Monday, 22 April 2013
P1 (Unit 28)
The first most important thing that goes along with the Internet process is the hardware. Which is anything that will give the access to the Internet. This includes things like cables that carry terabits of information every second to the computer that you are using. Other types of important hardware are things like routers, servers, cell phone, towers, satellites, radios, smartphones and other devices. The information is passing through the browsers like Internet Explorer, Chrome, Mozilla Firefox…etc. When you connect your computer to the internet, you are connecting to a special type of server which is provided and operated by your Internet Service Provider (ISP). The job of this "ISP Server" is to provide the link between your browser and the rest of the internet. A single ISP server handles the internet connections of many individual browsers - there may be thousands of other people connected to the same server that you are connected to right now. ISP servers receive requests from browsers to view webpages, check email, etc. In order to provide browsers with the pages and files they ask for, ISP servers must connect to other internet servers. This brings us to the next common type of server: the "Host Server". Host servers are where websites are. Every website in the world is located on a host server somewhere. The host server's job is to store information and make it available to other servers. And finally when you want to view a certain website, you get onto your browser and type a certain URL of the website that you want to go to which always starts from “www. “ and ends with either “com, co.uk, fr..etc.” depending on the region of the website and which country it is located in. After you type in the address, your browser sends a request to your ISP server asking for the page. Your ISP server looks in a huge database of internet addresses and finds the exact host server which houses the website in question, then sends that host server a request for the page. The host server then sends the requested page to your ISP server and finally, the ISP sends the page to your browser and you see it displayed on your screen. This is how people can get by through the Internet and exploring different websites.
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Simple chart but a good explanation. You cover it well. p1 achieved.
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