What is URL? And What is www?

What is URL? And What is www?

URL full form

URL-WWW
URL-WWW

A Uniform resource Locator (URL), colloquially termed an internet deal with, is a reference to a web resource that specifies its area on a pc community and a mechanism for retrieving it.

A URL is a selected type of Uniform resource Identifier (URL), even though many humans use the 2 terms interchangeably. URLs arise maximum commonly to reference net pages (http), but also are used for document transfer (ftp), e-mail (mailto), database get admission to (JDBC), and many different applications.

Most web browsers show the URL of an internet web page above the page in an cope with bar. A standard URL ought to have the form.  


Domain name :
A Domain name is an identification string that defines a realm of administrative autonomy, authority or control within the internet. Domains are formed through the guidelines and processes of the area name gadget (DNS). Any call registered inside the DNS is a site call.

Domains are utilized in diverse networking contexts and for utility-unique naming and addressing functions. In standard, a website name represents a web Protocol (IP) resource, including a personal computer used to get admission to the net, a server computer website hosting an internet web site, or the web web page itself or some other service communicated via the net. In 2017, 330.6 million domain names were registered.

Domain names are prepared in subordinate degrees (subdomains) of the DNS root area, that's nameless. The primary-degree set of domain names are the top-level domain names (TLDs), such as the standard top-stage domain names (gTLDs), including the distinguished domains com, info, internet, edu, and org, and the U.S Code top-stage domain names (ccTLDs). Underneath these top-degree domains in the DNS hierarchy are the second-level and 1/3-degree domains which might be commonly open for reservation by using quit-users who desire to attach nearby area networks to the internet, create different publicly available internet assets or run net websites.

The registration of these domain names is usually administered through area call registrars who sell their services to the general public.  


A totally certified domain name (FQDN) is a domain name this is absolutely distinctive with all labels in the hierarchy of the DNS, having no elements not noted. Labels in the area call machine are case-insensitive, and might therefore be written in any desired capitalization technique, but maximum usually domain names are written in lowercase in technical contexts.

WWW full form

The world wide web, also known as the WWW and the web, is an facts space wherein documents and different net assets are recognized via Uniform resource Locators (URLs), interlinked by using hypertext links, and reachable via the net. English scientist Tim Berners-Lee invented the world extensive web in 1989. He wrote the first net browser in 1990 while employed at CERN near Geneva, Switzerland. The browser become released outdoor CERN in 1991, first to different studies establishments beginning in January 1991 and to the general public at the net in August 1991.

The sector huge internet has been valuable to the improvement of the facts Age and is the primary device billions of human beings use to engage on the internet pages are commonly textual content files formatted and annotated with Hypertext Markup Language HTML further to formatted textual content, web pages may additionally comprise pics, video, audio, and software additives which can be rendered in the user's internet browser as coherent pages of multimedia content material.

Embedded links allow customers to navigate between net pages. More than one web pages with a common subject, a not unusual domain call, or each, make up a website. Website content can largely be provided by way of the publisher, or interactively in which users make contributions content material or the content depends upon the users or their actions. Web sites can be frequently informative, ordinarily for amusement, or in large part for business, governmental, or non-governmental organisational reason.  


Telnet :
Telnet is a protocol used on the net or neighborhood place network to provide a bidirectional interactive textual content-orientated communique facility using a virtual terminal connection. User records is interspersed in-band with Telnet manage facts in an eight-bit byte orientated data connection over the Transmission control Protocol (TCP).

Telnet became advanced in 1969 starting with RFC 15, extended in RFC 855, and standardized as net Engineering challenge pressure (IETF) internet widespread STD 8, one of the first internet standards. The name stands for "teletype network".

Historically, Telnet supplied access to a command-line interface (normally, of an operating gadget) on a faraway host, along with most community system and running structures with a configuration application (such as systems primarily based on home windows NT).[clarification needed] however, because of serious protection issues when the use of Telnet over an open community including the internet, its use for this motive has waned extensively in desire of SSH.

The term telnet is also used to refer to the software program that implements the consumer part of the protocol. Telnet client packages are available for sincerely all laptop structures.

Telnet is likewise used as a verb. To telnet manner to set up a connection the usage of the Telnet protocol, both with command line consumer or with a programmatic interface. For instance, a commonplace directive might be: "To exchange your password, telnet into the server, log in and run the passwd command." most customarily, a user may be telnetting to a Unix-like server machine or a network tool (inclusive of a router) and acquiring a login set off to a command line textual content interface or a individual-based full-screen manager.

FTP :
The file transfer Protocol (FTP) is a standard network protocol used for the transfer of pc documents among a consumer and server on a computer network.

FTP is constructed on a patron-server model structure the usage of separate control and data connections between the consumer and the server. FTP customers can also authenticate themselves with a clean-text sign-in protocol, commonly in the form of a username and password, but can connect anonymously if the server is configured to allow it. For secure transmission that protects the username and password, and encrypts the content material, FTP is frequently secured with SSL/TLS (FTPS) or replaced with SSH record switch Protocol (SFTP).  


The primary FTP client packages were command-line programs developed before working structures had graphical user interfaces, and are still shipped with most home windows, Unix, and Linux working structures. Many FTP clients and automation utilities have due to the fact that been developed for computers, servers, mobile devices, and hardware, and FTP has been integrated into productiveness programs, consisting of HTML editors.

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