internet

INTERNEt

CATEGORIES	INTERNET	INTRANET	EXTRANET
DEFINITION	The largest and most well kown computer network, linking millions of computers all over the world	Is a network that belong to an enterprise and is accsesible only by that enterprise's employees or authorized users	Is a private network that connects more than one organization that use internet technologies to allow suppliers ,customers and business partner limited access to their network
TYPES OF USERS	Any individuals with dial-up access or LAN	Authorized employees ONLY	Authorized groups from collaborating companies
USAGES	Provide information for public (access all kinds of information)	Provide information for organization employees (telephone directories, employee information, E-mail)	Povide information to suppliers,customer and business partner (access data,check status place order,send email)
SECURITY	Loose-Security control is lower	Higher-Security control are higher	High-Security control are high
TYPES OF ACCESS	Unlimited, public, no resrtictions	Private and restricted	Private and outside authorized partners
INFORMATION	General, public and advertisement	Specific, corporate and proprietary	Shared in authorized collaborating groups
ADVANTAGES	-Easy access to many types of information -Services -Buy or sell products -Downloading softwares
DISADVANTAGES	-Theft of personal information -Spamming -Virus Threat -Pornography

TYPES OF INTERNET CONNECTION	TRANSMISSION MEDIA Physical system used to carry a communication signal from one to another	COMMUNICATION DEVICES Hardware component that enables a computer to send & receive data to and from one or more computers			INTERNET SERVICE PROVIDER Business that provides individuals & organizations access to the internet free or a fee			DATA TRANSFER RATE Speed at which data can be transmitted .(Kbps,Mbps)
HIGH –SPEED BROADBAND CONNECTION
CABLE INTERNET SERVICE Provides high-speed internet connection through cable television via cable modem			Coxial Cable	Cable Modem		Astro TV	128 Kbps 52 to Mbps
DIGITAL SUBSCRIBEL LINE (DSL) Provide high-speed internet connection using regular copper telephone line			Unpaired Twisted-Pair Cable	Network Interface Card		Streamyx	128 Kbps to 8.45 Mbps
CELLULAR RADIO NETWORK Provides high-speed internet connection to devices with built-in computer with wireless modem			Radio Signal	Wireless Modem		Maxis	Up to 15 Mbps
FIBER TO THE PREMISES (FTTP) Provides high-speed internet connection uses fiber-optic cable to home			Fiber-Optic Cable	Wireless Access Point		TM Unifi	5 Mbps to 100 Mbps
WI-FI Provides high-speed internet connection uses radio signals to wireless device			Broadcast Radio	Wireless Adapter Card		Yes	108 Mbps & Higher
SATELLITE INTERNET SERVICES Provides high-speed internet connection via satellite to a satellite dish that communicates with satellite modem			Satellite	Satellite Dish			1 Gbps
FIXED WIRELESS Provides high-speed internet connection using a dish-shaped antenna on your house to communicates with a tower via radio signal			Radio Signal	Tower Location			1 Gbps
LOW-SPEED INTERNET CONNECTION
DIAL-UP CONNECTION Is a low speed internet connection that use a standard telephone line.Data transmitted through analog signal			Twisted Pair-Cable	Modem		Telekom Malaysia	Limited to 56 Kbps

SERVICES OF ISP

       Web Site Hosting & Development
       E-mail
        Domain Name & Registration

RESPONSIBILITEIS OF ISP

-Support the hardware and software needed

-To protect their site and network from external threats

EXAMPLE OF ISP

-MAXIS

-DIGI

-CELCOM

INTERNET PROTOCOL ADDRESS (A number that uniquely identifies each computers or devices connected to the internet)	INTERNET PROTOCOL VERSION 4 (IPV4)	INTERNET PROTOCOL VERSION 6 (IPV6)
DEFINE	Uses 32 bit addresses,have 4 part separated by periods(.) and it allows for 2^32 possible unique addresses	Uses 128 bit addresses,have 8 part separated by colons(:) and it allows for 2^128 possible unique addresses
EXAMPLE	72.14.207.99	2001:0db8:3c4d:0015:0000:0000;abcd:ef12
PARTS	1)Network Address 2)Specific Host	1)Global Prefix 2)Subnet 3)Interface ID

DOMAIN NAME IS THE TEXT VERSION OF AN IP ADDRESS

EXAMPLES OF GENERIC TOP-LEVEL DOMAINS (gTLD)
.biz	Businesses of all sizes
.com	Commercial organizations , businesses and companies
.edu	Educational institutions
.gov	Government agencies
.net	Network providers
.org	Nonprofit organizations

WORLD WIDE WEB (WWW)
-The World Wide Web or Web consist of a worldwide collection of electronic documents

Web Terms	Definition
Web Pages	Each electronic document on the Web,which can contain text,graphic,animation,audio and video
Web Sites	Is a collection of related Web pages and associated items,such as documents and pictures,stored on a Web server
Web Server	A Web server is a computer that delivers requested Web pages to your computer
Web 2.0	Web sites that provide a means for users to interact (social networking Web sites,wikis)

WEB BROWSER or BROWSER, is application software that allows users to access and view Web pages and Web 2.0 programs.
EXAMPLES
1)Internet Explorer
2)Firefox
3)Opera
4)Safari
5)Google Chrome

WEB ADDRESS -IS A UNIQUE ADDRESS FOR A WEB PAGES
Consist of
1-A PROTOCOL
2-DOMAIN NAME
3-PATH
4-WEB PAGE NAME

HTTP-A protocol used to transmit Web pages
HTTPS-A protocol used to create secure connection for e-commerce

[NETWORK ARCHITECTURE] [NETWORK TOPOLOGY] [CLASSIFICATION OF NETWORK] [INTERNET] [INTERNET SERVICES]