1. what is DNS?
http://www.dnsstuff.com/tools/lookup.ch?name=yahoo.com&type=A
2. Why a domain name can be pointed to different IP address?
3. What does it mean by ns1.yahoo.com, ns2.yahoo.com, ect...
2006-07-17 22:35:58 · 4 answers · asked by lun073 1 in Computers & Internet ➔ Programming & Design
DNS is a database that maps names to IP addresses
If the domain name is changed in the database to a new ip address it will go to the new address
ns1.yahoo.com is a sub domain of Yahoo that yahoo can assign without registering then domin name. The DNS you resolve to yahoo and yahoo's DNS would point to ns1.
2006-07-17 22:43:42 · answer #1 · answered by Bill 6 · 0⤊ 0⤋
DNS means Domain Name Services.
Put simply, whenever somebody hits domain.com DNS resolves domain names to corresponding IP of the site.This IP can come from shared or dedicated hosting plans.
Also, DNS gives you freedom to change hosting providers as you wish. All you need to do is update DNS records of your domain like ns1.prvider.net, ns2.provider.net. Of course this ns(x) can have IP address entered.
Without domain name and dns services, people had enter/remember ip addresses instead of nice/easily remembered domain names.
2006-07-18 05:45:11 · answer #2 · answered by Seoboyuk 1 · 0⤊ 0⤋
DNS is domain name system/service to provide the coversion of site address to ip address to locate the server.
domain name doesn't point the different different address because each site has unique ip address
2006-07-18 05:43:37 · answer #3 · answered by jacky 2 · 0⤊ 0⤋
1.DNS stands for DOMAIN NAME SERVER/SERVICE
2.bcos you can remember www.yahoo.com(domain name) easily rather than http://192.168.16.290(IP address)
3.it's nothing but the hierarchical address of the exact location of the page.ie your browser will search first in com sites it'll search for yahoo in that it will search for ns1
2006-07-18 07:17:14 · answer #4 · answered by santha s 2 · 0⤊ 0⤋