Need explanation on Namespace and Name Server

  • Thread starter Thread starter serge
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S

serge

Hello,

I am trying to learn more about DNS and i have a few questions.

1-When i read this :

"DNS server contains information about a portion of the DNS namespace"

What is exactly a "DNS Namespace"? Is it the WHOLE DNS
Internet, or it can be my own private domain name?
For example, let's say i had a domain called "mydomainname.com"
does it mean my domain's DNS NameSpace is "mydomainname.com"?

So then, why would the DNS Server contain info for only a portion
of the DNS namespace?

2- If i check the DHCP Scope Options, i see two settings, one is
for NAME SERVER, the other is for DNS Server.
What is the difference between a Name Server and a DNS Server?


Any help is greatly appreciated

Thank you very much
 
In
serge said:
Hello,

I am trying to learn more about DNS and i have a few questions.

1-When i read this :

"DNS server contains information about a portion of the DNS namespace"

What is exactly a "DNS Namespace"? Is it the WHOLE DNS
Internet, or it can be my own private domain name?
For example, let's say i had a domain called "mydomainname.com"
does it mean my domain's DNS NameSpace is "mydomainname.com"?

So then, why would the DNS Server contain info for only a portion
of the DNS namespace?
Click to expand...

Because it does not have every zone for every domain on the internet. If it
has a zone in it, or if it has the information in its cache, then it only
has information about that name space, any other name spaces it has to go
find.
2- If i check the DHCP Scope Options, i see two settings, one is
for NAME SERVER, the other is for DNS Server.
What is the difference between a Name Server and a DNS Server?
Click to expand...

The name server option is an old option for some applications and for the
most part is no longer used. The TCP/IP stack uses the DNS server option.
That is about the best answer I can give you maybe a google search or
someone else can give you a precise answer as to the applications that use
the name server option.
 
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