---------------

Web Terminology

WWW	World Wide Web. The complete set of documents residing on all Internet servers that use the HTTP protocol, accessible to users via a browser using simple point-and-click system. Usually when said "Internet" it is implied precisely WWW.
HTTP	Hypertext Transport Protocol. Protocol for the transmission of data in WWW.
HTML	Hypertext Markup Language. The language, which is used for creating of hyper-text documents, web pages.
Site, website	The collection of the documents in HTML format, graphic and multimedia files connect together according to logic and reference links, accessible via protocol HTTP. Fundamentally, it a collection of interconnected web pages.
Browser	Program that allows to view hyper-text documents and navigate inside WWW. Most common MS Internet Explorer, Mozilla, Opera.
IP address	Internet Protocol. The unique number, which identifies computer on the Internet or local network. It is written in the form of four sets of digits in the range of 0-255, divided between themselves by full stops. For example, 196.123.10.1
Domain, the domain name	Equivalent of digital IP address. Usually unique name of a web site. It is used to simplify memorisation of Internet addresses. Domain name entered in the browser is automatically transferred into corresponding IP address by the DNS server.
Top-level domain (TLD)	Domain, which lies in DNS hierarchy immediately after the root. For example, in the domain name www.mashadesign.com, the top-level domain is .com. Depending on the country it could be .com, .org, .net, .gov, .us, etc.
Second level domain	Domain, which is located in DNS hierarchy one step lower than the top-level domain. In the domain name http://www.design.mashaphoto.com, domain mashaphoto is the second level domain.
Third level domain	Domain, which lies in DNS hierarchy one step lower than second level domain. In the domain name www.mashaphoto.com, www is the third level domain. In the domain name http://www.direct.gov.uk, direct is also the third level domain.
Zone and Subdomains	Zone is a composition of all subdomains, entering a domain. For example, in domain mashaphoto.com, you might have various subdomains such as webdesign.mashaphoto, design.mashaphoto, clients.mashaphoto. They indicate that domains webdesign.mashaphoto.com, design.mashaphoto.com, clients.mashaphoto.com belong to Zone mashaphoto.com
DNS server	The server which possesses information on domains and their corresponding IP addresses. There are two types of DNS servers for each domain, Primary and Secondary.
Registration of the domain	The process, where an organisation or a private individual requires an allocation of a domain name from on of the registrars. In case of requested domain being available and if requested party agrees to all terms and conditions imposed by registrar, the later registers a domain.
Re-registration of the domain	Process of extending domain name registration that is usually done once a year or every two years. Re-registration is done by the initial registrar of the domain in question and after the re-registration fee has been paid.