Use the Wireshark packet list display window, shown below, to answerthe following question.Protocol InfoHTTPSourceDestination192.168.1.5192.168.1.5204.126.133.64GET /phpadmin/js/keyhandler.js HTTP/1.0GET /myadmin/js/keyhandler.js HTTP/1.0GET /phpmyadmin/js/keyhandler.js HTTP/1.0204.126.133.64HTTP192.168.1.5204.126.133.64HTTPWhat is the same (common and shared string pattern) in the data of thepackets? (hint: do not use or refer to IP addresses as part of your answer)O keyhandler.jsO js/keyhandler.js HTTP/1.0GET

As shown in above image all three message uses a get protocol to receive an information.this is…

rk packet list display window, s own beloW, to the following question. Source Destination Protocol Info GET /phpadmin/js/keyhandle GET /myadmin/js/keyhandler GET /phpmyadmin/js/keyhand 192.168.1.5 204.126.133.64 HTTP. 192.168.1.5 204.126.133.64 HTTP 192.168.1.5 204.126.133.64 HTTP What is the same (common and shared string pattern) in the d. packets? (hint: do not use or refer to IP addresses as part of ye O keyhandler.js O js/keyhandler.js HTTP/1.0

rk packet list display window, s own beloW, to the following question. Source Destination Protocol Info GET /phpadmin/js/keyhandle GET /myadmin/js/keyhandler GET /phpmyadmin/js/keyhand 192.168.1.5 204.126.133.64 HTTP. 192.168.1.5 204.126.133.64 HTTP 192.168.1.5 204.126.133.64 HTTP What is the same (common and shared string pattern) in the d. packets? (hint: do not use or refer to IP addresses as part of ye O keyhandler.js O js/keyhandler.js HTTP/1.0

Systems Architecture

7th Edition

ISBN:9781305080195

Author:Stephen D. Burd

Publisher:Stephen D. Burd

Chapter13: Internet And Distributed Application Services

Section: Chapter Questions

Problem 15VE

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Assume that Computer A, which is connected through an Ethernet cable to the Switch S1, is just powered on. The user opens a browser and then types a website address to receive the website from the Server (as shown in Figure 1). Write down all the important protocols that come into play by the time the first frame containing http request reaches R1. (Note: Before http frame, other frames have already been sent by other protocol(s).) Write down all the protocols with reference to the TCP Model as follows. Application Layer: Transport Layer: Internet Layer: Link Layer: [Physical Layer (if needed)]: After writing down the protocols that come into play, briefly write the procedure as to what happens
Registration Number: 193046 Consider a network with 3 hosts and a NAT router. Suppose that the network address of the home network is 192.168.NNN/24, where NNN are the last 3 digits of your Reg#. For example, if your Reg# is BSE193046, NNN = 046 and therefore the network address wil be 192168.46/24. (If NNN>255, consider NNN=254) (a) Assign any public IP address to NAT router’s outgoing interface. (b) Assign IP addresses to all 3 hosts and local interface of the NAT router in the home network. (
Use the Wireshark packet list display window, shown below, to answer the following question. Protocol Info HTTP Source Destination 192.168.1.5 204.126.133.64 GET /phpadmin/js/keyhandler.js HTTP/1.0 GET /myadmin/js/keyhandler.js HTTP/1.0 GET /phpmyadmin/js/keyhandler.js HTTP/1.0 192.168.1.5 204.126.133.64 HTTP 192.168.1.5 204.126.133.64 HTTP What HTTP method is used for the data request by the host 192.168.1.5? Note: must know what http method means to answer this question. Answer:
In a bit-oriented link-layer protocol, the start and end of a frame are each marked by a flag, which is a sequence of exactly 6 consecutive 1 bits. Bit stuffing is used during the rest of the frame: after sending 5 consecutive 1 bits, a 0 is added. The bits below contain an example frame, with the leftmost bit received first. The content of the frame is a sequence of bytes, sent most significant bit first. Put the values of the first four bytes of the frame content, in order, in the four answer boxes below. You may enter the values in either decimal (e.g. 76, 123) or hexadecimal (e.g. 2a, f7). 00101011111010001111110011100111110000111101111101010110100010010011111101101100100 57−240−123−229
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)…
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. (a) What will be the sequence number of the third TCP handshake signal send from PC to webserver?…
Please solve it correctly and please provide explanation of your answers. Please answer parts g, h and i. 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. g) The second segment from webserver was corrupted. So the PC…
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SMTP (Simple Mail Transfer Protocol) is the standard protocol for transferring mail between hosts over Transmission Control Protocol (TCP). 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. Suppose you wish to build a packet filter rule set allowing inbound and outbound SMTP traffic. You generate the following rule set: Rule Direction Src Addr Dest Addr Protocol Dest Port Action A B C D E In Out Out In Either External Internal Internal External Internal External Any External Internal Any TCP TCP TCP TCP Any 25 > 1023 25 > 1023 Permit Permit Permit Permit Any Deny Someone from the outside world (10.1.2.3) attempts to open a connection from port 5150 on a remote host to the Web proxy server on port 8080 on one of your local hosts (172.16.3.4), in order to carry out an attack. Typical packets are as follows: Scenario Direction 3 4 In…
SMTP (Simple Mail Transfer Protocol) is the standard protocol for transferring mail between hosts over Transmission Control Protocol (TCP). 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. Suppose you wish to build a packet filter rule set allowing inbound and outbound SMTP traffic. You generate the following rule set: Rule Direction Src Addr Dest Addr Protocol Dest Port Action A B с D E In Out Out Either External Internal External Internal Internal External Any External Internal Any TCP TCP TCP TCP Any 25 Permit > 1023 Permit 25 Permit > 1023 Permit Any Deny Your host in this example has IP address 172.16.1.1. Someone tries to send e- mail from a remote host with IP address 192.168.3.4. If successful, this will generate an SMTP dialogue, consisting of SMTP commands and mail, between the remote user and the SMTP server on your host.…