*DAIL-UP CONNECTION:-This connects internet through telephone lines whenever needed.Usually this is used in home computers.
*LEASED LINE CONNECTION:-This connects using special communications line(like optical fibres)which provide internet connection throughout the day.
*CABLE TV NETWORK:This connects us to internet using satellite link which is becoming popular in india.
*DSL(DIGITAL SUBSCRIBER LINE):-This is 140 times faster than the modems available in our country.DSL modem becomes faster because it uses special types of copper wires.
DSL modem works in two different ways.Frequency below 4 kilo hertz is kept for sound transfer and the frequency above that is used for other types of data transfer.DSL modem can download information at a speed of 64 KB to 1.5 MB per second.
When we register with the internet service provider,they provide us the user name,password and email address.The password must be kept very confidential.To keep it confidential,change the password frequently and use numbers and other signs together with alphabets.
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