Computers have a DNS (Domain Name System) entry which is
a name associated with the IP address. It is the DNS
entry which allows you to call a computer 'www.nasa.gov' or
'darwin.epcc.ed.ac.uk'.
Information does not take a direct
route though the Internet but goes through many computers
to reach its final destination. Below is a print-out of the route taken to send data between ORT in London
and ORT Uruguay (via the USA). You can see that all of
the computers have DNS entries as well as IP numbers,
except for '38.1.2.12'.
ci1.london1.uk.psi.net [154.32.18.1]
ip1.dmz106.ne.us.psi.net [204.6.106.1]
38.1.2.12
core6-hssi1-0.Washington.mci.net
[206.157.77.169]
core1.WestOrange.mci.net [204.70.4.181]
border3-fddi-0.WestOrange.mci.net
[204.70.64.19]
theta.adinet.com.uy [206.99.44.5]
seciu.adinet.com.uy [206.99.46.29]
tacuabe.edu.uy [164.73.128.1]
www.ort.edu.uy [164.73.96.2]
From London to Uruguay |
|
