In journey on the Internet. URL

The Use of the Internet has become so common that often we do not even think about the purpose and meaning of those tools that are used constantly. When you need to use the link, it's the few who cause trouble. Either we are ready to insert in a web browser that downloads the program in the appropriate box on the web-site, etc., or independently find its usually at the top in the corresponding field of the browser. Thus the concept of “link” for the average user does not cause any issues when the question arises to find the URL, it may cause some difficulties.

At its core, these two concepts are very close. URL is externally indistinguishable from the encoded record which is normally called a link. The emergence of a URL (abbreviation of the English full name Uniform Resource Locator) the world owes Tim Berners-Lee, who is known as a party to the Geneva European research Council in the nuclear field. Appeared the URL in 1990 as a way to specify the address of the file location, subsequently it was used as an indicator of the location of the web resource in the Internet. Is the URL from the name of the file, the page path and domain.

Among the many advantages possessed by the URL, its significant drawback is the use in the process of addressing only the Latin alphabet, and even a limited set of additional characters. The use of symbols that are not included in this list, leads to the fact that under the influence of the algorithm used is encoded in hexadecimal. In this case, the URL lacks readability by humans and is a collection of numbers and special characters.

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Of Course, this state of Affairs significantly infringe other languages, which led to the emergence of international indicator sites IRI, which is already available thanks to the use of any Unicode characters.

As mentioned earlier, the URL is composed of several mandatory elements. At the beginning of the written Protocol, followed by a colon and two slashes should be through the point of the host, domain and port, then through the single inclined specifies the file path and the file name.

Under the Protocol, should imply the type of Internet service. Typically, this is http. Use an ordinary Internet page, the information in this case is not encrypted. Https use of resources, tracking their safety. When you work with them encrypts all of the information intended for transmission. If you specify the ftp Protocol, it means that loading–unloading is done directly from the server where the site is located. Symbol file used to search for files on your computer.

The Host determined by the host domain (to hosts on the default http – www). Domain-is the domain name used on the Internet. Under port, understand the port number for the host (for http default – 80). Way, like navigate the computer's file system, specifies the location of the page on the server (may be absent when finding the document in the root directory of the site). The name of the file defines the name of the document or resource.