DNS

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Michael Yardley

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1) Short for Domain Name System (or Service or Server), an Internet
service that translates domain names into IP addresses. Because domain
names are alphabetic, they're easier to remember. The Internet
however, is really based on IP addresses. Every time you use a domain
name, therefore, a DNS service must translate the name into the
corresponding IP address. For example, the domain name www.example.com
might translate to 198.105.232.4.
The DNS system is, in fact, its own network. If one DNS server doesn't
know how to translate a particular domain name, it asks another one,
and so on, until the correct IP address is returned.

(2) Short for digital nervous system, a term coined by Bill Gates to
describe a network of personal computers that make it easier to obtain
and understand information.
 
Re: DNS

Michael Yardley wrote:
> 1) Short for Domain Name System (or Service or Server), an Internet
> service that translates domain names into IP addresses. Because domain
> names are alphabetic, they're easier to remember. The Internet
> however, is really based on IP addresses. Every time you use a domain
> name, therefore, a DNS service must translate the name into the
> corresponding IP address. For example, the domain name www.example.com
> might translate to 198.105.232.4.
> The DNS system is, in fact, its own network. If one DNS server doesn't
> know how to translate a particular domain name, it asks another one,
> and so on, until the correct IP address is returned.
>
> (2) Short for digital nervous system, a term coined by Bill Gates to
> describe a network of personal computers that make it easier to obtain
> and understand information.


Michael, Do these informational posts have a purpose?
--
/kj
 
Re: DNS


"Michael Yardley" <middleton@mail.org> wrote in message
news:4d1c4158-5e5a-49d2-a9cb-ebc7a5182690@a70g2000hsh.googlegroups.com...
> 1) Short for Domain Name System (or Service or Server),

System.

> an Internet service that translates domain names into IP addresses.

An "internetwork protocol (IP) Server" -- not strictly for the Internet, but
any internetwork using IP.

> Because domain
> names are alphabetic, they're easier to remember.

Alphanumeric.

> The Internet however, is really based on IP addresses.

The Internet and most modern private networks too.

> Every time you use a domain
> name, therefore, a DNS service must translate the name into the
> corresponding IP address. For example, the domain name www.example.com
> might translate to 198.105.232.4.

> The DNS system is, in fact, its own network.

True but likely misleading for anyone who can benefit from this info.

It is called a SYSTEM because they work together (and technically
this is a network in the LOOSE, HUMAN definition of the word.)

It is more explicitly a Distributed, Hierarchical System (or Network.)

> If one DNS server doesn't
> know how to translate a particular domain name, it asks another one,
> and so on, until the correct IP address is returned.

OR until it is determined that the Name-Address record CANNOT
exist.


Simple said: DNS Server turn names (and other records) into the
equivalent IP address.

DNS Servers are organized in a Hierarchy (on complex networks
like the Internet) so that when one DNS Server doesn't have the
required record it can start at the top, called the Root, and work its
way down to the DNS Server which holds (or should hold) the
required resource record.
 
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