Saturday, 24 March 2012




Internet is a global collection of network. The Internet is a network of networks, linking computers to computers sharing the TCP/IP protocols.
It is a "network of networks" that consists of millions of smaller domestic, academic, business, and government networks, which together carry various information and services: electronic mail, online chat, file transfer, interlinked Web pages and other documents of the World Wide Web.
A Hierarchy of Networks From a single computer to LAN, From LAN to ISP and ISP to WWW.


ISP: Internet service provider Malaysian ISP’s and type of services they provide.

Internet protocol
Every machine on the Internet has a unique identifying number, called an IP Address. The IP stands for Internet Protocol, which is the language that computers use to communicate over the Internet. A protocol is the pre-defined way that someone who wants to use a service talks with that service. The "someone" could be a person, but more often it is a computer program like a Web browser. An Internet Protocol address (IP address) is a numerical label that is assigned to devices participating in a computer network that uses the Internet Protocol for communication between its nodes. An IP address serves two principal functions: host or network interface identification and location addressing.


Internet protocol
 A typical IP address looks like this:
 To make it easier for us humans to remember,
IP addresses are normally expressed in decimal format as a dotted decimal number like the one above.
 But computers communicate in binary form.
Transmission Control Protocol/Internet Protocol, the suite of communications protocols used to connect hosts on the Internet. TCP/IP uses several protocols, the two main ones being TCP and IP. TCP/IP is used by the Internet, as the de facto standard for transmitting data over networks.
 TCP/IP (Internet) Applications
 World Wide Web's Hypertext Transfer Protocol(HTTP)
 Simple Mail Transfer Protocol (SMTP)
 File Transfer Protocol (FTP)
 Telnet (Telnet) which lets you logon to remotecomputers
 Simple Network Management Protocol (SNMP)
 VoIP
Domain Name System (DNS)
The Internet naming scheme which consists of a hierarchical sequence of names, from the most specific to the most general (left to right), separated by dots : example ?
 IP (Internet protocol)
The Internet standard protocol that provides a common layer over dissimilar networks, used to move packets among host computers and through gateways if necessary.
 IP Address
The numeric address of a computer connected to the Internet; also called Internet address.



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