A01 chaf6542 06 se fm indd

 client–  server

   system.   

  Figure   3.4    shows how the client computers within homes and businesses are connected to 

the Internet via local  

Internet service providers (ISPs)

  which, in turn, are linked to larger 

ISPs with connection to the major national and international infrastructure or  

backbones

  

  A short introduction to Internet technology

   Client–  server 

  The   client–  server 

architecture consists of 

client computers, such as 

PCs, sharing resources 

such as a database stored 

on more powerful server 

computers.   

 Figure 3.3 

 A   fi ve-  layer  model  of  digital  business  infrastructure