Question: What is the more precise form of the Get Web Page command shown in Figure 1-16? Show the form of the command, and describe the
What is the more precise form of the Get Web Page command shown in Figure 1-16? Show the form of the command, and describe the responsibility of each field.
. T-Mobile LTE 7:15 PM 10 100% O doc-00-98-docs.googleusercontent.com 4 47 of 458 Introduction to Computer Networks and Data Communications 21 THE TCP/IP PROTOCOL SUITE IN ACTION A more detailed and more challenging example of a request for a service moving through the layers of a communications model will help make the concepts involved clearer. Consider Figure 1-16, in which a user browsing the Internet on a personal computer requests a Web page to be downloaded and then displayed on his or her screen. Web Browser Application Get Web Page 1 Transport Layer Get Header Web Page Local Router Network Layer Network Layer TCP Get Header Web Page Header HeadeWeb Page Network Access Layer LAN IPTCP Get LAN Heade Header Header Web Page Trailer Network Access Layer Header Header Header Set AN WAN Network Access Layer C Get Local LAN WAN Web Server Application Get Web Page di me Transport Layer TCP Get Header Web Page Remote Router Network Layer TCP GEL Orleader Web Pane Network Layer IP TCP Get Layer Layer Web Page Network Access laver Network Access Layer WAN IP TCP Get Header Header Header och Network Access Layer LAN IP TCP Get LAN Header Header Header Web Trailer cadence Page alle leader Header? Header Base Trailer Remote LAN Figure 1-16 Path of a Web page request as it flows from browser to Internet Web server and back Beginning in the upper-left corner of the figure, the process is initiated when the user clicks a link on the current Web page. In response, the browser software (che application) creates a Get Web Page command that is given to the browser's trans- port layer, TCP. TCP adds a variety of header information to be used by the TCP software on the receiving end. Added to the front of the packet, this information may be used to control the transfer of the data. This information assists with end- to-end error control and end-to-end flow control and provides the address of the receiving application (the Web server). Cha Cup 2016 CRAB Alter. May was the wyp.com M dalawake wa kiu me w ay the walking page to ea e . T-Mobile LTE 7:15 PM 10 100% O doc-00-98-docs.googleusercontent.com 4 47 of 458 Introduction to Computer Networks and Data Communications 21 THE TCP/IP PROTOCOL SUITE IN ACTION A more detailed and more challenging example of a request for a service moving through the layers of a communications model will help make the concepts involved clearer. Consider Figure 1-16, in which a user browsing the Internet on a personal computer requests a Web page to be downloaded and then displayed on his or her screen. Web Browser Application Get Web Page 1 Transport Layer Get Header Web Page Local Router Network Layer Network Layer TCP Get Header Web Page Header HeadeWeb Page Network Access Layer LAN IPTCP Get LAN Heade Header Header Web Page Trailer Network Access Layer Header Header Header Set AN WAN Network Access Layer C Get Local LAN WAN Web Server Application Get Web Page di me Transport Layer TCP Get Header Web Page Remote Router Network Layer TCP GEL Orleader Web Pane Network Layer IP TCP Get Layer Layer Web Page Network Access laver Network Access Layer WAN IP TCP Get Header Header Header och Network Access Layer LAN IP TCP Get LAN Header Header Header Web Trailer cadence Page alle leader Header? Header Base Trailer Remote LAN Figure 1-16 Path of a Web page request as it flows from browser to Internet Web server and back Beginning in the upper-left corner of the figure, the process is initiated when the user clicks a link on the current Web page. In response, the browser software (che application) creates a Get Web Page command that is given to the browser's trans- port layer, TCP. TCP adds a variety of header information to be used by the TCP software on the receiving end. Added to the front of the packet, this information may be used to control the transfer of the data. This information assists with end- to-end error control and end-to-end flow control and provides the address of the receiving application (the Web server). Cha Cup 2016 CRAB Alter. May was the wyp.com M dalawake wa kiu me w ay the walking page to ea e
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