How Internet works

How does internet work?

In internet most computers are not connected directly to the internet .Rather they are connected to similar networks, which in turn are connected to smaller networks,which in turn are connected through gateways to the internet backbone.

Two new terms you have encountered just now- gateway and backbone.Let me define these two terms.

Let us now see how Internet functions:

1. At the source computer, the message or the file/document to be sent to another computer is firstly divided into very small parts called packets. A packet generally contains some informations.

2. Each packet us given a number serialwise.

3. Al the packets are then sent to the address of destination computer.

4. The destination computer receives the packets in random manner. (It may even receive packet 10 before packet 1 arrives). If a packet is garbeld or lost, it is demanded again.

5. The packets are resembled in the order if their number and the original message/file/document obtained.

Let us now see what all helps internet in doing so...

Internet Functioning:

The reasons that the internet works at all is that every computer connected to it uses the same set of rules for communication. Di you know that the set of rules is called protocol?

The communication protocol used by internet is TCP/IP.

• The TCP(i.e., Transmission Control Protocol) part is responsible for dividing the files/message into packets on the source computer at the destination or recipient computer.
• The IP (i.e.,Internet Protocol) part is responsible for handling the address of destination computer so that each packet is routed (sent) to its proper destination.