Thursday, 16 September 2010

WEB ARCHITECTURE

a Uniform Resource Locator (URL), is an address for a particular file of Web site on the Internet. However, it can't have certain characters of spaces, but it uses forward slashes to show different directories. Examples of URLs are http://ilikepie.com/, or ftp://info.lalala.co.uk/. The first bit in the URL shows what type resource it's addressing.

A DOMAIN NAME is the name that shows a web site. A few examples are 'google.com' is the domain name for Google. One Web server can supply Web sites for all sorts of domain names, however only one domain name can locate to one machine.

Hyper Text Transfer Protocol (HTTP) is a protocol (set of rules) which are used to transfer data to the World Wide Web. As you know, Web site addresses start with "http://". When you type in a URL in to a browser and then hit Enter, the computer transfers an HTTP request to the suitable Web Server.
The World  Wide Web (WWW), is a susbset for the Internet. It includes pages which can be acquired through a Web browser.  However, the Internet is the top network, which is where all the information is.
The Internet Service Provider (ISP) is the essential ingredient, for connecting to the Internet. There is a certain company that you (or someone else) pays monthly to, for getting access to the Internet.







WEB HOSTING is what you need to do, before publishing a website online. Web hosting saves all of the pages of your website, as well as making them availiable to other computers connected to the Internet. When a user types in the domain name into the browser's address field, the IP address is found and the Web site is loaded by you Web Host.






There are DIFFERENT TYPES OF DOMAIN NAMES which identifies a Web site. The different ones are names such as: .org (for an organisation),.net (for a network) and .com (for a company). Another type of domain name are COUNTRY DOMAINS such as: .co.uk (for the United Kingdom), .co.jp ( for Japan), or maybe .au (for Australia).


                                         

Friday, 10 September 2010

Computer Hardware for Websites

Here are just a few Hardware Components:

WEB SERVER is a program in computers which delivers things such as Web pages, with Hypertext Transfer Protocol (HTP). This happens over the World Wide Web.
a MAIL SERVER is an application which receives e-mail from other local users, as well as remote senders outgoing for e-mail.
a ROUTER is machine which is like a gateway to give access to network resources. It can also be a software.
a SWITCH is a hardware device that joins lots of computers together with a Local Area Network (LAN).
a Local Area Network (LAN) provides networking capability to a bunch of computers, which are close enough together. For example in a workplace like the office or in a school.
a Wide Area Network (WAN) covers a big geographical area, for example a province. They frequently connect smaller networks. The  most popular WAN is the Internet.
The INTERNET is a worldwide system that is availiable to the public of interconnected computer networks, which can trasmit data by packet switching.
a BROWSER a program which can access and show files and other types of data availiable on the Internet as well as other networks.
an E-MAIL CLIENT is a program that is used send and read messages. Unlike the e-mail server, the user can interact with the e-mail client.