Please write a 2 to 3-page essay (approximately 500 words) explaining how your P
ID: 3876526 • Letter: P
Question
Please write a 2 to 3-page essay (approximately 500 words) explaining how your PC uses all of the OSI model layers when you are accessing a website. Be sure to get into some detail about what is happening at each layer of the OSI model. When writing your essay, be sure to do some research and provide an APA citation for each source that you use.
Requirements:
The essay should be approximately 500 words.
Be sure to address what is happening at each layer of the OSI model.
Provide an APA citation for all sources.
Final submission document should be a Word document (.docx).
Explanation / Answer
The OSI model (Open System Interconnection) model characterizes a PC networking structure to execute protocols in seven layers. A protocol in the networking terms is a sort of transaction and lead in the middle of two networking elements.
Remember that in spite of the fact that the OSI model is the thing that we contemplate, we don't utilize OSI in genuine work networks. We utilize the TCP/IP Network Model. The OSI model is still instructed because of it's helpfulness in isolating ideas into modules (layers). The OSI model is meant the TCP/IP model as takes after.
1.When you are endeavoring to open a web page on your PC this is the thing that commonly happens
You commonly type a web address (Uniform resource locator) in a Web browser. Web browser utilizes something many refer to as Hypertext Transfer Protocol which is an Application layer protocol.
2.Behind the scene the web browser get the IP address of the URL you wrote (say http://www.chegg.com) utilizing a procedure would domain be able to Name System which is likewise an Application layer protocol.
3.Your browser now makes an HTTP packet which says "Hello I am intrigued to GET the web page from Chegg's server".
4.The packet is still in your PC and haven't got out. The browser gives the HTTP packet to a procedure running in your PC called TCP (Transmission Control Protocol) which is a Transport Layer protocol.
5.This is a contiguous layer association on same gadget i.e. the higher layer (HTTP) requests the following lower-layer protocol (TCP) to play out the administration, the lower layer gives a support of the layer above it. This cooperation is rehashed till the information achieves the last layer.
6.TCP's primary capacity is to chat with the TCP procedure running on Chegg's server and to set up a session (think it as the activity of TCP is to make a pipe amongst you and Chegg's server so information can be sent by means of the pipe)
7.TCP now put its own data over HTTP packet. These data are required to keep up the session/pipe.
8.The packet is still in your PC and haven't yet got out. TCP now handovers the TCP packet to an IP procedure (Internet Protocol) which is an Internet Layer protocol.
9.The principal employment of IP is addressing and steering i.e. make sense of an approach to sending the packet from your PC to the IP address of Chegg. You can envision IP as a postal administration. The postal administration has 2 address (sender's and recipients) and the course the letters by means of various postal workplaces previously conveying it to conclusive goal.
10.IP now put its own data over TCP packet. These information are required for steering in the web.
11.The packet is still in your PC and haven't yet got out. IP now handovers the packet to network get to/network interface layer. Network get to layer characterizes the protocols and equipment required to convey information over some physical network. A large portion of the PC clients Ethernet.
12.Your PC now encapsulates the IP packet between an Ethernet header and Ethernet trailer, making an Ethernet outline. Ethernet contains something many refer to as MAC address which is utilized to send outline locally (Local area network) .
13.Now your PC physically transmits the bits of this Ethernet outline, utilizing power streaming over the Ethernet cabling.
14.The packet is currently out of your PC. It achieves Chegg's web server. The web server physically gets the electrical flag over a link, and re-makes similar bits by deciphering the importance of the electrical signs.
15.Web server now de-encapsulates the IP packet from the Ethernet outline by evacuating and disposing of the Ethernet header and trailer. Essentially it peruses the TCP data lastly hands it over to HTTP process which comprehends the HTTP get ask.
16.Web server now send sends back to you the web page in the comparative advances.
Same process rehashes, you get the web page sent to the server which is then appeared on your browser.
17.And this is the means by which every one of the layers is in real life when you open a webpage.