Time For A Few Alphabet Soup Whenever you sort a handle into your web browser, or select a link in a web page, you are making a demand for a particular file. Managed by the Hyper Text Transfer Protocol (HTTP), your request is sent over the Internet to the machine that holds the document you want. Assuming all goes well, the server will respond by sending the report, frequently a web-page comprising graphics and text. Exactly what is HTTP? It's part of the Internet Protocol (IP) suite, and is used by a 'client,' including a browser, to establish a reference to the server that hosts a particular site. Because it waits for incoming requests the host displays TCP port 80. Connections on the net that allow 2 computers to exchange information are created by the Transmission Control Protocol (TCP). TCP is prepared to identify the requesting computer, and to effectively transmit information to its location. Server To Web Browser -- Behind The Scenes A few TCP ports are available with standardized uses. For case, TCP Port 21 is generally reserved for FTP (File-transfer Protocol) for uploading and downloading files. Port 80 is generally employed for HTTP. When the server receives a request line on TCP port 80 in-the type of GET / HTTP/1.1 it will send a reply signal, depending on whether the requested web page is available or maybe not. An average request can look like this: GET /faq.html HTTP/1.1 Host: http://www.mywebsite.com It is a request the page 'faq' around the host site 'my-website.' The 'number' must be given to tell apart between web sites which can be hosted o-n shared computers. If faq.html is available, the machine can respond anything like: HTTP/1.1 200 OK Date: Mon, 1-2 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 closely by the specific website. How Knowledge Gets Where It is Going The initial point above, HTTP/1.1 200 OK, ensures that the requested web page is available. Other limitations can also be returned. For example, the code 404 means the server can not get the requested page. When found, the web site is sent via TCP like a series of data packets, each with its order within the data flow and a header that describes its location. The various packages can take different routes to achieve their destination. Each is directed through a switch, which forms other modems nearby. If a connection with the first switch is unavailable, the info is going to be sent through another. Clicking ask.fm/ seemingly provides lessons you can give to your mom. This allows the information to achieve its destination as quickly as you are able to. What Happens When I-t Gets There If the web browser receives the data, it sends right back an acknowledgement. This ensures that all the packets have already been received inside a certain time. If not, they will be re-transmitted from the host. TCP also checks to be certain the data is unchanged. The data is then reassembled in the proper order, due to the sequence number of every data packet. And Presto! The web site appears on your monitor, usually in a couple of seconds.. Ask.Fm/Swellmarketing contains supplementary resources concerning the meaning behind this enterprise.