What is the Internet ?
+2
Abhishek
Manoj
6 posters
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:25 pm
The Internet, sometimes called simply "the Net," is a worldwide system of computer networks - a network of networks in which users at any one computer can, if they have permission, get information from any other computer (and sometimes talk directly to users at other computers).
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:25 pm
It was conceived by the Advanced Research Projects Agency (ARPA) of the U.S. government in 1969 and was first known as the ARPANet.
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:25 pm
The original aim was to create a network that would allow users of a research computer at one university to "talk to" research computers at other universities.
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:25 pm
A side benefit of ARPANet's design was that, because messages could be routed or rerouted in more than one direction, the network could continue to function even if parts of it were destroyed in the event of a military attack or other disaster.
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:26 pm
Today, the Internet is a public, cooperative and self-sustaining facility accessible to hundreds of millions of people worldwide.
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:26 pm
Physically, the Internet uses a portion of the total resources of the currently existing public telecommunication networks.
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:26 pm
Technically, what distinguishes the Internet is its use of a set of protocols called TCP/IP (for Transmission Control Protocol/Internet Protocol).
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:26 pm
Two recent adaptations of Internet technology, the intranet and the extranet, also make use of the TCP/IP protocol.
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:26 pm
For most Internet users, electronic mail (email) practically replaced the postal service for short written transactions.
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:26 pm
People communicate over the Internet in a number of other ways including Internet Relay Chat (IRC), Internet telephony, instant messaging, video chat or social media.
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:27 pm
The most widely used part of the Internet is the World Wide Web (often abbreviated "WWW" or called "the Web").
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:27 pm
Its outstanding feature is hypertext, a method of instant cross-referencing. In most Web sites, certain words or phrases appear in text of a different color than the rest; often this text is also underlined.
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:27 pm
When you select one of these words or phrases, you will be transferred to the site or page that is relevant to this word or phrase.
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:27 pm
Sometimes there are buttons, images, or portions of images that are "clickable."
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:27 pm
If you move the pointer over a spot on a Web site and the pointer changes into a hand, this indicates that you can click and be transferred to another site.
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:28 pm
Using the Web, you have access to billions of pages of information. Web browsing is done with a Web browser, the most popular of which are Chrome, Firefox and Internet Explorer.
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:28 pm
The appearance of a particular Web site may vary slightly depending on the browser you use. Also, later versions of a particular browser are able to render more "bells and whistles" such as animation, virtual reality, sound, and music files, than earlier versions.
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:28 pm
The Internet has continued to grow and evolve over the years of its existence. IPv6, for example, was designed to anticipate enormous future expansion in the number of available IP addresses.
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:28 pm
In a related development, the Internet of Things (IoT) is the burgeoning environment in which almost any entity or object can be provided with a unique identifier and the ability to transfer data automatically over the Internet.
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:29 pm
When you send a letter, you don’t need to know about the vans, trains and planes that carry it to its destination, or how many post offices it passes through on the way.
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:29 pm
Nor do you need to know how your packets of internet data are transmitted through a variety of cables, routers and host computers on the way to their destination.
- karan
- Posts : 11270
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:29 pm
The internet is a globally connected network system that uses TCP/IP to transmit data via various types of media. The internet is a network of global exchanges – including private, public, business, academic and government networks – connected by guided, wireless and fiber-optic technologies.
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:29 pm
However, different packets can take different routes, which makes the internet relatively resilient.
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is the Internet ?
Tue Jan 15, 2019 3:29 pm
The failure of a particular node or host generally makes little or no difference to the rest of the system.
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