: ? dest port: ? P2 P3 transport network link physical

TCP MULTIPLEXING AND DEMULTIPLEXING In the scenario below, the left and right TCP clients communicate with a TCP server using TCP sockets. The Python code used to create a single welcoming socket in the server is shown in the figure (the welcoming socket itself is not shown graphically); code is also shown for the client sockets as well. The three sockets shown in server were created as a result of the server accepting connection requests on this welcoming socket from the two clients (one connection from the client on the left, and two connections from the client on the right). mySocket = socket (AF_INET, SOCK_STREAM) mySocket.bind (myaddr, 6189 ); P1 mySocket = socket (AF_INET, SOCK_STREAM) mySocket.bind (myaddr, 5854 ); + transport network link physical QUESTION 2 OF 8 B source port: ? dest port: ? What is the destination port # for packet C? P4 P5 P6 transport network link physical A source port: ? dest port: ? mySocket1 = socket (AF_INET, SOCK_STREAM) mySocket1.bind (myaddr, 5262 ); mySocket2 = socket (AF_INET, SOCK_STREAM) mySocket2.bind (myaddr, 5602 ); D source port: ? dest port: ? source port: ? dest port: ? P2 P3 transport network link physical

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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Please solve it correctly and please provide explanation of your answers. A PC and a Web Server are communicating over a TCP connection. The PC had started the three way handshake with the initial sequence number of 3069 . The Web Server's initial sequence number is 4830 . The window size of the PC is 815 bytes and the window size of the Web Server is 463 bytes. Using the third TCP handshake ack segment the PC sends the http request of the size 396 bytes to the Web Server. Then the Web Server answers with 3 segments containing the requested data. The first segment size is 42 bytes and the second segment size is 276 bytes and the third segment size is 146 bytes respectively. The PC receives all three segments within the timer. But unfortunately the second segment was corrupted. So the PC immediately sends an acknowledgement segment. Assume that the PC uses Selective Repeat/Reject ARQ. (d) What will be the window size of PC A after receiving only the first segment from webserver? (e)…
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