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What is Network Host Names?
Beginners Guide to Sockets
(Continued from previous question...)
What is Network Host Names?
Using IP addresses to access hosts on a network is fine for the IP
software. Most people are more comfortable with names, and procedures
for both proper name construction and translation of these names into
IP addresses has been in existence for some time. The most commonly
used is the Domain Name System (DNS), occasionally but inaccurately
referred to as the Domain Name Service. Naming in DNS is done
hierarchically, that is, in a tree-structure format, much like the UNIX
file system naming. The top two levels are controlled by the Internet
Network Information Center (NIC) at SRI International.
At the top of the domain are two-letter country designators and
three-letter (usually) general category designators within the USA.
Some examples are:
- fr -- France
- gov -- government
- nz -- New Zealand
- com -- commercial business
- us -- USA
- edu -- educational institution
- uk -- United Kingdom
- mil -- military
The next level usually identifies the institution.
For example:
- ibm -- IBM Corporation
- utdallas -- UT-D
- ti -- Texas Instruments (TI)
- nasa -- NASA
DNS and other software help in maintenance of these naming conventions
and in the translation of host names to IP addresses and vice versa.
(Continued on next question...)
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