the measuredConsider the figure below, which plots the evolution of TCP's congestion window at the beginning ofeach time unit (where the unit of time is equal to the RTT). The initial congestion window (CWND) is 1and ssthresh is 3240Part 1:CWND (in segments)51520253035E1R2R3R4R110051015E2R6E3R7R5202530Time Unit (in RTT)Which congestion states are the seven regions (R1-R7) in?Part 2What is the event at E1, E2, E3?

Step 1:Understanding the Graph:The graph depicts the evolution of TCP's congestion window size…

Answered: the measured Consider the figure below,…

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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An HTTP client opens a TCP connection using an initial sequence number (ISN) of 14,534 and the ephemeral port number of 59,100. The server opens the connection with an ISN of 21,732. Show the three TCP segments during the connection establishment if the client defines the rwnd of 4000 and the server defines the rwnd of 5000. Ignore the calculation of the checksum field.
TCP sender and receiver communicate over a connection in which the sender->receiver segments may be lost. The TCP sender sends an initial window of 4 segments. Suppose the initial value of the sender->receiver sequence number is 86 and the first 4 segments each contain 145 bytes. The delay between the sender and receiver is 7 time units, and so the first segment arrives at the receiver at t=5. As shown in the figure below, 0 of the 4 segment(s) are lost between the segment and receiver. Give the sequence numbers associated with each of the 4 segments sent by the sender. Format your answer as: x,y,z,... Give the ACK numbers the receiver sends in response to each of the segments. If a segment never arrives use 'x' to denote it, and format your answer as: x,y,z,...
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Consider the figure below in which a TCP sender and receiver communicate over a connection in which the sender->receiver segments may be lost. The TCP sender sends an initial window of 5 segments. Suppose the initial value of the sender->receiver sequence number is 362 and the first 5 segments each contain 638 bytes. The delay between the sender and receiver is 7 time units, and so the first segment arrives at the receiver at t=8. As shown in the figure below, 3 of the 5 segment(s) are lost between the segment and receiver.
Write a Java TCP MultipleClient-Server Program for following scenario. NOTE Server Details are in the above figure Client-Server communicates continuously until the Client send Bye to the Server Use Multithreading for Multiple Clients NOTE : 1 cm = 0.39 inches 1 cm = 0.03 foot 1 cm = 0.01 meter Sample Ouput: Client Server 1 – cm to inches 2 – cm to foot 3 – cm to meter Enter length in cms (int) : 10 Received from Server 3.9 inches 1 – cm to inches 2 – cm to foot 3 – cm to meter Enter length in cms (int) : BYE Received from Server BYE Client DISCONNECTED Server Waiting for the Cline to be Connected… CONECTION ESTABLISHED Received From Client 10 cms Sent to Client 3.9 inches Received From Client BYE Sent to Client BYE HINT : When client choses 1 for cm to inches and enter 10, then the client sends the string 110 to the Server. Where the first char ‘1’ represents the cm to inches and the other 2 chars represents the 10.
Consider the figure below in which a TCP sender and receiver communicate over a connection in which the segments can be lost. The TCP sender wants to send a total of 10 segments to the receiver and sends an initial window of 5 segments at t = 1, 2, 3, 4, and 5, respectively. Suppose the initial value of the sequence number is 151 and every segment sent to the receiver each contains 612 bytes. The delay between the sender and receiver is 7 time units, and so the first segment arrives at the receiver at t = 8, and an ACK for this segment arrives at t = 15. As shown in the figure, 1 of the 5 segments is lost between the sender and the receiver, but none of the ACKs are lost. Assume there are no timeouts and any out of order segments received are thrown out.
Consider the figure below in which a TCP sender and receiver communicate over a connection in which the segments can be lost. The TCP sender wants to send a total of 10 segments to the receiver and sends an initial window of 5 segments at t = 1, 2, 3, 4, and 5, respectively. Suppose the initial value of the sequence number is 151 and every segment sent to the receiver each contains 612 bytes. The delay between the sender and receiver is 7 time units, and so the first segment arrives at the receiver at t = 8, and an ACK for this segment arrives at t = 15. As shown in the figure, 1 of the 5 segments is lost between the sender and the receiver, but none of the ACKs are lost. Assume there are no timeouts and any out of order segments received are thrown out.
9.Correct expression tor UDP user datagram length is length of UDP = length of IP- length of IP header's length of UDP= length of UDP-length of UDP header's length of UDP = length of IP+length of IP header's length of UDP = length of UDP+length of UDP header's.
In a TCP data packet, if the sequence number has the value 001111, ACK number has the value 010110 and the urgent pointer has the value 001100 assuming that URG flag is set. What is the last urgent byte in the data section of the packet? All numbers are in binary.
SMTP (Simple Mail Transfer Protocol) is the standard protocol for transferring mail between hosts. A TCP connection is set up between a user agent and a server program. The server listens on TCP port 25 for incoming connection requests. The user end of the connection is on a TCP port number above 1023. You have defined the packet filter rule set shown in the table below. These rules permit and/or deny inbound and outbound traffic between the user agent and the mail server. Describe the purpose of each packet filter rule in the table. Rule Direction Source Address Destination Address Protocol Destination Port Action A2 In External Internal TCP 25 Permit B2 Out Internal External TCP > 1023 Permit C2 Out Internal External TCP 25 Permit D2 In External Internal TCP > 1023 Permit E2 Either Any Any Any Any Deny
5. Expand the information on the Transmission Control Protocol for this packet in the Wireshark “Details of selected packet” window (see Figure 3 in the lab writeup) so you can see the fields in the TCP segment carrying the HTTP message. What is the destination port number (the number following “Dest Port:” for the TCP segment containing the HTTP request) to which this HTTP request is being sent?
Is this statement true or false? Let's say for the sake of simplicity that a TCP connection's most recent SampleRTT is one second. The connection must be kept open if the current TimeoutInterval value is larger than one second.

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