The Internet


Internet is a  worldwide collection of networks that links millions of businesses, government agencies, educational institutions, and individuals.
The Internet originated as ARPANET in September 1969 and had two main goals:

Allows scientiest at different physical location to share information and network together, and function even if part of the network were disable or destroyed by disaster.

What Can We Use the Internet For?


Intranet and Extranet

CATEGORIES

INTRANET

EXTRANET

DEFINITION

A network that belongs to an enterprise and is a accessible only by that enterprise’s employees or authorized users.

A private network that more than one organizations that use internet technologies to allow suppliers, customers and business partner limited access to their network.

TYPE OF USERS

Authorized employee ONLY.

Authorized group from collaborating companies.

USAGE

Provide information for organization employees. (Telephone directories. Employee information, E-mail)

Provide information to suppliers, customers and business partner. (Check sale stock)

SECURITY

Higher – security control are higher.

High – Security control are high.

TYPE OF ACCESS

Private and restricted.

Private and outside authorized partners.

INFORMATION

Specific, corporate and proprietary.

Shared in authorized collaborating groups.




Types of Internet Connection


Various/Types of Internet Connection

Transmission Media

Type of physical system used to carry a communication signal from one system to another.

Communication Device

Hardware component that enables a computer to send and receive data, instructions to and from one or more computers.

Internet Service Provider (ISP)

A business that provides individuals and organizations access to the Internet free or for a fee.

Data Transfer Rate

The speed at which data can be transmitted between devices.

High-Speed Broadband Connection

Cable Internet Service (Cable)

Provides high-speed Internet access through the cable television network via a cable modem.

Physical: Coaxial Cable

Wireless: Communication Satellite (MEASAT Satellite)

Cable Modem

Dish-Shaped Antenna: (Satellite Dish)

Astro: Astro TV, Astro Beyond, IPTV

128 Kbps to 52 Mbps

Digital Subscriber Line (DSL)

Provides high-speed Internet connections using regular copper telephone lines.

Physical: Unpaired Twisted Pair Cable

Wireless: Broadcast Radio (Wi-Fi)

Network Interface Card (NIC)

Wireless Adapter Card

Wireless Access Point

TMNet: Streamyx

128 Kbps to 8.45 Mbps

Cellular Radio Network

Offers high-speed Internet connections to devices with built-in compatible technology or computers with wireless modems.

Cellular Radio: High-frequency radio waves (2G, 3G & 4G)

Wireless Modem

Celcom, Maxis, Yes, P1

2G: 9.6 Kbps to 19.2 Kbps

3G: 144 Kbps to 2.4 Mbps

4G: Up to 15 Mbps

Fibre To The Premises (FTTP)

Uses fibre-optic cable to provide high-speed Internet access to home and business users.

Physical: Fibre-Optic Cable

Cable Modem (BTU: Broadband Termination Unit)

Wireless Access Point: (Residential Gateway: RG)

TM Unifi

5 Mbps to 100 Mbps

Wi-Fi (Wireless Fidelity)

Network uses radio signals to provide high-speed Internet connections to compatible or properly equipped wireless computers and devices.

Wireless: Broadcast Radio (Wi-Fi)

Wireless Adapter Card

Wireless Access Point

TMNet Hotspots, P1, Yes

802.11: Series of Standards

802.11: 1 to 2 Mbps

802.11a: Up to 54 Mbps

802.11b: Up to 11 Mbps

802.11g: 54 Mbps & higher

802.11n: 108 Mbps & higher

Fixed Wireless

Provides high-speed Internet connections using a dish-shaped antenna on your house or business to communicate with a tower location via radio signals.

Radio Signals

Dish Shaped Antenna : (Satellite Dish)

Tower Location

 

256 Kbps to 10 Mbps

Satellite Internet Service

Provides high-speed Internet connections via satellite to a satellite dish that communicates with a satellite modem.

Satellite

Satellite Modem

Satellite Dish

 

1 Gbps

Low-Speed Internet Connection

Dial-Up Connection

Physical: Unpaired Twisted Pair Cable

Telephone (Dial-Up)

Modem

Telekom Malaysia

Limited to 56 Kbps
 


Internet Service Provider

Internet Service Provider (ISP) is a service (an access) provider is a business that provides individuals and organizations access to the Internet free or for a fee.

-         An internet service providers are categorized as regional or national ISPs.

-         A regional ISP usually provides Internet Access to a specific geographical area.

-         A national ISP is a business that provides Internet Access in cities and towns nationwide.

-         Other than Internet Connection, ISPs may also provide related services like web site hosting & development, e-mail hosting, domain name, registration etc.

Responsibilities of an ISP.

Example of Internet Service Provider