What is domain name and domain name server?

in easy words... domain name...any google.com, yahoo.com etc domain name server (DNS)...a server where domain name with their IP address r saved. whenever u open any domain, it finds its IP from DNS & u know...computers dont talk using domain names but IP only...so DNS is the translator

Domain name is highlighted as www.nameyoudesired.com whereas name server are the alias of ip's provided by your hosting company. And your domain name is pointed to the nameserver given by your hosting company which gets configured to that particular nameservers and your site is not public.

domain name is what you enter when you want to access to a website and the domain name server , it makes conversions between the domain name and the ip adress .

Domain name is a textual version of an IP where as Domain name sever is medium connecting a domain name and an IP

A domain name is the main part or a web or email address like yahoo.com or google.co.uk When you buy or register a domain name, the company will usually also point it to their web server so it automatically links to a web site. If not, you can edit the DNS records via their control panel to direct the domain to whatever IP address you want. The Domain Name lookup system is a 'distributed database'. Companies, organisations or ISPs can run DNS servers that define the names & IP addresses of their own machines. A machine that runs a DNS is often known as a nameserver. hostnames are the prefix plus domain, referring to a specific machine (or group of machines providing the same service) within a domain, like www.yahoo.com or mail.yahoo.com If something tries to find the address of a machine not on the local network (or their ISPs), the system automatically tries the next higher level nameserver until it finds the info, or finds the master server for the domain so know which remote DNS to query. There is a 'root' server for each top level domain like .com .co.uk .org etc. Anyone can run their own DNS. This allows you to give names to each machine on your internal network, that are on private IPs (192.168.x.x) or are not registered with the public DNS system. Linux distributions usually have this available, it's called 'bind' - Berkeley Internet Named Demon. The databases are just text files it reads at startup, not much different to a 'hosts' file but with a bit of extra info at the start. The big difference is the Reverse list, which maps IP addresses back to hostnames. The two databases are different, as one machine can be represented by many names - like in a small company or home intranet, the same machine may be www.domain.intra, ntp.domain.intra, mail.domain.intra etc. See the link for an example. That site is one of the best sources of understandable info on DNS setups. Use the big up arrow at the bottom of the page to get to the main DNS index.