How does the internet work 04/10/10

1) What is the internet

The internet is a global network of computers each computer connected to the internet must have a unique address. The internet addresses are in form nnn.nnn.nnn.nnn where nnn must be a number from 0-255. This address is known as IP address.

2)What is Internet protocal?

Internet protocol is the language that computers use to communicate over the internet. A protocol is pre-drfined way that someone who wants to use a service talk with that service.

3)What is OSI model?
The Open Systems Interconnection model (OSI model) is a product of the Open Systems Interconnection effort at the International Organization for Standardization. It is a way of sub-dividing a communications system into smaller parts called layers. A layer is a collection of conceptually similar functions that provide services to the layer above it and receives services from the layer below it. On each layer an instance provides services to the instances at the layer above and requests service from the layer below.
For example, a layer that provides error-free communications across a network provides the path needed by applications above it, while it calls the next lower layer to send and receive packets that make up the contents of the path. Conceptually two instances at one layer are connected by a horizontal protocol connection on that layer.

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4)What is internet Infrastructure

The internet backbone made up of many large networks which interconnect with each other.

5)What is domain name?

Domain name is DNS or domain name service which is a distributed database which keeps track of computer names and thier corresponding up addresses on the internet.

6)what is world wide web and its service.
computer network consisting of a collection of internet sites that offer text and graphics and sound and animation resources through the hypertext transfer protocol
7)How many internet users in Thailand?
18,300,000 In year 2009
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