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Nethelp24 Web Design & Development Course | Chain Post-2



 Nethelp24 Web Design & Development Course | Chain Post-2

 

Today Objective:

  • What is Networking? How many types of networks are available?
  • What is internet?
  • What are the differences between internet and intranet?
  • Introduction to www

Network:

A computer network or data network is a telecommunications network which allows computers to exchange data. In computer networks, networking devices exchange data with each other using a data link. The connections between nodes are established using either cable media or wireless media.

There are 3 types of networking
  1. Local area network, or LAN
  2. Metropolitan area network, or MAN
  3. Wide area network, or WAN

LAN:

A local area network, or LAN, consists of a computer network at a single site, typically an individual office building. A LAN is very useful for sharing resources, such as data storage and printers. LANs can be built with relatively inexpensive hardware, such as hubs, network adapters and Ethernet cables.
The smallest LAN may only use two computers, while larger LANs can accommodate thousands of computers. A LAN typically relies mostly on wired connections for increased speed and security, but wireless connections can also be part of a LAN. High speed and relatively low cost are the defining characteristics of LANs.

MAN:

A metropolitan area network, or MAN, consists of a computer network across an entire city, college campus or small region. A MAN is larger than a LAN, which is typically limited to a single building or site. Depending on the configuration, this type of network can cover an area from several miles to tens of miles. A MAN is often used to connect several LANs together to form a bigger network. When this type of network is specifically designed for a college campus, it is sometimes referred to as a campus area network, or CAN.

WAN:

A wide area network, or WAN, occupies a very large area, such as an entire country or the entire world. A WAN can contain multiple smaller networks, such as LANs or MANs. The Internet is the best-known example of a public WAN.

Introduction to Internet

Internet is a global computer network providing a variety of information and communication facilities, consisting of interconnected networks using standardized communication protocols. In brief, Internet is network of network.

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). It was conceived by the Advanced Research Projects Agency (ARPA) of the U.S. government in 1969 and was first known as the ARPANet. 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.

Internet

An intranet is a private network accessible only to an organization's staff. Generally a wide range of information and services from the organization's internal IT systems are available that would not be available to the public from the Internet. A company-wide intranet can constitute an important focal point of internal communication and collaboration, and provide a single starting point to access internal and external resources. In its simplest form an intranet is established with the technologies for local area networks (LANs) and wide area networks (WANs)

What is WWW?

The World Wide Web (abbreviated WWW or the Web) is an information space where documents and other web resources are identified by Uniform Resource Locators (URLs), interlinked by hypertext links, and can be accessed via the Internet. English scientist Tim Berners-Lee invented the World Wide Web in 1989.

About Author:

Hi! The lot of love for all. Introduction myself, i am small and simple person. Work at student and love to write, my a biggest habbit is blogging. Blogger is the best platfrom to write, easy to share and so much cuty so i love and work with blogger - THNAK YOU ALL.

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