Concept of Internet
  • Jan 03, 2021
  • By Blog Admin

Concept of Internet

Internet is a system architecture that has brought about a revolution in the world of communications and methods of commerce. It allows people to work collaboratively at many different locations. We use it for almost any purpose that depends on information. It supports human communication via social media, electronic mail (e-mail), “chat rooms”, newsgroups and audio and video transmission.

The first computer networks dates back to the late 1950s and early 1960s. The idea of host-to-host interaction was first realized in ARPANET on Oct 29, 1969. It was created by the Advance Research Projects Agency of the U.S. Department of Defence. Being one of the first general purpose computer networks, it connected time-sharing computers at government supported research sites, mainly universities in the United States and soon became essential for the computer science research community there.

Internetting was primarily based on the newly introduced concept of open architecture networking. In order for the concept to work a protocol had to be designed and developed. This gave birth to the Standard Internet Protocol (TCP/IP) in which every computer in internet is identified by a unique IP address (e.g. which identifies a computers location. A special computer DNS (Domain Name Server) is used to provide a name to the IP address so that the user can find out a computer by a name.

Tools and applications such as SMTP i.e. Simple Mail Transfer Protocol commonly referred to as e-mail for sending short messages and the File Transfer Protocol (FTP) for longer transmissions quickly followed. Then the technology of packet switching was employed where large messages were broken into smaller manageable pieces known as packets that could travel independently over any available circuit to a target destination where the pieces were reassembled. In the US, Telenet and Tymnet were two such packet networks.

However, in order to bind the various activities happening on the internet there are some non-profitable organizations viz. IAB (Internet Architecture Board), IETF (Internet Engineering Task Force) and IESG (Internet Engineering Steering Group) which work for the actual development of new standards for improving the services provided by internet.
Internet is not owned by an entity. As such, there is no central administration and any one in the world can join it at any time. TCP/IP is the main contributing factor for the internet along with other protocols like HTTP, FTP and SMTP. Among others which are in use since its inception we have Telnet, Internet Relay Chat, Gopher, Usenet News and the WWW (World Wide Web).

Internet Service Provider (ISP) provides access to the internet. Whether we are at home or at work, whenever we connect to the internet, our connection is routed through an ISP. The access provided is usually for a fee. ISPs are all connected to each other through network access points and thus form the backbone of the internet. The technology that ISPs use to maintain connectivity is based on analog telephone lines (dial-up), DSL, cable, satellite, Wi-Fi, fiber optics, or other connectivity mediums. ISPs handle large amount of internet traffic. As such they require high bandwidth connections to the internet. This popularized the concept of Broadband Internet.

According to the United States Federal Communications Commission (FCC), broadband Internet speeds are defined as 25 Mbps for download and 3 Mbps for upload. Average broadband speeds across the globe can vary from less than 1 Mbps to over 50 Mbps. Apart from providing a greater bandwidth than other internet access forms, it enables multitasking to a computer user with several applications running in the background while he surfs the web.

Like every other technology internet too have its vices among virtues. Presently, the alarming rise in the cases of cyber crimes is a typical concern for the internet users at all levels. So it is important for the common mass to have a clear idea of the concept of internet and its various aspects and at the same time learn the relevance of cyber security as well. Knowledge, if it falls on the wrong hands can cause havoc to a population but we live in a world of hope where every day our learning spirit overcomes the challenges of vulnerabilities arising from the misuse of the internet. Against all odds it won’t be wrong to accept internet as a boon for mankind.

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