Addressing in the Internet. What is the url-address, domain, IP-address

Each resource on the Internet has its own url-address (uniform resource locator ), which consists of letters and symbols and is unique for each document on the network.

What is the url-address, we once taught in school at the lesson of computer science, but let's take a more detailed look at its constituent parts.

Url-address consists of the name of the resource (http, ftp and other similar names), after which the characters ": //" are written, followed by the domain addresses of computers and the full path to the file on the computer of the user who possesses this information. A separate character between each individual name is the "/" sign. For example, we have the address of a page whose URL will look like this - http: //, after which the computer name will appear on the network kupitdomendeshevo, and then the domain name indicating to which kind of organizations this site belongs - .com /.

To better understand what a URL is, you need to know the definition of a domain address and IP address.

An IP address is a four-byte number that specifies the address of each computer on the Internet. It is recorded in the tenth form and is divided by dots into four parts: 207.46.135.183. The IP address serves only to recognize the addressing of one computer by others, while domain addresses are used by people to access a specific resource on the Internet.

A domain is a part of the network that determines the geographic location, organizational value, and the name given by the owner of each resource. The domain name is read from right to left. Each domain is separated by a period. Here are examples of domains of some countries and organizations:

Au - Australia.

At - Austria.

Ca - Canada.

De - Germany.

En - United Kingdom

Ua - Ukraine.

Uk - England.

Us - USA.

Com - commercial.

Edu - educational.

Gov - political.

Int - international.

Org - various information Internet resources.

Domains come in several levels - first (.ru), second (name.ru), third (username / name /) and so on. Register your own domain only from the second level. To do this, you need to create your own domain name and buy the rights to use it. Domain use rights are purchased for a period of one year, and if necessary, the time of its use is extended. You can do all the necessary actions on special Internet sites. Payment is made by bank transfer or by means of system of Internet money. It is necessary to remember that the domain name must be unique, that is, it should not be identical to the name of any resource.

The IP address and domain address are different forms of recording the same computer name. In the Internet there are special DNS-servers, due to which domain names turn into IP-names.

The IP address is used in the IP protocol to determine the information delivery path.

Together with the IP-protocol, the TCP protocol works, which determines the type of information transport. The message is broken into small packets of standard size (about 1500 bytes). Each package is carefully checked. The task of the TCP protocol is to collect the packets in the correct order and to ensure that none of the packets are changed during transport.
Since these protocols are always involved in the transmission of information, they are often called TCP / IP protocols.

More detailed information on what a url-address and domain address, as well as all the necessary information about their registration, you can get on special resources, as well as read in books devoted to this topic.

But still I hope that you learned some information useful for you about what a url-address, IP-address and domain are from this article.