Internet
What is the Internet?
In the early days of computing computer was developed, because they are able to work alone, people have the idea to link them together so they can exchange data, the concept of network. It is therefore necessary to develop a physical relationship between the computer so that information can flow, but also the language of communication there can be real exchange rate, it was decided to name this language: protocol.
On the Internet, the protocol is widely used, they are part of a series of protocols called TCP / IP. TCP / IP is based on the location of each computer with the address called an IP address that can route data to the right place. Then we associate with the domain names addresses to enable it easier to remember.
In the early days of computing computer was developed, because they are able to work alone, people have the idea to link them together so they can exchange data, the concept of network. It is therefore necessary to develop a physical relationship between the computer so that information can flow, but also the language of communication there can be real exchange rate, it was decided to name this language: protocol.
On the Internet, the protocol is widely used, they are part of a series of protocols called TCP / IP. TCP / IP is based on the location of each computer with the address called an IP address that can route data to the right place. Then we associate with the domain names addresses to enable it easier to remember.
heterogeneous networks (different nature) has grown around the world, people then decided to connect these networks together (such as universities or the army). Protocol is therefore evolve to allow disclosure of all networks to form a network of networks, gradually forming a giant spider web (in English "web") form the largest network, as it contains all the networks called the Internet! On the Internet there are different protocols (language between computers) that can do different things:
* IRC chat online
* HTTP: Watch webpage
* FTP: File Transfer
* And much more
This gives each number (port) that is transmitted through the communication (transmission is done in small packets of information). So, it is possible to find a program where each package:
* HTTP packet arrives on port 80 and sent to the browser from the page called
* IRC packet arrives on port 6667 (or the other is generally located around 7000) and sent to an IRC client like mIRC (or other)
Connect to the InternetNIC is the element that allows computers to connect to a network path that is planned specifically for digital route information. Modem allows him to connect to the network via a telephone line, which was not originally intended for it but still the most widespread means of communication.A NIC is associated with an IP address, computers on the network characterization.Connection via modem is completely different. Indeed, the modem can establish communication between two computers through telephone lines. However, you can have access to a network (therefore by extension to the Internet) by contacting the computer that is connected ("one side") to one or more phone lines (to receive calls) and ("other side") to the network via a network card .This computer is usually an Internet Service Provider (ISP). When you connect through it, lends an IP address that the computer will keep your connection time. Each connection arbitrarily given a free IP address it has. If he is able to provide the same address for each connection, one speaks of "fixed IP address.
Category Article computer, gadget, Internet
