Each and every time you select a link in a web site or type an address into your web browser you are making a 'demand' for a particular record. That request is handled using the Hyper Text Transfer Protocol (HTTP) and sent online to the server which holds the document in question. If all goes well the server responds by giving the report -- often a website of text and graphics. HTTP is part of the Internet Protocol (Ip Address) suite. It is used by a 'client' including a browser to determine a connection with the server which hosts a specific website. The server waits for incoming requests by tracking TCP port 80. Transmission Control Protocol (TCP) is employed to make associations between two computers on the Internet for them to exchange information. TCP has provisions for identifying the requesting computer and for sending data as time passes stamps to ensure that it could be reassembled in the right order after it arrives at its destination. There are numerous TCP ports which have standardized uses. TCP port 2-1, for example, is usually reserved for FTP (File-transfer Protocol) for downloading and uploading files. Port 80 is usually useful for HTTP. If the server receives a request string on TCP port 80 in the type of GET / HTTP/1.1 it will send a reply signal depending on whether the requested website can be obtained or not. An average demand goes like this GET /faq.html HTTP/1.1 Host http://www.mywebsite.com This is a obtain http://www.mywebsite.com/faq.html. The 'Host' has to be given to distinguish sites which are hosted on shared computers. Learn new resources on like us on facebook by browsing our grand website. If faq.html can be acquired the host will respond HTTP/1.1 200 OK Date Mon, 12 October 2005 22:38:34 GMT Server Apache/1.3.27 (Unix) (Red-Hat/Linux) Last-Modified Wed, 08 Jan 2003 23:11:55 GMT ...followed from the actual website. HTTP/1.1 200 OK means that the requested website can be obtained. Other codes can be returned. The rule 404, for instance, means that the machine cannot find the requested page. The web-page is sent via TCP like a group of data packets each with a header that identifies its destination and order in the data stream. Http://Www.Informedseries.Com/Informed Faq.Html is a grand resource for further about the purpose of it. The many packets could all take different paths to attain their destination. Each is directed through a modem which polls other routers which are close-by. The information is likely to be sent through another If a connection with the initial switch is unavailable. An acknowledgement is sent back by the client ( the web browser ) since the data is received. This ensures that all of the packets are received inside a certain time. If not, they will be re-transmitted from the host. TCP also checks the information is undamaged. The data is reassembled in the correct order due to the sequence number of every data packet. Voila! The web page appears in your computer screen. The TCP connection could be kept alive for additional requests from the client. Be taught additional info on this affiliated use with by visiting informedseries.com. This enables several pages to be requested inside a short time period without evoking the expense of opening and closing TCP ports. Both client or server can close the connection at any time.. In case you need to be taught more about Pay-per-click Promotion And Advertising, there are many online resources you should think about pursuing.