The Internet Connection
There are two type of Internet Connection :~
1. Dial-up Connection
2.Broadband Internet Connection/Direct Connection
CONVENTIONAL DIAL-UP
to
connect to the Internet, your computer dials its modem and connects to a modem
attached to a computer belonging to your ISP
- PC has to dial via a phone line to connect
- Characteristics of Conventional dial-up
- Slower, but cheaper
- Ties up phone lines
- Relatively secure from hackers
- Example:TMNet
| Advantages | Disadvantages |
|---|---|
| High security | Slow connection speed |
| Include inexpensive hardware | Inconvenience |
| Ease of setup and use | Telephone line will be tied up while accessing the Internet |
| Availability |
ISDN(Integrated Service Digital Network)
- also transfer data over ordinary telephone lines
- typically uses two phone lines to transfer data
- requires a special modem
- Faster but pricey
- Doesn't tie up to the phone lines
- Used by businesses and individuals
| Types of Direct Connection/Broadband Internet Connection | Functions |
|---|---|
| DSL(Digital Subscriber Line) | Delivered over telephone lines,must be less than 3 miles from a switching station,does not tie up to the telephone lines,fast direct Internet access via standard telephone line,ASDL is one of the more popular types of DSLs,example is streamyx without WiFi,requires DSL modem,available in urban areas,half or less of cable speeds |
| Fiber to the premises(FTTP) | Also known as Broadband over Fiber(BoF),delivers over fiber-optic cabling all the way to the building,available in limited areas,fast but expensive,use fiber-optic cable,provides high speed Internet access to house and business users. |
| Fixed Wireless | Uses radio transmission towers rather than satellites,not available in all areas,expected to use WiMAX,provides high-speed Internet connections using a dish-shaped antenna to communicate via radio signals |
| Cellular Radio Network | Also known as Mobile Wireless,access via mobile phone or device,offers high-speed Internet connections to devices with built-in compatible technology or computers with wireless modems,examples are Celcom,Maxis and DiGi |
| Cable Internet Service | Most widely used home broadband connection,provides high-speed Internet access through the cable television network via a cable modem. |
| Wi-Fi(Wireless Fidelity) | Data is transmitted through radio waves,public wireless networks,currently using Wi-Fi for short range but WiMAX may soon be an option,provides high-speed Internet connections to compatible or properly equipped wireless computers and device,example is streamyx with WiFi |
| Satellite Internet Service | Broadband option for rural areas,most expensive than cable or DSL,available in many areas other broadband options are not,provides high-speed Internet connections via satellite,a satellite dish communicates with a satellite modem. |
Internet Service Provider(ISP)
A company that provides Internet connections and services to individuals and organizations.
Access Provider
A business that provides individuals and organizations access to the Internet for free or for a fee
Responsibilities of an ISP
- Providing and maintaning a connection to the Internet
- Support the hardware and software needed to service that connection
- To protect their site and network from external threats such as viruses,hacker and other illegal activities
- Provides 24-hour customer service and technical support
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