计算机网络实验3TCP实验

1、计算机网络实验3tcp实验 计算机络实验报告三 tcp实验 1. what is the ip address and tcp port number used by the client computer (source) that is transferring the file to ? to answer this question, its probably easiest to select an http message andl 答：client computer (source)：ip address：02 tcp po

2、rt number：1161 2. what is the ip address of ? on what port number is it sending and receiving tcp segments for this connection? 答：the ip address of ：ip address：2 port number：80 3. if you have been able to create your own trace, answer the following ques

3、tion:what is the ip address and tcp port number used by your client computer(source) to transfer the file to ? 答：my client computer: ip address:0 1 4. what is the sequence number of the tcp syn segment that is used to initiate thetcp connection between the client computer

4、and ? what is it in the segment that identifies the segment as a syn segment? 答：sequence number:0 ；syn 被设置为1说明是syn段。 5. what is the sequence number of the synack segment sent by to the client computer in reply to the syn? what is the value of the acknowledgement fi

5、eld in the synack segment? how did determine that value? what is it in the segment that identifies the segment as a synack segment? 答：the sequence number of the synack segment sent by is:0； synack segment 中 acknowledgement 的值为1； 2 acknowledgement number的值为syn消息中se

6、quence number加上1所得； syn 和acknowledgement f都置为1说明这是一个synack segment. 6. what is the sequence number of the tcp segment containing the http post command? note that in order to find the post command, youll need to dig into the packet content field at the bottom of the wireshark window, looking for a se

7、gment with a “post” within its data field. 答：第四号报文段是包含 http post 命令的tcp segment.且报文段的序列号为1. 3 7. consider the tcp segment containing the http post as the first segment in the tcp connection. what are the sequence numbers of the first six segments in thetcp connection (including the segment containin

8、g the http post)?at what time was each segment sent? when was the ack for each segment received?given the difference between when each tcp segment was sent, and when itsacknowledgement was received, what is the rtt value for each of the sixsegments? what is the estimatedrtt value (see page 249 in text) after thereceipt of each ack? assume that the value of the estimatedrtt is equal tothe measured rtt for the first segment, and then is computed using theestimatedrtt equation on page 249 for all subsequent segments.note: wireshark has a