Explain how Systems are Connected to Internet?

Connecting to the Internet:

Dial up connections:- In many homes and small business, individual users connect to the internet by using a telephone line and a modern.

In a dial up connection your computer uses modem to dial a telephone number given to you by the ISP. This establishes the connection b/w your PC and the ISP server.

Like any phone call the connection is only temporary. It begins when the IP’s server answers the calls and ends when your PL or the server hangs up.

High speed broad band connection:- When many users share on internet connection through a LAN, the connection b/w the network and ISP must be adequate to meet all the needs. This often means supporting the traffic created by all the users at the same time.

Formality delicate high speed data circuits are available from telephone companies, cable TV services and other supplies such as large networking companies and satellite services provides. These high speed services are some times called broadband connections because they handle multiple signals at once such as fifer, optics, micro waves and other technologies.

Integrated service digital network (ISDN):- ISDN is a digital telephone service thus simultaneously transmits voice data and control signaling over a single telephone line. 15 DN service on standard telephone lines that requires the special modem and phone services which adds to the cost.

Digital Subscriber line (DSL):- DSL service is similar to ISDN in its use of the telephone network, but it uses more advanced digital signal processing and algorithm to compress more signals through the telephone lines. DSL also requires changes in components of the telephone network before we can be offered in an area. 

Cable Modem services: Many cable television companies now use a portion of their networks and width to offer internet access through existing cable television connections this internet connection option is called cable modem service because of the need to use a special cable modem to connect.