THE INTERNET HAS REVOLUTIONIZED MANY ASPECTS OF OUR DAILY LIVES.IT HAS AFFECTED THE WAY WE DO BUSINESS AS WELL AS THE WAY WE SPEND OUR LEISURE TIME.COUNT THE WAY YOU HAVE USED THE INTERNET RECENTLY.PERHAPS YOU HAVE SENT E-MAIL TO A BUSINESS ASSOCIATE ,PAID A UTILITY BILL,READ A NEWS PAPER FROM DISTANT CITY,OR LOOKEDUP A LOCAL MOVIE SCHEDULE ALL BY USING THE INTERNET. INERNET SERVICE PROVIDERS ARE BACKBONE NETWORKS CREATED AND MAINTAINED BY SPECIALISED COMPANIES.TO PROVIDE CONNECTIVTY BETWEEN THE END USERS,THESE BACKBONE NETWORKS ARE CONNECTED BY COMPLEX SWITCHING STATIONS CALLED NETWORK ACCESS POINTS.SOME INERNET SERVICE PROVIDERS ARE ALSO CONNECTED TO ONE ANOTHER BY PRIVATE SWITCHING STATIONS CALLED PEERING POINTS.THESE NORMALLY OPERATE AT A HIGH DATA RATE. REGIONAL INTERNET SERVICE PROVIDERS ARE SMALLER INERNET SERVICE PROVIDERS THAT ARE CONNECTED ONE OR MORE SERVICE PROVIDERS.THESE ARE THIRD LEVEL OF THE HIERARCHY ...