Sunday 5 June 2016

Difference between Internet and Intranet

The networking process can be divided into Three types;-
  1. Internet

  2. Extra-net

  3. Internet

1. Internet is a private network using internet protocols and technology. It is meant to share information amongst the employees of an organization.

2. An Extranet is a semi-private network that also uses Internet technology. It is essentially an Internet that has been extended to allow a select group of people outside the organization such as, vendors and business partners to gain access to relevant information.

3. The Internet' is a world-wide network of computers linked together by telephone wires satellite links and other means. It helps even dissimilar computers with different operation systems to communicate with each other using a standard set of Protocols (means - Rules).

How the Internet works?

All Computers within any network are connected to each other with the help of cables. A message travels across the network with the lelp of networking protocols. A Protocol is a set of rules which computers use to communicate with each other accross a network. The protocols used over the internet provide addresses for the computers attached to a network. In this way different types of networks communicate with each other using the same protocol.

To interpret the information being transmitted., it is essential that the right software and hardware be used. The commonly used protocols are;-

IP- Internet Protocol
TCP- Transmission Control Protocol

They are together known as the TCP or IP protocols. This has a simple naming and addressing scheme which helps in locating information on the internet. Each network and computer system has an address called the IP address. The address is used to exchange information.

When information is passed from one computer system to another, it is broken up into pieces called packets using the IP protocol. Each packet has an address called the IP Address that refers to the Sender  and the Destination. These packets are passed from one network to the packets into a complete message.

If packets are damaged or lost, a request is sent to resend them. It is not necessary for all the packets in a single message to take the same route through the Internet, or for the same message to take the same route each time it is sent.

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